{"id":3538,"date":"2025-04-21T06:25:32","date_gmt":"2025-04-21T06:25:32","guid":{"rendered":"https:\/\/commmesh.com\/?p=3538"},"modified":"2025-04-21T07:14:48","modified_gmt":"2025-04-21T07:14:48","slug":"fiber-bending-radius","status":"publish","type":"post","link":"https:\/\/commmesh.com\/vi\/fiber-bending-radius\/","title":{"rendered":"B\u00e1n k\u00ednh u\u1ed1n s\u1ee3i: Ch\u00eca kh\u00f3a cho hi\u1ec7u su\u1ea5t t\u00edn hi\u1ec7u"},"content":{"rendered":"

Khi n\u00f3i \u0111\u1ebfn c\u00e1p quang<\/em>, m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> l\u00e0 hi\u1ec3u kh\u00e1i ni\u1ec7m v\u1ec1 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng u\u1ed1n cong m\u1ed9t \u1ed1ng h\u00fat qu\u00e1 m\u1ea1nh\u2014n\u00f3 c\u00f3 th\u1ec3 b\u1ecb cong v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 v\u1eady, u\u1ed1n cong m\u1ed9t c\u00e1p quang<\/em> qu\u00e1 ch\u1eb7t c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n c\u00e1c t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n qua n\u00f3, d\u1eabn \u0111\u1ebfn m\u1ea5t d\u1eef li\u1ec7u ho\u1eb7c suy gi\u1ea3m t\u00edn hi\u1ec7u. Trong h\u01b0\u1edbng d\u1eabn d\u00e0nh cho ng\u01b0\u1eddi m\u1edbi b\u1eaft \u0111\u1ea7u n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 nh\u1eefng g\u00ec b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> l\u00e0, t\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, n\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c lo\u1ea1i kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o c\u00e1p quang<\/em>v\u00e0 c\u00e1c m\u1eb9o th\u1ef1c t\u1ebf \u0111\u1ec3 qu\u1ea3n l\u00fd n\u00f3. Cho d\u00f9 b\u1ea1n \u0111ang thi\u1ebft l\u1eadp m\u1ea1ng gia \u0111\u00ecnh hay l\u00e0m vi\u1ec7c tr\u00ean quy m\u00f4 l\u1edbn c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> d\u1ef1 \u00e1n, s\u1ef1 hi\u1ec3u bi\u1ebft b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 gi\u1eef cho k\u1ebft n\u1ed1i c\u1ee7a b\u1ea1n nhanh ch\u00f3ng v\u00e0 \u0111\u00e1ng tin c\u1eady. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u v\u00e0 kh\u00e1m ph\u00e1 kh\u00eda c\u1ea1nh thi\u1ebft y\u1ebfu n\u00e0y c\u1ee7a c\u00e1p quang<\/em>!<\/p>\n\n\n\n\n\n

B\u00e1n k\u00ednh u\u1ed1n s\u1ee3i l\u00e0 g\u00ec?<\/h2>\n\n\n\n
\"B\u00e1n<\/a>
B\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/figcaption><\/figure>\n\n\n\n

X\u00e1c \u0111\u1ecbnh b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/h3>\n\n\n\n

C\u00e1c b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111\u1ec1 c\u1eadp \u0111\u1ebfn b\u00e1n k\u00ednh t\u1ed1i thi\u1ec3u a c\u00e1p quang<\/em> c\u00f3 th\u1ec3 u\u1ed1n cong m\u00e0 kh\u00f4ng g\u00e2y h\u01b0 h\u1ecfng ho\u1eb7c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a n\u00f3. H\u00e3y ngh\u0129 v\u1ec1 n\u00f3 nh\u01b0 m\u1ed9t v\u00f2ng tr\u00f2n nh\u1ecf nh\u1ea5t m\u00e0 b\u1ea1n c\u00f3 th\u1ec3 u\u1ed1n cong c\u00e1p tr\u01b0\u1edbc khi n\u00f3 b\u1eaft \u0111\u1ea7u g\u1eb7p v\u1ea5n \u0111\u1ec1. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, c\u00e1c b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng milim\u00e9t ho\u1eb7c centimet v\u00e0 thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i c\u1ee7a c\u00e1p quang<\/em><\/a>. Khi m\u1ed9t c\u00e1p quang<\/em> is bent beyond this minimum radius, the light signals inside can leak out or scatter, leading to signal loss\u2014often called “m\u1ea5t \u0111\u1ed9 cong<\/a>“\u2014or even physical damage to the fiber itself.<\/p>\n\n\n\n

C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng trong c\u00e1p quang<\/a><\/h3>\n\n\n\n
\"S\u1ee3i<\/a>
S\u1ee3i quang ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/figcaption><\/figure>\n\n\n\n

B\u00ean trong m\u1ed9t c\u00e1p quang<\/em>, \u00e1nh s\u00e1ng \u0111i qua l\u00f5i th\u1ee7y tinh ho\u1eb7c nh\u1ef1a, \u0111\u01b0\u1ee3c d\u1eabn h\u01b0\u1edbng b\u1edfi l\u1edbp v\u1ecf b\u1ecdc xung quanh c\u00f3 chi\u1ebft su\u1ea5t th\u1ea5p h\u01a1n. Thi\u1ebft l\u1eadp n\u00e0y gi\u00fap \u00e1nh s\u00e1ng ph\u1ea3n x\u1ea1 b\u00ean trong l\u00f5i khi di chuy\u1ec3n d\u1ecdc theo s\u1ee3i. Tuy nhi\u00ean, khi c\u00e1p b\u1ecb u\u1ed1n qu\u00e1 ch\u1eb7t, \u00e1nh s\u00e1ng kh\u00f4ng th\u1ec3 theo \u0111\u00fang \u0111\u01b0\u1eddng cong. M\u1ed9t s\u1ed1 \u00e1nh s\u00e1ng tho\u00e1t ra ngo\u00e0i l\u1edbp v\u1ecf b\u1ecdc ho\u1eb7c ra ngo\u00e0i, g\u00e2y m\u1ea5t c\u01b0\u1eddng \u0111\u1ed9 t\u00edn hi\u1ec7u. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, c\u00e1c b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng v\u00ec n\u00f3 x\u00e1c \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9 u\u1ed1n cong m\u00e0 c\u00e1p c\u00f3 th\u1ec3 x\u1eed l\u00fd tr\u01b0\u1edbc khi t\u1ed5n th\u1ea5t n\u00e0y tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p m\u1ee9c t\u1ed1i thi\u1ec3u b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111\u1ed1i v\u1edbi m\u1ed7i lo\u1ea1i c\u00e1p, th\u01b0\u1eddng \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea l\u00e0 b\u1ed9i s\u1ed1 c\u1ee7a \u0111\u01b0\u1eddng k\u00ednh c\u00e1p\u2014v\u00ed d\u1ee5, m\u1ed9t lo\u1ea1i c\u00e1p c\u00f3 th\u1ec3 c\u00f3 b\u00e1n k\u00ednh u\u1ed1n cong t\u1ed1i thi\u1ec3u g\u1ea5p 10 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a n\u00f3.<\/p>\n\n\n\n

T\u1ea1i sao n\u00f3 l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng<\/h3>\n\n\n\n

C\u00e1c b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt quan tr\u1ecdng trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em> b\u1edfi v\u00ec n\u00f3 \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1p quang<\/em>. N\u1ebfu b\u1ea1n u\u1ed1n cong c\u00e1p qu\u00e1 \u0111\u1ed9t ng\u1ed9t\u2014v\u00ed d\u1ee5, khi \u0111\u1ecbnh tuy\u1ebfn c\u00e1p quanh m\u1ed9t g\u00f3c h\u1eb9p trong trung t\u00e2m d\u1eef li\u1ec7u\u2014b\u1ea1n c\u00f3 nguy c\u01a1 l\u00e0m suy gi\u1ea3m t\u00edn hi\u1ec7u, l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u ho\u1eb7c th\u1eadm ch\u00ed l\u00e0m \u0111\u1ee9t s\u1ee3i quang b\u00ean trong. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, hi\u1ec3u bi\u1ebft v\u00e0 t\u00f4n tr\u1ecdng b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111\u1ea3m b\u1ea3o m\u1ea1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng t\u1ed1t nh\u1ea5t, cho d\u00f9 b\u1ea1n \u0111ang ph\u00e1t tr\u1ef1c tuy\u1ebfn video t\u1ea1i nh\u00e0 hay qu\u1ea3n l\u00fd m\u1ea1ng vi\u1ec5n th\u00f4ng l\u1edbn.<\/p>\n\n\n\n

T\u1ea1i sao b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n

T\u00e1c \u0111\u1ed9ng \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u<\/h3>\n\n\n\n

L\u00fd do ch\u00ednh b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> v\u1ea5n \u0111\u1ec1 trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> l\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a n\u00f3 \u0111\u1ebfn ch\u1ea5t l\u01b0\u1ee3ng t\u00edn hi\u1ec7u. Khi m\u1ed9t c\u00e1p quang<\/em> b\u1ecb u\u1ed1n cong v\u01b0\u1ee3t qu\u00e1 m\u1ee9c t\u1ed1i thi\u1ec3u c\u1ee7a n\u00f3 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>, t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n qua l\u00f5i c\u00f3 th\u1ec3 tho\u00e1t ra ngo\u00e0i, d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng g\u1ecdi l\u00e0 m\u1ea5t m\u00e1t u\u1ed1n cong. M\u1ea5t m\u00e1t n\u00e0y l\u00e0m suy y\u1ebfu t\u00edn hi\u1ec7u, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u ch\u1eadm h\u01a1n, k\u1ebft n\u1ed1i b\u1ecb m\u1ea5t ho\u1eb7c l\u1ed7i trong qu\u00e1 tr\u00ecnh truy\u1ec1n d\u1eef li\u1ec7u. V\u00ed d\u1ee5, trong k\u1ebft n\u1ed1i internet t\u1ed1c \u0111\u1ed9 cao, vi\u1ec7c u\u1ed1n cong qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 g\u00e2y ra t\u00ecnh tr\u1ea1ng \u0111\u1ec7m trong qu\u00e1 tr\u00ecnh ph\u00e1t tr\u1ef1c tuy\u1ebfn video ho\u1eb7c gi\u00e1n \u0111o\u1ea1n cu\u1ed9c g\u1ecdi video. Trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, \u0111\u1ea3m b\u1ea3o c\u00e1p n\u1eb1m trong ph\u1ea1m vi c\u1ee7a n\u00f3 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> gi\u1edbi h\u1ea1n r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 duy tr\u00ec giao ti\u1ebfp r\u00f5 r\u00e0ng v\u00e0 \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n

R\u1ee7i ro thi\u1ec7t h\u1ea1i v\u1eadt l\u00fd<\/h3>\n\n\n\n

U\u1ed1n cong m\u1ed9t c\u00e1p quang<\/em> qu\u00e1 ch\u1eb7t kh\u00f4ng ch\u1ec9 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00edn hi\u1ec7u m\u00e0 c\u00f2n c\u00f3 th\u1ec3 g\u00e2y ra thi\u1ec7t h\u1ea1i v\u1eadt l\u00fd. L\u00f5i th\u1ee7y tinh b\u00ean trong c\u00e1p quang<\/em> c\u1ef1c k\u1ef3 m\u1ecfng v\u00e0 d\u1ec5 v\u1ee1, v\u00e0 u\u1ed1n cong n\u00f3 v\u01b0\u1ee3t qu\u00e1 m\u1ee9c khuy\u1ebfn ngh\u1ecb b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c v\u1ebft n\u1ee9t nh\u1ecf ho\u1eb7c th\u1eadm ch\u00ed l\u00e0m \u0111\u1ee9t ho\u00e0n to\u00e0n s\u1ee3i quang. C\u00e1c v\u1ebft n\u1ee9t nh\u1ecf n\u00e0y, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1c v\u1ebft cong nh\u1ecf, c\u00f3 th\u1ec3 tr\u1edf n\u00ean t\u1ec7 h\u01a1n theo th\u1eddi gian, d\u1eabn \u0111\u1ebfn m\u1ea5t t\u00edn hi\u1ec7u v\u0129nh vi\u1ec5n. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, m\u1ed9t s\u1ee3i quang b\u1ecb h\u1ecfng c\u00f3 ngh\u0129a l\u00e0 c\u00e1p c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c thay th\u1ebf, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 t\u1ed1n k\u00e9m v\u00e0 m\u1ea5t th\u1eddi gian, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf quy m\u00f4 l\u1edbn l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em> c\u00e1c d\u1ef1 \u00e1n nh\u01b0 c\u00e1p ng\u1ea7m ho\u1eb7c m\u1ea1ng l\u01b0\u1edbi to\u00e0n th\u00e0nh ph\u1ed1.<\/p>\n\n\n\n

\u0110\u1ed9 tin c\u1eady l\u00e2u d\u00e0i c\u1ee7a c\u00e1p quang<\/h3>\n\n\n\n

T\u00f4n tr\u1ecdng b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> c\u0169ng \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i c\u1ee7a c\u00e1p quang<\/em>. Ngay c\u1ea3 khi c\u00e1p kh\u00f4ng b\u1ecb \u0111\u1ee9t ngay l\u1eadp t\u1ee9c khi u\u1ed1n qu\u00e1 ch\u1eb7t, th\u00ec \u1ee9ng su\u1ea5t l\u1eb7p \u0111i l\u1eb7p l\u1ea1i ho\u1eb7c nh\u1eefng l\u1ea7n u\u1ed1n cong nh\u1ecf c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u su\u1ea5t c\u1ee7a c\u00e1p theo th\u1eddi gian. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, s\u1ef1 xu\u1ed1ng c\u1ea5p d\u1ea7n d\u1ea7n n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u0103ng chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng m\u1ea1ng kh\u00f4ng mong mu\u1ed1n. B\u1eb1ng c\u00e1ch l\u00e0m theo khuy\u1ebfn ngh\u1ecb b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> trong l\u00fac l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, b\u1ea1n c\u00f3 th\u1ec3 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a b\u1ea1n c\u00e1p quang<\/em> v\u00e0 duy tr\u00ec m\u1ea1ng l\u01b0\u1edbi c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru trong nhi\u1ec1u n\u0103m.<\/p>\n\n\n\n

B\u00e1n k\u00ednh u\u1ed1n cong s\u1ee3i trong c\u00e1c lo\u1ea1i c\u00e1p quang kh\u00e1c nhau<\/h2>\n\n\n\n

S\u1ee3i quang \u0111\u01a1n mode v\u00e0 b\u00e1n k\u00ednh u\u1ed1n cong<\/h3>\n\n\n\n

Ch\u1ebf \u0111\u1ed9 \u0111\u01a1n c\u00e1p quang<\/em><\/a> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 truy\u1ec1n m\u1ed9t t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng duy nh\u1ea5t qua kho\u1ea3ng c\u00e1ch xa, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean ph\u1ed5 bi\u1ebfn trong c\u00e1c m\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 k\u1ebft n\u1ed1i internet \u0111\u01b0\u1eddng d\u00e0i. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, s\u1ee3i \u0111\u01a1n mode c\u00f3 l\u00f5i nh\u1ecf h\u01a1n\u2014th\u01b0\u1eddng kho\u1ea3ng 8 \u0111\u1ebfn 10 micromet\u2014l\u00e0m cho ch\u00fang nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi u\u1ed1n cong. Do l\u00f5i nh\u1ecf h\u01a1n n\u00e0y, b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111\u1ed1i v\u1edbi s\u1ee3i \u0111\u01a1n mode th\u01b0\u1eddng l\u1edbn h\u01a1n, ngh\u0129a l\u00e0 ch\u00fang kh\u00f4ng th\u1ec3 u\u1ed1n cong ch\u1eb7t nh\u01b0 c\u00e1c lo\u1ea1i s\u1ee3i kh\u00e1c. V\u00ed d\u1ee5, m\u1ed9t s\u1ee3i \u0111\u01a1n mode \u0111i\u1ec3n h\u00ecnh c\u00e1p quang<\/em> c\u00f3 th\u1ec3 c\u00f3 m\u1ee9c t\u1ed1i thi\u1ec3u b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> kho\u1ea3ng 30 mm, ho\u1eb7c kho\u1ea3ng 10 \u0111\u1ebfn 15 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a n\u00f3, \u0111\u1ec3 tr\u00e1nh m\u1ea5t \u0111\u1ed9 u\u1ed1n cong \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

\"D\u00e2y<\/a>
D\u00e2y nh\u1ea3y quang<\/figcaption><\/figure>\n\n\n\n

S\u1ee3i \u0111a mode v\u00e0 b\u00e1n k\u00ednh u\u1ed1n cong<\/h3>\n\n\n\n

\u0110a ch\u1ebf \u0111\u1ed9 c\u00e1p quang<\/em> c\u00f3 th\u1ec3 mang nhi\u1ec1u t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng c\u00f9ng m\u1ed9t l\u00fac, khi\u1ebfn ch\u00fang tr\u1edf n\u00ean l\u00fd t\u01b0\u1edfng cho nh\u1eefng kho\u1ea3ng c\u00e1ch ng\u1eafn h\u01a1n, nh\u01b0 trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u ho\u1eb7c m\u1ea1ng c\u1ee5c b\u1ed9 (LAN). Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, s\u1ee3i \u0111a ch\u1ebf \u0111\u1ed9 c\u00f3 l\u00f5i l\u1edbn h\u01a1n\u2014th\u01b0\u1eddng l\u00e0 50 \u0111\u1ebfn 62,5 micromet\u2014l\u00e0m cho ch\u00fang \u00edt nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi u\u1ed1n cong so v\u1edbi s\u1ee3i \u0111\u01a1n ch\u1ebf \u0111\u1ed9. Do \u0111\u00f3, b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> cho \u0111a ch\u1ebf \u0111\u1ed9 c\u00e1p quang<\/em> th\u01b0\u1eddng nh\u1ecf h\u01a1n, cho ph\u00e9p u\u1ed1n cong ch\u1eb7t h\u01a1n. V\u00ed d\u1ee5, c\u00e1p \u0111a ch\u1ebf \u0111\u1ed9 c\u00f3 th\u1ec3 c\u00f3 t\u1ed1i thi\u1ec3u b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> c\u00f3 \u0111\u01b0\u1eddng k\u00ednh kho\u1ea3ng 15 mm ho\u1eb7c g\u1ea5p kho\u1ea3ng 5 \u0111\u1ebfn 10 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a n\u00f3, t\u00f9y thu\u1ed9c v\u00e0o thi\u1ebft k\u1ebf c\u00e1p c\u1ee5 th\u1ec3.<\/p>\n\n\n\n

C\u00e1p quang kh\u00f4ng b\u1ecb u\u1ed1n cong<\/h3>\n\n\n\n

Trong nh\u1eefng n\u0103m g\u1ea7n \u0111\u00e2y, c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> \u0111\u00e3 gi\u1edbi thi\u1ec7u u\u1ed1n cong kh\u00f4ng nh\u1ea1y c\u1ea3m c\u00e1p quang<\/em>, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 x\u1eed l\u00fd c\u00e1c kh\u00fac cua ch\u1eb7t h\u01a1n m\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t t\u00edn hi\u1ec7u \u0111\u00e1ng k\u1ec3. C\u00e1c lo\u1ea1i c\u00e1p n\u00e0y s\u1eed d\u1ee5ng thi\u1ebft k\u1ebf l\u00f5i v\u00e0 v\u1ecf b\u1ecdc \u0111\u1eb7c bi\u1ec7t \u0111\u1ec3 gi\u1eef t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng \u0111\u01b0\u1ee3c ch\u1ee9a ngay c\u1ea3 khi c\u00e1p b\u1ecb u\u1ed1n cong m\u1ea1nh h\u01a1n. Trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, c\u00e1p kh\u00f4ng b\u1ecb u\u1ed1n cong th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf nh\u1eefng kh\u00f4ng gian ch\u1eadt h\u1eb9p\u2014nh\u01b0 c\u00e1c t\u00f2a nh\u00e0 chung c\u01b0 ho\u1eb7c trung t\u00e2m d\u1eef li\u1ec7u \u0111\u00f4ng \u0111\u00fac\u2014n\u01a1i kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi vi\u1ec7c \u0111\u1ecbnh tuy\u1ebfn c\u00e1p quanh c\u00e1c g\u00f3c. b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> cho u\u1ed1n cong kh\u00f4ng nh\u1ea1y c\u1ea3m c\u00e1p quang<\/em> c\u00f3 th\u1ec3 th\u1ea5p t\u1edbi 7,5 mm, ho\u1eb7c kho\u1ea3ng 2 \u0111\u1ebfn 5 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u00e1p, khi\u1ebfn ch\u00fang linh ho\u1ea1t h\u01a1n nhi\u1ec1u trong khi v\u1eabn duy tr\u00ec hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

H\u01b0\u1edbng d\u1eabn th\u1ef1c t\u1ebf \u0111\u1ec3 qu\u1ea3n l\u00fd b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/h2>\n\n\n\n

Theo th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t<\/h3>\n\n\n\n

Nguy\u00ean t\u1eafc \u0111\u1ea7u ti\u00ean v\u00e0 quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 qu\u1ea3n l\u00fd b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> TRONG l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em> l\u00e0 tu\u00e2n theo c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t d\u00e0nh cho b\u1ea1n c\u00e1p quang<\/em>. M\u1ed7i lo\u1ea1i c\u00e1p \u0111\u1ec1u c\u00f3 b\u1ea3ng d\u1eef li\u1ec7u li\u1ec7t k\u00ea c\u00e1c th\u00f4ng s\u1ed1 t\u1ed1i thi\u1ec3u c\u1ee7a n\u00f3 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>, th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh cho c\u1ea3 \u0111i\u1ec1u ki\u1ec7n ng\u1eafn h\u1ea1n (trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t) v\u00e0 d\u00e0i h\u1ea1n (sau khi l\u1eafp \u0111\u1eb7t). V\u00ed d\u1ee5, c\u00e1p c\u00f3 th\u1ec3 cho ph\u00e9p u\u1ed1n cong ch\u1eb7t h\u01a1n trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t\u2014v\u00ed d\u1ee5, g\u1ea5p 10 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a n\u00f3\u2014nh\u01b0ng y\u00eau c\u1ea7u b\u00e1n k\u00ednh l\u1edbn h\u01a1n, nh\u01b0 g\u1ea5p 15 l\u1ea7n \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a n\u00f3, sau khi l\u1eafp \u0111\u1eb7t \u0111\u1ec3 tr\u00e1nh \u1ee9ng su\u1ea5t d\u00e0i h\u1ea1n. Lu\u00f4n ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt n\u00e0y tr\u01b0\u1edbc khi \u0111\u1ecbnh tuy\u1ebfn c\u00e1p quang<\/em> \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea1n \u0111ang \u1edf trong gi\u1edbi h\u1ea1n an to\u00e0n.<\/p>\n\n\n\n

S\u1eed d\u1ee5ng c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd c\u00e1p ph\u00f9 h\u1ee3p<\/h3>\n\n\n\n

TRONG l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, s\u1eed d\u1ee5ng \u0111\u00fang c\u00f4ng c\u1ee5 c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n qu\u1ea3n l\u00fd b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> hi\u1ec7u qu\u1ea3. C\u00e1c m\u00e1ng c\u00e1p, \u1ed1ng d\u1eabn v\u00e0 thanh d\u1eabn b\u00e1n k\u00ednh u\u1ed1n cong \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1p quang<\/em> v\u00e0 ng\u0103n kh\u00f4ng cho ch\u00fang b\u1ecb u\u1ed1n cong qu\u00e1 ch\u1eb7t. V\u00ed d\u1ee5, m\u1ed9t thanh d\u1eabn b\u00e1n k\u00ednh u\u1ed1n cong c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t mi\u1ebfng nh\u1ef1a cong m\u00e0 b\u1ea1n g\u1eafn \u1edf m\u1ed9t g\u00f3c, \u0111\u1ea3m b\u1ea3o c\u00e1p \u0111i theo m\u1ed9t \u0111\u01b0\u1eddng cong tr\u01a1n tru, an to\u00e0n. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng \u1edf nh\u1eefng kh\u00f4ng gian ch\u1eadt h\u1eb9p, nh\u01b0 b\u00ean trong gi\u00e1 \u0111\u1ee1 thi\u1ebft b\u1ecb ho\u1eb7c \u1ed1ng d\u1eabn tr\u00ean t\u01b0\u1eddng, n\u01a1i c\u00e1p d\u1ec5 b\u1ecb u\u1ed1n cong \u0111\u1ed9t ng\u1ed9t.<\/p>\n\n\n\n

Tr\u00e1nh nh\u1eefng l\u1ed7i u\u1ed1n cong th\u00f4ng th\u01b0\u1eddng<\/h3>\n\n\n\n

C\u00f3 m\u1ed9t s\u1ed1 l\u1ed7i th\u01b0\u1eddng g\u1eb7p c\u1ea7n tr\u00e1nh trong qu\u00e1 tr\u00ecnh l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em> \u0111\u1ec3 b\u1ea3o v\u1ec7 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>. \u0110\u1ea7u ti\u00ean, \u0111\u1eebng \u00e9p bu\u1ed9c c\u00e1p quang<\/em> quanh m\u1ed9t g\u00f3c nh\u1ecdn\u2014lu\u00f4n s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng cong d\u1ea7n d\u1ea7n. Th\u1ee9 hai, tr\u00e1nh bu\u1ed9c c\u00e1p qu\u00e1 ch\u1eb7t b\u1eb1ng d\u00e2y bu\u1ed9c, v\u00ec \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 k\u1eb9p c\u00e1p v\u00e0 t\u1ea1o ra c\u00e1c v\u1ebft cong nh\u1ecf. Th\u1ee9 ba, h\u00e3y th\u1eadn tr\u1ecdng khi k\u00e9o c\u00e1p qua \u1ed1ng d\u1eabn; \u0111\u1ed9 c\u0103ng qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 khi\u1ebfn c\u00e1p b\u1ecb cong qu\u00e1 \u0111\u1ed9t ng\u1ed9t t\u1ea1i c\u00e1c \u0111i\u1ec3m v\u00e0o ho\u1eb7c ra. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba n\u00e0y \u0111\u1ea3m b\u1ea3o c\u00e1p quang<\/em> th\u1ef1c hi\u1ec7n \u0111\u00e1ng tin c\u1eady m\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t t\u00edn hi\u1ec7u.<\/p>\n\n\n\n

B\u00e1n k\u00ednh u\u1ed1n s\u1ee3i trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf<\/h2>\n\n\n\n

L\u1eafp \u0111\u1eb7t c\u00e1p quang t\u1ea1i c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u<\/h3>\n\n\n\n

Trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, c\u00e1p quang<\/em> k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7, c\u00f4ng t\u1eafc v\u00e0 thi\u1ebft b\u1ecb l\u01b0u tr\u1eef, th\u01b0\u1eddng \u1edf nh\u1eefng kh\u00f4ng gian r\u1ea5t \u0111\u00f4ng \u0111\u00fac. Trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em> cho c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u, qu\u1ea3n l\u00fd b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> r\u1ea5t quan tr\u1ecdng v\u00ec c\u00e1p th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111i qua nh\u1eefng kh\u00f4ng gian ch\u1eadt h\u1eb9p, nh\u01b0 d\u01b0\u1edbi s\u00e0n nh\u00e0 ho\u1eb7c b\u00ean trong gi\u00e1 \u0111\u1ee1 thi\u1ebft b\u1ecb. S\u1eed d\u1ee5ng kh\u00f4ng nh\u1ea1y c\u1ea3m v\u1edbi u\u1ed1n cong c\u00e1p quang<\/em> c\u00f3 th\u1ec3 gi\u00fap \u00edch, v\u00ec ch\u00fang cho ph\u00e9p u\u1ed1n cong ch\u1eb7t h\u01a1n m\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t t\u00edn hi\u1ec7u. Tuy nhi\u00ean, ngay c\u1ea3 v\u1edbi nh\u1eefng lo\u1ea1i c\u00e1p n\u00e0y, ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c bi\u1ec7n ph\u00e1p qu\u1ea3n l\u00fd c\u00e1p ph\u00f9 h\u1ee3p \u0111\u1ec3 tr\u00e1nh v\u01b0\u1ee3t qu\u00e1 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>, \u0111\u1ea3m b\u1ea3o vi\u1ec7c truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao kh\u00f4ng b\u1ecb gi\u00e1n \u0111o\u1ea1n.<\/p>\n\n\n\n

C\u00f4ng ngh\u1ec7 c\u00e1p quang trong m\u00f4i tr\u01b0\u1eddng d\u00e2n d\u1ee5ng<\/h3>\n\n\n\n

Trong m\u00f4i tr\u01b0\u1eddng d\u00e2n c\u01b0, c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> ng\u00e0y c\u00e0ng ph\u1ed5 bi\u1ebfn \u0111\u1ed1i v\u1edbi internet t\u1ed1c \u0111\u1ed9 cao, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1p quang \u0111\u1ebfn t\u1eadn nh\u00e0 (FTTH<\/a>). TRONG l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em> cho nh\u00e0 \u1edf, c\u00e1p quang<\/em> c\u00f3 th\u1ec3 c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1ecbnh tuy\u1ebfn qua c\u00e1c b\u1ee9c t\u01b0\u1eddng, quanh c\u00e1c g\u00f3c ho\u1eb7c ph\u00eda sau \u0111\u1ed3 n\u1ed9i th\u1ea5t. b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> tr\u1edf th\u00e0nh m\u1ed1i lo ng\u1ea1i trong nh\u1eefng kh\u00f4ng gian ch\u1eadt h\u1eb9p n\u00e0y, \u0111\u1eb7c bi\u1ec7t l\u00e0 n\u1ebfu ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t kh\u00f4ng c\u1ea9n th\u1eadn. V\u00ed d\u1ee5, u\u1ed1n cong c\u00e1p qu\u00e1 m\u1ea1nh quanh khung c\u1eeda c\u00f3 th\u1ec3 g\u00e2y m\u1ea5t t\u00edn hi\u1ec7u, d\u1eabn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 internet ch\u1eadm h\u01a1n. S\u1eed d\u1ee5ng c\u00e1p kh\u00f4ng nh\u1ea1y u\u1ed1n cong v\u00e0 k\u1ef9 thu\u1eadt \u0111\u1ecbnh tuy\u1ebfn ph\u00f9 h\u1ee3p gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y.<\/p>\n\n\n\n

M\u1ea1ng vi\u1ec5n th\u00f4ng v\u00e0 k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng d\u00e0i<\/h3>\n\n\n\n

Trong m\u1ea1ng vi\u1ec5n th\u00f4ng, c\u00e1p quang<\/em> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c k\u1ebft n\u1ed1i \u0111\u01b0\u1eddng d\u00e0i, ch\u1eb3ng h\u1ea1n nh\u01b0 gi\u1eefa c\u00e1c th\u00e0nh ph\u1ed1 ho\u1eb7c qua \u0111\u1ea1i d\u01b0\u01a1ng. Trong c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng n\u00e0y, ch\u1ebf \u0111\u1ed9 \u0111\u01a1n c\u00e1p quang<\/em> ph\u1ed5 bi\u1ebfn do kh\u1ea3 n\u0103ng truy\u1ec1n t\u00edn hi\u1ec7u qua kho\u1ea3ng c\u00e1ch xa. Tuy nhi\u00ean, nh\u1eefng lo\u1ea1i c\u00e1p n\u00e0y c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>, khi\u1ebfn ch\u00fang nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi vi\u1ec7c u\u1ed1n cong. Trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>C\u00e1c k\u1ef9 s\u01b0 vi\u1ec5n th\u00f4ng ph\u1ea3i \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1p \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t theo \u0111\u01b0\u1eddng cong nh\u1eb9 nh\u00e0ng, th\u01b0\u1eddng s\u1eed d\u1ee5ng \u1ed1ng d\u1eabn l\u1edbn ho\u1eb7c h\u1ec7 th\u1ed1ng \u0103ng-ten \u0111\u1ec3 tr\u00e1nh u\u1ed1n cong qu\u00e1 m\u1ee9c, \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a t\u00edn hi\u1ec7u tr\u00ean kho\u1ea3ng c\u00e1ch xa.<\/p>\n\n\n\n

\"c\u00e1p<\/a>
c\u00e1p quang ngo\u00e0i tr\u1eddi<\/figcaption><\/figure>\n\n\n\n

Th\u00e1ch th\u1ee9c v\u00e0 gi\u1ea3i ph\u00e1p trong vi\u1ec7c qu\u1ea3n l\u00fd b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/h2>\n\n\n\n

Nh\u1eefng th\u00e1ch th\u1ee9c trong kh\u00f4ng gian ch\u1eadt h\u1eb9p<\/h3>\n\n\n\n

M\u1ed9t trong nh\u1eefng th\u00e1ch th\u1ee9c l\u1edbn nh\u1ea5t trong vi\u1ec7c qu\u1ea3n l\u00fd b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111ang l\u00e0m vi\u1ec7c trong kh\u00f4ng gian ch\u1eadt h\u1eb9p, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u00ean trong t\u1ee7 thi\u1ebft b\u1ecb ho\u1eb7c qua c\u00e1c \u1ed1ng d\u1eabn h\u1eb9p. Trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, nh\u1eefng m\u00f4i tr\u01b0\u1eddng n\u00e0y khi\u1ebfn vi\u1ec7c tr\u00e1nh nh\u1eefng kh\u00fac cua g\u1ea5p tr\u1edf n\u00ean kh\u00f3 kh\u0103n, l\u00e0m t\u0103ng nguy c\u01a1 m\u1ea5t t\u00edn hi\u1ec7u ho\u1eb7c h\u01b0 h\u1ecfng c\u00e1p quang<\/em>. V\u00ed d\u1ee5, trong m\u1ed9t trung t\u00e2m d\u1eef li\u1ec7u \u0111\u00f4ng \u0111\u00fac, c\u00f3 th\u1ec3 c\u00f3 \u00edt kh\u00f4ng gian \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn c\u00e1p v\u1edbi b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 hi\u1ec7u su\u1ea5t.<\/p>\n\n\n\n

Gi\u1ea3i ph\u00e1p: C\u00e1p v\u00e0 d\u1ee5ng c\u1ee5 kh\u00f4ng b\u1ecb cong<\/h3>\n\n\n\n

\u0110\u1ec3 gi\u1ea3i quy\u1ebft th\u00e1ch th\u1ee9c n\u00e0y, c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> \u0111\u00e3 ph\u00e1t tri\u1ec3n kh\u00f4ng nh\u1ea1y c\u1ea3m v\u1edbi u\u1ed1n cong c\u00e1p quang<\/em>, c\u00f3 th\u1ec3 x\u1eed l\u00fd c\u00e1c kh\u00fac cua ch\u1eb7t h\u01a1n m\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t t\u00edn hi\u1ec7u \u0111\u00e1ng k\u1ec3, nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3. Ngo\u00e0i ra, s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng c\u1ee5 chuy\u00ean d\u1ee5ng nh\u01b0 b\u1ed9 b\u1ea3o v\u1ec7 b\u00e1n k\u00ednh u\u1ed1n cong\u2014c\u00e1c thanh d\u1eabn cong nh\u1ecf gi\u00fap c\u00e1p kh\u00f4ng b\u1ecb u\u1ed1n cong qu\u00e1 \u0111\u1ed9t ng\u1ed9t\u2014c\u00f3 th\u1ec3 gi\u00fap \u00edch. Trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>, k\u1ebft h\u1ee3p c\u00e1c gi\u1ea3i ph\u00e1p n\u00e0y v\u1edbi k\u1ebf ho\u1ea1ch c\u1ea9n th\u1eadn, ch\u1eb3ng h\u1ea1n nh\u01b0 l\u1eadp b\u1ea3n \u0111\u1ed3 tuy\u1ebfn c\u00e1p tr\u01b0\u1edbc, \u0111\u1ea3m b\u1ea3o r\u1eb1ng b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> \u0111\u01b0\u1ee3c t\u00f4n tr\u1ecdng ngay c\u1ea3 trong kh\u00f4ng gian ch\u1eadt h\u1eb9p.<\/p>\n\n\n\n

\u0110\u00e0o t\u1ea1o v\u00e0 n\u00e2ng cao nh\u1eadn th\u1ee9c cho ng\u01b0\u1eddi c\u00e0i \u0111\u1eb7t<\/h3>\n\n\n\n

M\u1ed9t th\u00e1ch th\u1ee9c kh\u00e1c l\u00e0 \u0111\u1ea3m b\u1ea3o r\u1eb1ng ng\u01b0\u1eddi c\u00e0i \u0111\u1eb7t nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c t\u1ea7m quan tr\u1ecdng c\u1ee7a b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em>. TRONG c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em>, x\u1eed l\u00fd kh\u00f4ng \u0111\u00fang c\u00e1ch trong l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>\u2014nh\u01b0 u\u1ed1n c\u00e1p qu\u00e1 ch\u1eb7t ho\u1eb7c s\u1eed d\u1ee5ng l\u1ef1c qu\u00e1 m\u1ee9c\u2014c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn c\u00e1c v\u1ea5n \u0111\u1ec1 t\u1ee9c th\u1eddi ho\u1eb7c l\u00e2u d\u00e0i. Gi\u1ea3i ph\u00e1p n\u1eb1m \u1edf vi\u1ec7c \u0111\u00e0o t\u1ea1o ph\u00f9 h\u1ee3p: ng\u01b0\u1eddi l\u1eafp \u0111\u1eb7t n\u00ean \u0111\u01b0\u1ee3c \u0111\u00e0o t\u1ea1o v\u1ec1 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt cho c\u00e1p quang<\/em> h\u1ecd \u0111ang l\u00e0m vi\u1ec7c c\u00f9ng v\u1edbi c\u00e1c bi\u1ec7n ph\u00e1p t\u1ed1t nh\u1ea5t \u0111\u1ec3 \u0111\u1ecbnh tuy\u1ebfn v\u00e0 c\u1ed1 \u0111\u1ecbnh c\u00e1p nh\u1eb1m tr\u00e1nh l\u1ed7i u\u1ed1n cong.<\/p>\n\n\n\n

K\u1ebft lu\u1eadn: L\u00e0m ch\u1ee7 b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i \u0111\u1ec3 c\u00f3 hi\u1ec7u su\u1ea5t s\u1ee3i quang t\u1ed1t h\u01a1n<\/h2>\n\n\n\n

Kh\u00e1i ni\u1ec7m c\u1ee7a b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> c\u00f3 v\u1ebb nh\u01b0 l\u00e0 m\u1ed9t chi ti\u1ebft nh\u1ecf, nh\u01b0ng n\u00f3 \u0111\u00f3ng vai tr\u00f2 r\u1ea5t l\u1edbn trong hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1p quang<\/em>. B\u1eb1ng c\u00e1ch hi\u1ec3u nh\u1eefng g\u00ec b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> l\u00e0, t\u1ea1i sao n\u00f3 quan tr\u1ecdng v\u00e0 c\u00e1ch qu\u1ea3n l\u00fd n\u00f3, b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng l\u1eafp \u0111\u1eb7t c\u00e1p quang<\/em>\u2014cho d\u00f9 l\u00e0 nh\u00e0 \u1edf, trung t\u00e2m d\u1eef li\u1ec7u hay m\u1ea1ng vi\u1ec5n th\u00f4ng\u2014cung c\u1ea5p k\u1ebft n\u1ed1i nhanh ch\u00f3ng, \u0111\u00e1ng tin c\u1eady. T\u1eeb vi\u1ec7c tu\u00e2n th\u1ee7 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ebfn s\u1eed d\u1ee5ng kh\u00f4ng nh\u1ea1y c\u1ea3m v\u1edbi u\u1ed1n cong c\u00e1p quang<\/em> v\u00e0 c\u00e1c c\u00f4ng c\u1ee5 qu\u1ea3n l\u00fd c\u00e1p ph\u00f9 h\u1ee3p, c\u00f3 nh\u1eefng b\u01b0\u1edbc th\u1ef1c t\u1ebf b\u1ea1n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u1ec3 tr\u00e1nh nh\u1eefng c\u1ea1m b\u1eaby c\u1ee7a vi\u1ec7c u\u1ed1n cong qu\u00e1 m\u1ee9c. Nh\u01b0 c\u00f4ng ngh\u1ec7 s\u1ee3i quang<\/em> ti\u1ebfp t\u1ee5c ph\u00e1t tri\u1ec3n, lu\u00f4n ghi nh\u1edb b\u00e1n k\u00ednh u\u1ed1n s\u1ee3i<\/em> s\u1ebd gi\u00fap b\u1ea1n t\u1eadn d\u1ee5ng t\u1ed1i \u0111a c\u00e1p quang<\/em>, gi\u00fap m\u1ea1ng c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru trong nhi\u1ec1u n\u0103m t\u1edbi.<\/p>","protected":false},"excerpt":{"rendered":"

Khi n\u00f3i \u0111\u1ebfn c\u00e1p quang, m\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 quan tr\u1ecdng nh\u1ea5t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u0111\u00e1ng tin c\u1eady trong c\u00f4ng ngh\u1ec7 c\u00e1p quang l\u00e0 hi\u1ec3u kh\u00e1i ni\u1ec7m b\u00e1n k\u00ednh u\u1ed1n cong c\u1ee7a s\u1ee3i. H\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng vi\u1ec7c u\u1ed1n cong m\u1ed9t \u1ed1ng h\u00fat qu\u00e1 m\u1ea1nh\u2014n\u00f3 c\u00f3 th\u1ec3 b\u1ecb xo\u1eafn v\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. T\u01b0\u01a1ng t\u1ef1 nh\u01b0 v\u1eady, vi\u1ec7c u\u1ed1n cong c\u00e1p quang qu\u00e1 ch\u1eb7t c\u00f3 th\u1ec3 l\u00e0m gi\u00e1n \u0111o\u1ea1n t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng truy\u1ec1n \u0111i [\u2026]<\/p>","protected":false},"author":1,"featured_media":3541,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Fiber Bending Radius: Key to Signal Performance","_seopress_titles_desc":"","_seopress_robots_index":"","footnotes":""},"categories":[34],"tags":[],"class_list":["post-3538","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3538","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/comments?post=3538"}],"version-history":[{"count":8,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3538\/revisions"}],"predecessor-version":[{"id":3552,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/posts\/3538\/revisions\/3552"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media\/3541"}],"wp:attachment":[{"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/media?parent=3538"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/categories?post=3538"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/commmesh.com\/vi\/wp-json\/wp\/v2\/tags?post=3538"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}