{"id":181096,"date":"2026-10-30T10:25:22","date_gmt":"2026-10-30T03:25:22","guid":{"rendered":"https:\/\/phongvu.vn\/cong-nghe\/?p=181096"},"modified":"2026-10-30T10:25:24","modified_gmt":"2026-10-30T03:25:24","slug":"chip-moi-dat-toc-do-200-gb-giay","status":"publish","type":"post","link":"https:\/\/phongvu.vn\/cong-nghe\/chip-moi-dat-toc-do-200-gb-giay\/","title":{"rendered":"Chip m\u1edbi \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 200 Gb\/gi\u00e2y nh\u1edd c\u00f4ng ngh\u1ec7 \u00e1nh s\u00e1ng ch\u1eadm"},"content":{"rendered":"\n

PV Tech News \u2013 Nh\u00f3m nghi\u00ean c\u1ee9u t\u1ea1i Nh\u1eadt B\u1ea3n v\u1eeba ph\u00e1t tri\u1ec3n chip \u0111i\u1ec1u bi\u1ebfn quang silicon d\u00e0i ch\u1ec9 0,32 mm, \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u 200 Gb\/gi\u00e2y tr\u00ean m\u1ed7i b\u01b0\u1edbc s\u00f3ng. Th\u00e0nh t\u1ef1u n\u00e0y nh\u1edd c\u1ea5u tr\u00fac l\u00e0m ch\u1eadm \u00e1nh s\u00e1ng k\u1ebft h\u1ee3p b\u1ed9 c\u00e2n b\u1eb1ng \u0111i\u1ec7n quang t\u00edch h\u1ee3p. D\u00f9 v\u1eabn \u0111ang trong giai \u0111o\u1ea1n th\u1eed nghi\u1ec7m t\u1ea1i ph\u00f2ng th\u00ed nghi\u1ec7m, c\u00f4ng ngh\u1ec7 n\u00e0y \u0111\u01b0\u1ee3c k\u1ef3 v\u1ecdng g\u00f3p ph\u1ea7n n\u00e2ng cao t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u AI.<\/strong><\/p>\n\n\n\n

Nh\u00f3m nghi\u00ean c\u1ee9u t\u1eeb Institute of Science Tokyo, \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia Yokohama, AIST v\u00e0 PETRA v\u1eeba c\u00f4ng b\u1ed1 chip \u0111i\u1ec1u bi\u1ebfn quang Reduced-DSP 200G\/\u03bb trong nghi\u00ean c\u1ee9u \u0111\u0103ng tr\u00ean t\u1ea1p ch\u00ed Nature Communications ng\u00e0y 22\/10\/2026. Chip \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 truy\u1ec1n d\u1eef li\u1ec7u 200 Gb\/gi\u00e2y tr\u00ean m\u1ed7i b\u01b0\u1edbc s\u00f3ng \u00e1nh s\u00e1ng, \u0111\u1ed3ng th\u1eddi c\u00f3 k\u00edch th\u01b0\u1edbc ch\u1ec9 0,32 mm v\u00e0 gi\u1ea3m s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1. B\u1ed9 \u0111i\u1ec1u bi\u1ebfn quang l\u00e0 linh ki\u1ec7n chuy\u1ec3n \u0111\u1ed5i d\u1eef li\u1ec7u \u0111i\u1ec7n th\u00e0nh t\u00edn hi\u1ec7u \u00e1nh s\u00e1ng \u0111\u1ec3 truy\u1ec1n qua s\u1ee3i quang. So v\u1edbi c\u00e1c b\u1ed9 \u0111i\u1ec1u bi\u1ebfn silicon Mach-Zehnder th\u00f4ng th\u01b0\u1eddng d\u00e0i kho\u1ea3ng 2\u20134 mm, thi\u1ebft k\u1ebf m\u1edbi h\u01b0\u1edbng \u0111\u1ebfn hi\u1ec7u su\u1ea5t cao h\u01a1n trong k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn.<\/p>\n\n\n\n

\"Chip
Chip m\u1edbi \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 200 Gb\/gi\u00e2y nh\u1edd c\u00f4ng ngh\u1ec7 \u00e1nh s\u00e1ng ch\u1eadm (Ngu\u1ed3n: Internet)<\/figcaption><\/figure>\n\n\n\n

\u0110\u1ec3 \u0111\u1ea1t k\u1ebft qu\u1ea3 n\u00e0y, nh\u00f3m nghi\u00ean c\u1ee9u k\u1ebft h\u1ee3p hai k\u1ef9 thu\u1eadt. C\u1ea5u tr\u00fac tinh th\u1ec3 quang h\u1ecdc v\u1edbi c\u00e1c l\u1ed7 nh\u1ecf \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed c\u00f3 ki\u1ec3m so\u00e1t gi\u00fap l\u00e0m ch\u1eadm \u00e1nh s\u00e1ng, t\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa \u00e1nh s\u00e1ng v\u00e0 thi\u1ebft b\u1ecb. Nh\u1edd \u0111\u00f3, bi\u1ebfn thi\u00ean \u0111i\u1ec7n nh\u1ecf v\u1eabn c\u00f3 th\u1ec3 t\u1ea1o ra thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong t\u00edn hi\u1ec7u quang. Tuy nhi\u00ean, c\u1ea5u tr\u00fac n\u00e0y l\u00e0m t\u0103ng \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111i\u1ec7n tr\u1edf v\u00e0 h\u1ea1n ch\u1ebf t\u1ed1c \u0111\u1ed9 ph\u1ea3n h\u1ed3i. Nh\u00f3m kh\u1eafc ph\u1ee5c b\u1eb1ng c\u00e1ch t\u00edch h\u1ee3p b\u1ed9 c\u00e2n b\u1eb1ng \u0111i\u1ec7n quang (EO equalizer) ngay tr\u00ean chip, m\u1edf r\u1ed9ng d\u1ea3i t\u1ea7n x\u1eed l\u00fd t\u1eeb 35 GHz l\u00ean 80 GHz.<\/p>\n\n\n\n

Trong th\u1eed nghi\u1ec7m, chip \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 140 Gb\/gi\u00e2y v\u1edbi ph\u01b0\u01a1ng ph\u00e1p OOK v\u00e0 180 Gb\/gi\u00e2y v\u1edbi \u0111i\u1ec1u ch\u1ebf PAM-4 m\u00e0 kh\u00f4ng c\u1ea7n b\u1ed9 x\u1eed l\u00fd t\u00edn hi\u1ec7u s\u1ed1 (DSP). Khi b\u1ed5 sung b\u1ed9 c\u00e2n b\u1eb1ng thu 11 \u0111i\u1ec3m (11-tap), t\u1ed1c \u0111\u1ed9 t\u0103ng l\u00ean 200 Gb\/gi\u00e2y. Vi\u1ec7c gi\u1ea3m ph\u1ee5 thu\u1ed9c v\u00e0o DSP gi\u00fap h\u1ea1n ch\u1ebf m\u1ee9c ti\u00eau th\u1ee5 \u0111i\u1ec7n n\u0103ng v\u00e0 \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a h\u1ec7 th\u1ed1ng, m\u1edf ra ti\u1ec1m n\u0103ng \u1ee9ng d\u1ee5ng trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u AI v\u00e0 h\u1ea1 t\u1ea7ng truy\u1ec1n d\u1eabn t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n

So v\u1edbi b\u1ed9 \u0111i\u1ec1u bi\u1ebfn silicon th\u00f4ng d\u1ee5ng, chip m\u1edbi nh\u1ecf h\u01a1n nh\u01b0ng c\u00f3 t\u1ed5n hao quang cao h\u01a1n:<\/p>\n\n\n\n

Ti\u00eau ch\u00ed<\/strong><\/td>Reduced-DSP 200G\/\u03bb<\/strong><\/td>B\u1ed9 \u0111i\u1ec1u bi\u1ebfn silicon th\u00f4ng d\u1ee5ng<\/strong><\/td><\/tr>
Chi\u1ec1u d\u00e0i<\/td>320 \u00b5m (0,32 mm)<\/td>2\u20134 mm (Mach-Zehnder)<\/td><\/tr>
T\u1ed5n hao ch\u00e8n quang<\/td>11,7\u201315,5 dB<\/td>5\u20137 dB (quang t\u1eed silicon cho trung t\u00e2m d\u1eef li\u1ec7u)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Chip g\u1ed3m b\u1ed9 \u0111i\u1ec1u bi\u1ebfn ch\u00ednh v\u00e0 b\u1ed9 c\u00e2n b\u1eb1ng, c\u00f3 t\u1ed5ng chi\u1ec1u d\u00e0i 320 \u00b5m. To\u00e0n b\u1ed9 thi\u1ebft b\u1ecb, bao g\u1ed3m \u0111i\u1ec7n c\u1ef1c, chi\u1ebfm di\u1ec7n t\u00edch kho\u1ea3ng 0,4 mm\u00b2 v\u00e0 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng quy tr\u00ecnh t\u01b0\u01a1ng th\u00edch CMOS \u2013 c\u00f4ng ngh\u1ec7 s\u1ea3n xu\u1ea5t b\u00e1n d\u1eabn ph\u1ed5 bi\u1ebfn. GS Toshihiko Baba, \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia Yokohama, cho bi\u1ebft c\u00f4ng ngh\u1ec7 \u00e1nh s\u00e1ng ch\u1eadm c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng quy tr\u00ecnh n\u00e0y, \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u v\u1ec1 t\u1ed1c \u0111\u1ed9 cao, \u0111i\u1ec7n n\u0103ng th\u1ea5p v\u00e0 k\u00edch th\u01b0\u1edbc nh\u1ecf trong c\u00e1c h\u1ec7 th\u1ed1ng trung t\u00e2m d\u1eef li\u1ec7u AI.<\/p>\n\n\n\n

Tuy nhi\u00ean, chip v\u1eabn \u0111\u1ed1i m\u1eb7t v\u1edbi th\u00e1ch th\u1ee9c v\u1ec1 t\u1ed5n hao ch\u00e8n quang, t\u1ee9c m\u1ee9c suy gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 \u00e1nh s\u00e1ng khi \u0111i qua thi\u1ebft b\u1ecb. Ch\u1ec9 s\u1ed1 n\u00e0y \u0111\u1ea1t 11,7\u201315,5 dB, cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi m\u1ee9c 5\u20137 dB th\u01b0\u1eddng th\u1ea5y \u1edf b\u1ed9 \u0111i\u1ec1u bi\u1ebfn quang t\u1eed silicon d\u00f9ng trong trung t\u00e2m d\u1eef li\u1ec7u. Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 th\u1eed kh\u1eafc ph\u1ee5c b\u1eb1ng b\u1ed9 khu\u1ebfch \u0111\u1ea1i quang, nh\u01b0ng k\u1ebft qu\u1ea3 hi\u1ec7n v\u1eabn gi\u1edbi h\u1ea1n trong m\u00f4i tr\u01b0\u1eddng ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n

\"Chip
Chip m\u1edbi m\u1edf ra h\u01b0\u1edbng ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao (Ngu\u1ed3n: Internet)<\/figcaption><\/figure>\n\n\n\n

Trong giai \u0111o\u1ea1n ti\u1ebfp theo, nh\u00f3m \u0111\u1eb7t m\u1ee5c ti\u00eau m\u1edf r\u1ed9ng d\u1ea3i b\u01b0\u1edbc s\u00f3ng \u0111\u1ec3 v\u1eadn h\u00e0nh song song 16\u201332 k\u00eanh quang, h\u01b0\u1edbng \u0111\u1ebfn t\u1ed5ng t\u1ed1c \u0111\u1ed9 3,2\u20136,4 Tb\/gi\u00e2y. Theo GS Baba, ki\u1ebfn tr\u00fac n\u00e0y c\u00f3 ti\u1ec1m n\u0103ng \u1ee9ng d\u1ee5ng trong c\u00f4ng ngh\u1ec7 quang t\u00edch h\u1ee3p \u0111\u1ed3ng \u0111\u00f3ng g\u00f3i (co-packaged optics), gi\u00fap k\u1ebft n\u1ed1i m\u00e1y ch\u1ee7 v\u00e0 thi\u1ebft b\u1ecb m\u1ea1ng trong c\u00e1c trung t\u00e2m d\u1eef li\u1ec7u AI m\u1eadt \u0111\u1ed9 cao. <\/p>\n\n\n\n

Chip \u0111i\u1ec1u bi\u1ebfn quang silicon \u0111\u1ea1t t\u1ed1c \u0111\u1ed9 200 Gb\/gi\u00e2y tr\u00ean m\u1ed7i b\u01b0\u1edbc s\u00f3ng m\u1edf ra h\u01b0\u1edbng ph\u00e1t tri\u1ec3n c\u00f4ng ngh\u1ec7 truy\u1ec1n d\u1eef li\u1ec7u t\u1ed1c \u0111\u1ed9 cao, ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng cho trung t\u00e2m d\u1eef li\u1ec7u AI. Tuy nhi\u00ean, thi\u1ebft k\u1ebf v\u1eabn c\u1ea7n kh\u1eafc ph\u1ee5c h\u1ea1n ch\u1ebf v\u1ec1 t\u1ed5n hao quang v\u00e0 tr\u1ea3i qua th\u00eam c\u00e1c th\u1eed nghi\u1ec7m tr\u01b0\u1edbc khi c\u00f3 th\u1ec3 th\u01b0\u01a1ng m\u1ea1i h\u00f3a. \u0110\u1ec3 c\u1eadp nh\u1eadt nh\u1eefng c\u00f4ng ngh\u1ec7 m\u1edbi, xu h\u01b0\u1edbng AI v\u00e0 tin t\u1ee9c ph\u1ea7n c\u1ee9ng n\u1ed5i b\u1eadt, h\u00e3y th\u01b0\u1eddng xuy\u00ean theo d\u00f5i Phong V\u0169 Tech News<\/a>.<\/p>\n\n\n\n

Ngu\u1ed3n: VnExpress<\/em><\/p>\n\n\n\n

B\u00e0i vi\u1ebft li\u00ean quan:<\/strong><\/p>\n\n\n\n