公开(公告)号：JPH09129985A

公开(公告)日：1997-05-16

申请号：JP23628496

申请日：1996-09-06

Applicant: LUCENT TECHNOLOGIES INC

Inventor： SWAMINATHAN VENKATARAMAN ,  WOODWARD SHERYL L ,  BODEEP GEORGE E

IPC: H01L23/38 ,  G02B6/42 ,  H01S3/04 ,  H01S5/00 ,  H01S5/024 ,  H04B10/155 ,  H01S3/18 ,  H01S3/043

Abstract: PROBLEM TO BE SOLVED: To improve the reliability of controlling temperature within a loop device by surrounding an optical transmitter with an adapter, connecting a heat exchanging element to the adapter, and mounting the heat exchanging element on mounting block so as to cool the optical transmitter SOLUTION: A front face 321 of an optical transmitter 320 allows the modulated optical signal to enter an optical fiber cable 310. An adapter 340 is thermally kept in contact with a heat exchanging element 350 and the optical transmitter 320. the heat exchanging element 350 and a printed circuit board 330 are mounted on a mounting block 360. The heat exchanging element 350 has a function of thermionic cooling by peltier effect. A sensor lead 382 is connected with a sensor 381 on the adapter 340. The sensor lead 382 is connected with a controller 380 for cooling device, so that a current is allowed to flow through a lead 384 to the heat exchanging element 350 in contact with the adapter 340.

公开(公告)号：DE69736936D1

公开(公告)日：2006-12-28

申请号：DE69736936

申请日：1997-01-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BODEEP GEORGE E ,  LU XIAOLIN ,  DARCIE THOMAS EDWARD ,  WOODWARD SHERYL LEIGH

IPC: H01S3/10 ,  G02F2/02 ,  H01S5/00 ,  H04J14/02 ,  H04B10/02 ,  H04B10/18 ,  H04B10/24

Abstract: A method and apparatus for reducing noise in optical communication systems, wherein the frequency of light output from a signal laser is modulated or dithered to broaden the optical spectrum of the signal laser. The broadening allows error-free data transmission within signal bands, despite the presence of optical beat interference. Different dithering tones are emitted by each laser in the network. The dithering tone for each signal laser in an optical network is chosen so that distortion resulting from the dithering tone falls outside the signal bands.

公开(公告)号：DE69736936T2

公开(公告)日：2007-10-31

申请号：DE69736936

申请日：1997-01-21

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BODEEP GEORGE E ,  LU XIAOLIN ,  DARCIE THOMAS EDWARD ,  WOODWARD SHERYL LEIGH

IPC: G02F2/02 ,  H01S3/10 ,  H04J14/02 ,  H01S5/00 ,  H04B10/02 ,  H04B10/18 ,  H04B10/24

Abstract: A method and apparatus for reducing noise in optical communication systems, wherein the frequency of light output from a signal laser is modulated or dithered to broaden the optical spectrum of the signal laser. The broadening allows error-free data transmission within signal bands, despite the presence of optical beat interference. Different dithering tones are emitted by each laser in the network. The dithering tone for each signal laser in an optical network is chosen so that distortion resulting from the dithering tone falls outside the signal bands.

公开(公告)号：CA2193018A1

公开(公告)日：1997-08-02

申请号：CA2193018

申请日：1996-12-16

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BODEEP GEORGE E ,  DARCIE THOMAS EDWARD ,  LU XIAOLIN ,  WOODWARD SHERYL LEIGH

IPC: G02F2/02 ,  H01S3/10 ,  H01S5/00 ,  H04B10/02 ,  H04B10/18 ,  H04J14/02 ,  H04B10/145

Abstract: A method and apparatus for reducing noise in optical communication systems, wherein the frequency of light output from a signal laser is modulated or dithered to broaden the optical spectrum of the signal laser. The broadening allows error-free data transmission within signal bands, despite the presence of optical beat interference. Different dithering tones are emitted by each laser in the network. The dithering tone for each signal laser in an optical network is chosen so that distortion resulting from the dithering tone falls outside the signal bands.