公开(公告)号：JP2001217502A

公开(公告)日：2001-08-10

申请号：JP2000381366

申请日：2000-12-15

Applicant: LUCENT TECHNOLOGIES INC

Inventor： O'BRIEN STEPHEN ,  BROUTIN SCOTT L ,  HARTMAN ROBERT L ,  STAYT JR JOHN WILLIAM

IPC: H01S5/0687 ,  H04B10/50 ,  H04B10/572 ,  H04J14/00 ,  H04J14/02 ,  H04B10/04 ,  H04B10/06 ,  H04B10/14

Abstract: PROBLEM TO BE SOLVED: To assure correct channel selection without turning off a laser light source of a system during a channel selection process in a wavelength stabilized control system. SOLUTION: A laser module 110 has a first output 120 connected to an optical link and a second output 122 connected to a controller 160 via a signal discriminator circuit 130. The controller 160 controls a channel selection process for the system 100. During the channel selection process, the controller 160 adjusts a gain section, a modulator and an amplifier as necessary to reduce the transmission power of the first output 120 and the second output 122 so that the first output 120 can not be detected by a receiver (far-end user of the system 100) connected to the link 120. The controller 160 initiates the channel selection process by adjusting the laser module 110 and monitoring etalon characteristics of the second output 122.