公开(公告)号：JP2003158505A

公开(公告)日：2003-05-30

申请号：JP2002252938

申请日：2002-08-30

Applicant: AGERE SYSTEMS INC

Inventor： CHAND NARESH ,  KOJIMA KEISUKE ,  BECK MASON THOMAS GORDON ,  YU JIANJUN

IPC: G02F1/015 ,  G02F1/017 ,  H04B10/00 ,  H04B10/158 ,  H04J14/02 ,  H04J14/08 ,  H04L7/00

Abstract: PROBLEM TO BE SOLVED: To provide an optical receiver including a single integrated device capable of substantially simultaneously performing demultiplexing and clock recovery of high-speed OTDM signals in excess of 40 Gbps. SOLUTION: Simultaneous demultiplexing and clock recovery of high-speed (e.g. 80 Gbps or 160 Gbps) optical time division multiplex (OTDM) signals is achieved using a tandem electro-absorption modulator (TEAM). The TEAM has a monolithically integrated SOA (Semiconductor Optical Amplifier) to compensate the insertion loss and two EAMs to reduce the switching window. The demultiplexing and clock recovery may be performed by a single TEAM, or by two or more TEAMs. A fiber Raman amplifier may be used to boost the intensity of the OTDM signals during transmission.