{"id":3474,"date":"2025-12-03T14:25:00","date_gmt":"2025-12-03T14:25:00","guid":{"rendered":"https:\/\/lp.szlogic.cn\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers\/"},"modified":"2026-06-22T04:23:45","modified_gmt":"2026-06-22T04:23:45","slug":"continuous-time-linear-equalizer-ctle-in-optics-transceivers","status":"publish","type":"post","link":"https:\/\/resourceslp.szlogic.cn\/vi\/glossary\/continuous-time-linear-equalizer-ctle-in-optics-transceivers","title":{"rendered":"Gi\u1ea3i M\u00e3 CTLE: Thi\u1ebft Y\u1ebfu cho Quang T\u1ed1c \u0110\u1ed9 Cao & \u0110\u01b0\u1eddng Truy\u1ec1n D\u1eef Li\u1ec7u"},"content":{"rendered":"
\"CTLE<\/figure>\n\n\n\n

Khi t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u t\u0103ng v\u1ecdt l\u00ean 10 Gbps, 25 Gbps v\u00e0 cao h\u01a1n n\u1eefa trong c\u00e1c b\u1ed9 chuy\u1ec3n m\u1ea1ch m\u1ea1ng, m\u00e1y ch\u1ee7 v\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef, k\u00eanh v\u1eadt l\u00fd k\u1ebft n\u1ed1i c\u00e1c chip v\u00e0 m\u00f4-\u0111un t\u1ea1o ra m\u1ed9t tr\u1edf ng\u1ea1i c\u01a1 b\u1ea3n: t\u1ed5n th\u1ea5t k\u00eanh<\/strong>. T\u1ed5n th\u1ea5t n\u00e0y, ch\u1ee7 y\u1ebfu do hi\u1ec7u \u1ee9ng b\u1ec1 m\u1eb7t, h\u1ea5p th\u1ee5 \u0111i\u1ec7n m\u00f4i v\u00e0 s\u1ef1 gi\u00e1n \u0111o\u1ea1n tr\u1edf kh\u00e1ng tr\u00ean c\u00e1c \u0111\u01b0\u1eddng d\u1eabn PCB ho\u1eb7c c\u00e1p \u0111\u1ed3ng, ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t b\u1ed9 l\u1ecdc th\u00f4ng th\u1ea5p.<\/p>\n\n\n\n

H\u00e0nh \u0111\u1ed9ng l\u1ecdc n\u00e0y l\u00e0m suy gi\u1ea3m nghi\u00eam tr\u1ecdng c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 cao c\u1ee7a t\u00edn hi\u1ec7u truy\u1ec1n \u0111i. K\u1ebft qu\u1ea3 l\u00e0 bi\u1ec3u \u0111\u1ed3 m\u1eaft b\u1ecb suy gi\u1ea3m, \u0111\u1eb7c tr\u01b0ng b\u1edfi vi\u1ec7c gi\u1ea3m chi\u1ec1u cao m\u1eaft<\/strong> v\u00e0 \u0111\u00e1ng k\u1ec3 nhi\u1ec5u gi\u1eefa c\u00e1c k\u00fd hi\u1ec7u (ISI)<\/strong><\/a>. N\u1ebfu kh\u00f4ng c\u00f3 b\u00f9 tr\u1eeb m\u1ea1nh m\u1ebd, vi\u1ec7c kh\u00f4i ph\u1ee5c d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady s\u1ebd tr\u1edf n\u00ean b\u1ea5t kh\u1ea3 thi.<\/p>\n\n\n\n

\u0110\u00e2y l\u00e0 n\u01a1i m\u00e0 B\u1ed9 c\u00e2n b\u1eb1ng tuy\u1ebfn t\u00ednh th\u1eddi gian li\u00ean t\u1ee5c (CTLE)<\/strong>, m\u1ed9t th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu trong c\u00e1c ki\u1ebfn tr\u00fac b\u1ed9 n\u1ed1i ti\u1ebfp\/t\u00e1ch n\u1ed1i ti\u1ebfp (SerDes)<\/a> hi\u1ec7n \u0111\u1ea1i, b\u01b0\u1edbc v\u00e0o vai tr\u00f2 n\u00e0y.<\/p>\n\n\n\n

\u27a1\ufe0f CTLE l\u00e0 g\u00ec?<\/h2>\n\n\n\n

A B\u1ed9 c\u00e2n b\u1eb1ng tuy\u1ebfn t\u00ednh th\u1eddi gian li\u00ean t\u1ee5c (CTLE)<\/strong> l\u00e0 m\u1ed9t m\u1ea1ch c\u00e2n b\u1eb1ng t\u01b0\u01a1ng t\u1ef1 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf \u0111\u1ea7u thu c\u1ee7a c\u00e1c li\u00ean k\u1ebft d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 SerDes<\/a> k\u00eanh \u0111\u1ed3ng ho\u1eb7c b\u1ed9 thu m\u00f4-\u0111un quang<\/a> \u2014 nh\u1eb1m b\u00f9 l\u1ea1i c\u00e1c t\u1ed5n th\u1ea5t k\u00eanh ph\u1ee5 thu\u1ed9c t\u1ea7n s\u1ed1 l\u00e0m suy gi\u1ea3m \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u. <\/p>\n\n\n\n

Kh\u00e1c v\u1edbi c\u00e1c b\u1ed9 c\u00e2n b\u1eb1ng k\u1ef9 thu\u1eadt s\u1ed1, CTLE ho\u1ea1t \u0111\u1ed9ng trong mi\u1ec1n t\u01b0\u01a1ng t\u1ef1: n\u00f3 \u0111i\u1ec1u ch\u1ec9nh \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 c\u1ee7a t\u00edn hi\u1ec7u t\u01b0\u01a1ng t\u1ef1 nh\u1eadn \u0111\u01b0\u1ee3c tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n b\u1ea5t k\u1ef3 kh\u00f4i ph\u1ee5c \u0111\u1ed3ng h\u1ed3 hay quy\u1ebft \u0111\u1ecbnh k\u00fd hi\u1ec7u n\u00e0o, khu\u1ebfch \u0111\u1ea1i c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 cao \u0111\u00e3 b\u1ecb suy hao v\u00e0 \u1ee9c ch\u1ebf c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 th\u1ea5p chi\u1ebfm \u01b0u th\u1ebf qu\u00e1 m\u1ee9c. <\/p>\n\n\n\n

\u27a1\ufe0f V\u00ec sao c\u1ea7n CTLE<\/h2>\n\n\n\n

T\u1ed5n th\u1ea5t k\u00eanh trong c\u00e1c li\u00ean k\u1ebft t\u1ed1c \u0111\u1ed9 cao<\/h3>\n\n\n\n

Trong c\u00e1c k\u00eanh t\u1ed1c \u0111\u1ed9 cao th\u1ef1c t\u1ebf \u2014 d\u00f9 l\u00e0 \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ed3ng,<\/strong>, m\u1ed9t \u0111\u1ecbnh tuy\u1ebfn backplane,<\/strong>, hay m\u1ed9t giao di\u1ec7n quang-\u0111i\u1ec7n<\/strong> trong module quang
<\/a> \u2014 m\u00f4i tr\u01b0\u1eddng v\u1eadt l\u00fd th\u1ec3 hi\u1ec7n t\u1ed5n th\u1ea5t ph\u1ee5 thu\u1ed9c t\u1ea7n s\u1ed1: c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 cao (mang c\u00e1c chuy\u1ec3n ti\u1ebfp s\u1eafc n\u00e9t v\u00e0 c\u00e1c c\u1ea1nh c\u1ee7a d\u1ea1ng s\u00f3ng k\u1ef9 thu\u1eadt s\u1ed1) b\u1ecb suy hao nhi\u1ec1u h\u01a1n c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 th\u1ea5p. \u0110i\u1ec1u n\u00e0y xu\u1ea5t ph\u00e1t t\u1eeb c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 hi\u1ec7u \u1ee9ng b\u1ec1 m\u1eb7t, t\u1ed5n th\u1ea5t \u0111i\u1ec7n m\u00f4i, sai l\u1ec7ch tr\u1edf kh\u00e1ng v\u00e0 t\u1ed5n th\u1ea5t ch\u00e8n n\u00f3i chung ph\u1ee5 thu\u1ed9c t\u1ea7n s\u1ed1.<\/p>\n\n\n\n

H\u1ec7 qu\u1ea3 l\u00e0, sau khi truy\u1ec1n \u0111i, c\u00e1c c\u1ea1nh c\u1ee7a d\u1ea1ng s\u00f3ng nh\u1eadn \u0111\u01b0\u1ee3c tr\u1edf n\u00ean \u00edt s\u1eafc n\u00e9t h\u01a1n, bi\u00ean \u0111\u1ed9 gi\u1ea3m v\u00e0 \u201cbi\u1ec3u \u0111\u1ed3 m\u1eaft\u201d d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 b\u1ecb co l\u1ea1i (\u0111\u00f3ng m\u1eaft), d\u1eabn \u0111\u1ebfn gia t\u0103ng nhi\u1ec5u gi\u1eefa c\u00e1c k\u00fd hi\u1ec7u (ISI)<\/strong><\/a> v\u00e0 suy gi\u1ea3m t\u1ef7 l\u1ec7 l\u1ed7i bit (BER)<\/strong><\/a>. <\/p>\n\n\n\n

Kh\u00f4i ph\u1ee5c \u0111\u1ed9 to\u00e0n v\u1eb9n t\u00edn hi\u1ec7u th\u00f4ng qua c\u00e2n b\u1eb1ng<\/h3>\n\n\n\n

\u0110\u1ec3 ch\u1ed1ng l\u1ea1i hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, \u0111\u1ea7u thu s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt c\u00e2n b\u1eb1ng \u2014 m\u1ee5c ti\u00eau l\u00e0 \u201ch\u1ee7y b\u1ecf\u201d hi\u1ec7u \u1ee9ng l\u1ecdc c\u1ee7a k\u00eanh v\u00e0 kh\u00f4i ph\u1ee5c \u0111\u00e1p \u1ee9ng t\u1ea7n s\u1ed1 c\u00e2n b\u1eb1ng. CTLE
<\/strong> CTLE tri\u1ec3n khai m\u1ed9t d\u1ea1ng b\u1ed9 l\u1ecdc th\u00f4ng cao (ho\u1eb7c b\u1ed9 l\u1ecdc t\u0103ng c\u01b0\u1eddng) trong mi\u1ec1n t\u01b0\u01a1ng t\u1ef1: khu\u1ebfch \u0111\u1ea1i c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 cao trong khi l\u00e0m suy gi\u1ea3m ho\u1eb7c gi\u1eef nguy\u00ean c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea7n s\u1ed1 th\u1ea5p (ho\u1eb7c th\u1eadm ch\u00ed \u1ee9c ch\u1ebf ch\u00fang). <\/p>\n\n\n\n

Tr\u00ean th\u1ef1c t\u1ebf, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 sau x\u1eed l\u00fd CTLE, \u0111\u00e1p \u1ee9ng t\u1ed5ng h\u1ee3p c\u1ee7a \u201ck\u00eanh + CTLE\u201d<\/strong> tr\u1edf n\u00ean \u0111\u1ed3ng \u0111\u1ec1u h\u01a1n tr\u00ean d\u1ea3i t\u1ea7n li\u00ean quan (t\u1ee9c l\u00e0 g\u1ea7n h\u01a1n v\u1edbi \u0111\u00e1p \u1ee9ng to\u00e0n b\u0103ng), c\u1ea3i thi\u1ec7n \u0111\u1ed9 s\u1eafc n\u00e9t c\u1ee7a c\u00e1c c\u1ea1nh, kh\u00f4i ph\u1ee5c \u0111\u1ed9 m\u1edf m\u1eaft, l\u00e0m gi\u1ea3m hi\u1ec7u \u1ee9ng ISI<\/strong>, v\u00e0 gi\u00fap kh\u00f4i ph\u1ee5c th\u1eddi \u0111i\u1ec3m (kh\u00f4i ph\u1ee5c \u0111\u1ed3ng h\u1ed3\/d\u1eef li\u1ec7u<\/strong><\/a>) \u0111\u00e1ng tin c\u1eady h\u01a1n \u2014 t\u1ea5t c\u1ea3 \u0111\u1ec1u di\u1ec5n ra tr\u01b0\u1edbc b\u1ea5t k\u1ef3 c\u00e2n b\u1eb1ng k\u1ef9 thu\u1eadt s\u1ed1 hay logic quy\u1ebft \u0111\u1ecbnh n\u00e0o.<\/p>\n\n\n\n

L\u01b0u \u00fd d\u00e0nh ri\u00eang cho k\u1ef9 s\u01b0 m\u00f4-\u0111un quang<\/h3>\n\n\n\n

Khi t\u1ed1c \u0111\u1ed9 d\u1eef li\u1ec7u ti\u1ebfp t\u1ee5c t\u0103ng \u2014 100G, 200G, 400G v\u00e0 cao h\u01a1n n\u1eefa \u2014 c\u00e1c suy gi\u1ea3m k\u00eanh (t\u1ed5n th\u1ea5t, t\u00e1n s\u1eafc, gh\u00e9p n\u1ed1i, ph\u1ea3n x\u1ea1 tr\u00ean PCB, chuy\u1ec3n ti\u1ebfp s\u1ee3i quang\/\u0111i\u1ec7n) ng\u00e0y c\u00e0ng nghi\u00eam tr\u1ecdng h\u01a1n. C\u00e2n b\u1eb1ng kh\u00f4ng c\u00f2n l\u00e0 t\u00f9y ch\u1ecdn; m\u00e0 l\u00e0 n\u1ec1n t\u1ea3ng b\u1eaft bu\u1ed9c.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c c\u00f4ng ty nh\u01b0 LINK\u2011PP<\/strong><\/a> T\u1eadp trung v\u00e0o b\u1ed9 thu ph\u00e1t quang, \u0111\u1ea3m b\u1ea3o \u0111\u1ea7u thu (RX) ph\u00eda tr\u01b0\u1edbc c\u1ee7a b\u1ea1n h\u1ed7 tr\u1ee3 CTLE m\u1ea1nh m\u1ebd (v\u00e0 t\u00f9y ch\u1ecdn DFE) l\u00e0 \u0111i\u1ec1u then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady<\/strong>, t\u1ef7 l\u1ec7 l\u1ed7i bit th\u1ea5p (BER)<\/strong>, and t\u01b0\u01a1ng th\u00edch<\/strong> tr\u00ean c\u00e1c lo\u1ea1i s\u1ee3i quang kh\u00e1c nhau (MMF \/ SMF), chi\u1ec1u d\u00e0i c\u00e1p, \u0111\u01b0\u1eddng d\u1eabn PCB v\u00e0 lo\u1ea1i \u0111\u1ea7u n\u1ed1i.<\/p>\n\n\n\n

H\u01a1n n\u1eefa, \u0111\u1ed1i v\u1edbi n\u1ed9i dung ti\u1ebfp th\u1ecb v\u00e0 k\u1ef9 thu\u1eadt: gi\u1ea3i th\u00edch r\u1eb1ng m\u00f4-\u0111un c\u1ee7a b\u1ea1n t\u00edch h\u1ee3p c\u00e1c c\u00f4ng ngh\u1ec7 c\u00e2n b\u1eb1ng \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng nh\u01b0 CTLE (v\u00e0 t\u00f9y ch\u1ecdn DFE) s\u1ebd gi\u00fap n\u00e2ng cao ni\u1ec1m tin c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 ph\u00f9 h\u1ee3p v\u1edbi k\u1ef3 v\u1ecdng ng\u00e0nh hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

\u27a1\ufe0f CTLE ho\u1ea1t \u0111\u1ed9ng nh\u01b0 th\u1ebf n\u00e0o<\/h2>\n\n\n\n
\"How<\/figure>\n\n\n\n

\u25cf H\u00e0m truy\u1ec1n \u2014 H\u00e0nh vi t\u0103ng c\u01b0\u1eddng trong mi\u1ec1n t\u1ea7n s\u1ed1<\/h3>\n\n\n\n

H\u00e0nh vi c\u1ee7a CTLE th\u01b0\u1eddng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 th\u00f4ng qua h\u00e0m truy\u1ec1n mi\u1ec1n t\u1ea7n s\u1ed1. \u1ede d\u1ea1ng \u0111\u01a1n gi\u1ea3n nh\u1ea5t, m\u1ed9t m\u1ea1ng RC (ho\u1eb7c R\u2011C\/L\u2011C) th\u1ee5 \u0111\u1ed9ng (ho\u1eb7c ch\u1ee7 \u0111\u1ed9ng) cung c\u1ea5p m\u1ed9t \u0111\u00e1p \u1ee9ng th\u00f4ng cao\/t\u0103ng c\u01b0\u1eddng<\/strong>. Hi\u1ec7u \u1ee9ng t\u1ed5ng h\u1ee3p l\u00e0 \u00e1p d\u1ee5ng \u0111\u1ed9 l\u1ee3i l\u1edbn h\u01a1n \u1edf t\u1ea7n s\u1ed1 cao so v\u1edbi t\u1ea7n s\u1ed1 th\u1ea5p, nh\u1eb1m b\u00f9 l\u1ea1i xu h\u01b0\u1edbng th\u00f4ng th\u1ea5p c\u1ee7a k\u00eanh. <\/p>\n\n\n\n

V\u1ec1 m\u1eb7t tri\u1ec3n khai, m\u1ed9t CTLE c\u00f3 th\u1ec3 bao g\u1ed3m s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a \u0111i\u1ec7n tr\u1edf (R),<\/strong><\/a>, <\/strong>t\u1ee5 \u0111i\u1ec7n (C),<\/strong><\/a>, c\u00f3 th\u1ec3 k\u00e8m theo <\/strong>cu\u1ed9n c\u1ea3m (L),<\/strong><\/a>, v\u00e0 c\u00e1c t\u1ea7ng khu\u1ebfch \u0111\u1ea1i \u2014 d\u01b0\u1edbi d\u1ea1ng m\u1ea1ch th\u1ee5 \u0111\u1ed9ng ho\u1eb7c b\u1ed9 c\u00e2n b\u1eb1ng ch\u1ee7 \u0111\u1ed9ng c\u00f3 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9 l\u1ee3i. <\/p>\n\n\n\n

S\u1ef1 \u201ct\u0103ng c\u01b0\u1eddng\u201d (ho\u1eb7c \u201czero\/pole\u201d) trong h\u00e0m truy\u1ec1n th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh sao cho d\u1ea3i t\u1ea7n s\u1ed1 \u0111\u01b0\u1ee3c CTLE khu\u1ebfch \u0111\u1ea1i kh\u1edbp v\u1edbi d\u1ea3i t\u1ea7n s\u1ed1 quan tr\u1ecdng c\u1ee7a t\u00edn hi\u1ec7u d\u1eef li\u1ec7u (v\u00ed d\u1ee5: l\u00ean t\u1edbi t\u1ea7n s\u1ed1 Nyquist c\u1ee7a t\u1ed1c \u0111\u1ed9 bit SerDes) nh\u1eb1m t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3 b\u00f9 tr\u1eeb. <\/p>\n\n\n\n

\u25cf T\u00edch h\u1ee3p trong \u0111\u1ea7u thu ph\u00eda tr\u01b0\u1edbc (RX)<\/h3>\n\n\n\n

Trong m\u1ed9t h\u1ec7 th\u1ed1ng SerDes<\/a> ho\u1eb7c ki\u1ebfn tr\u00fac b\u1ed9 thu m\u00f4-\u0111un quang, CTLE \u0111\u01b0\u1ee3c \u0111\u1eb7t ngay t\u1ea1i giai \u0111o\u1ea1n \u0111\u1ea7u v\u00e0o t\u01b0\u01a1ng t\u1ef1 (sau c\u00e1c t\u1ee5 gh\u00e9p, n\u1ebfu c\u00f3), tr\u01b0\u1edbc b\u1ea5t k\u1ef3 kh\u00f4i ph\u1ee5c \u0111\u1ed3ng h\u1ed3\/d\u1eef li\u1ec7u (CDR)<\/strong><\/a> hay l\u1ea5y m\u1eabu k\u1ef9 thu\u1eadt s\u1ed1 n\u00e0o. <\/p>\n\n\n\n

\u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o t\u00edn hi\u1ec7u kh\u00f4i ph\u1ee5c c\u00f3 \u0111\u1ee7 \u0111\u1ed9 s\u1eafc n\u00e9t c\u1ee7a c\u00e1c c\u1ea1nh v\u00e0 bi\u00ean \u0111\u1ed9 \u0111\u1ec3 kh\u00f4i ph\u1ee5c \u0111\u1ed3ng h\u1ed3\/d\u1eef li\u1ec7u m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady. Sau khi th\u1ef1c hi\u1ec7n CTLE v\u00e0 CDR,<\/strong>, c\u00e1c k\u1ef9 thu\u1eadt c\u00e2n b\u1eb1ng b\u1ed5 sung (v\u00ed d\u1ee5: c\u00e2n b\u1eb1ng k\u1ef9 thu\u1eadt s\u1ed1, b\u1ed9 c\u00e2n b\u1eb1ng phi tuy\u1ebfn nh\u01b0 B\u1ed9 c\u00e2n b\u1eb1ng ph\u1ea3n h\u1ed3i quy\u1ebft \u0111\u1ecbnh \u2013 DFE) c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 gi\u1ea3m nhi\u1ec5u gi\u1eefa c\u00e1c k\u00fd hi\u1ec7u (ISI) c\u00f2n s\u00f3t l\u1ea1i.<\/p>\n\n\n\n

\u27a1\ufe0f CTLE trong Th\u1ef1c t\u1ebf \u2014 N\u01a1i \u0110\u01b0\u1ee3c S\u1eed D\u1ee5ng & C\u00e1c \u01afu \u0110i\u1ec3m v\u00e0 \u0110\u00e1nh \u0110\u1ed5i c\u1ee7a N\u00f3<\/h2>\n\n\n\n

\u25b7 \u1ee8ng d\u1ee5ng: SerDes, M\u00f4-\u0111un Quang T\u1ed1c \u0110\u1ed9 Cao<\/h3>\n\n\n\n

CTLE \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c giao di\u1ec7n n\u1ed1i ti\u1ebfp t\u1ed1c \u0111\u1ed9 cao (SerDes), v\u00ed d\u1ee5 nh\u01b0, PCIe<\/a>, USB, li\u00ean k\u1ebft backplane \u2014 v\u00e0 quan tr\u1ecdng kh\u00f4ng k\u00e9m, trong truy\u1ec1n th\u00f4ng quang t\u1ed1c \u0111\u1ed9 cao, n\u01a1i vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i quang\u2013\u0111i\u1ec7n, s\u1ef1 ph\u00e2n t\u00e1n s\u1ee3i quang, t\u1ed5n hao c\u00e1p v\u00e0 \u0111\u00f3ng g\u00f3i b\u1ed9 thu ph\u00e1t \u0111\u1ec1u g\u00f3p ph\u1ea7n g\u00e2y ra t\u1ed5n hao ph\u1ee5 thu\u1ed9c t\u1ea7n s\u1ed1. <\/p>\n\n\n\n

In module quang
<\/strong><\/a>, CTLE gi\u00fap \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c t\u00edn hi\u1ec7u \u2014 sau khi \u0111i qua s\u1ee3i quang, ph\u1ea7n ph\u00eda tr\u01b0\u1edbc b\u1ed9 thu ph\u00e1t, c\u00e1c \u0111\u01b0\u1eddng d\u1eabn tr\u00ean b\u1ea3ng m\u1ea1ch in (PCB) v\u00e0 c\u00e1c \u0111\u1ea7u n\u1ed1i \u2014 v\u1eabn duy tr\u00ec d\u1ea1ng s\u00f3ng s\u1ea1ch v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng cao t\u1ea1i b\u1ed9 thu, t\u1eeb \u0111\u00f3 cho ph\u00e9p truy\u1ec1n d\u1eef li\u1ec7u b\u0103ng th\u00f4ng r\u1ed9ng \u0111\u00e1ng tin c\u1eady (100\u202fG, 200\u202fG, 400\u202fG, v.v.).<\/p>\n\n\n\n

\u2605 CTLE trong B\u1ed9 Thu Ph\u00e1t Quang LINK-PP<\/h4>\n\n\n\n
\"LINK-PP<\/figure>\n\n\n\n

\u0110\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m k\u1ebft n\u1ed1i t\u1ed1c \u0111\u1ed9 cao nh\u01b0 M\u00f4-\u0111un SFP LINK-PP<\/strong><\/a> ph\u1ee5 thu\u1ed9c tr\u1ef1c ti\u1ebfp v\u00e0o c\u00f4ng ngh\u1ec7 c\u00e2n b\u1eb1ng (equalization) m\u1ea1nh m\u1ebd<\/strong>.<\/p>\n\n\n\n

B\u1ed9 thu ph\u00e1t quang, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng b\u1ed9 ho\u1ea1t \u0111\u1ed9ng \u1edf t\u1ed1c \u0111\u1ed9 Kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec5u \u0111i\u1ec7n t\u1eeb, \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t \u1ed5n \u0111\u1ecbnh trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t.<\/a>\/25G<\/a>\/100G
<\/a> tr\u1edf l\u00ean (v\u00ed d\u1ee5:, SFP+, QSFP28
<\/strong>), th\u01b0\u1eddng s\u1eed d\u1ee5ng CTLE hi\u1ec7u n\u0103ng cao c\u1ea3 \u1edf \u0111\u1ea7u v\u00e0o \u0111i\u1ec7n (nh\u1eadn d\u1eef li\u1ec7u t\u1eeb th\u1ebb ch\u1ee7) v\u00e0 \u0111\u00f4i khi \u1edf b\u1ed9 \u0111i\u1ec1u khi\u1ec3n laser\/b\u1ed9 khu\u1ebfch \u0111\u1ea1i d\u00f2ng \u0111i\u1ec7n (TIA).<\/p>\n\n\n\n