公开(公告)号：EP3075082A4

公开(公告)日：2017-08-09

申请号：EP14871745

申请日：2014-11-25

Applicant: APPLIED OPTOELECTRONICS INC

Inventor： HO I-LUNG ,  PENG LUOHAN ,  LI JOYCE

IPC: H04B10/27 ,  G02B6/12 ,  G02B6/32 ,  G02B6/42 ,  H04J14/02

CPC classification number: G02B6/4215 ,  G02B6/12009 ,  G02B6/12019 ,  G02B6/4228

公开(公告)号：EP2954628A4

公开(公告)日：2016-09-28

申请号：EP14749420

申请日：2014-02-04

Applicant: APPLIED OPTOELECTRONICS INC

Inventor： HO I-LUNG ,  ZHENG JUN ,  PENG LUOHAN

IPC: H04J14/00 ,  G02B6/42

CPC classification number: G02B6/4246 ,  G02B6/12019 ,  G02B6/12026 ,  G02B6/4271 ,  G02B6/4273 ,  H04J14/0282

Abstract: A thermally shielded multi-channel transmitter optical subassembly (TOSA) may be used in a multi-channel optical transceiver. The multi-channel TOSA generally includes an array of lasers optically coupled to an arrayed waveguide grating (AWG) to combine multiple optical signals at different channel wavelengths. A plurality of laser array thermal shields are thermally coupled to a temperature control device, such as a thermoelectric cooler (TEC), and thermally shield the respective lasers in the laser array in separate thermally shielded compartments. Each of the lasers may also be individually thermally controlled to provide a desired wavelength, for example, using a heater and/or cooler located in each thermally shielded compartment. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).