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.