Invention Grant
- Patent Title: Optical communication module and optical communication device
- Patent Title (中): 光通信模块和光通信设备
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Application No.: US13085470Application Date: 2011-04-12
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Publication No.: US08503888B2Publication Date: 2013-08-06
- Inventor: Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
- Applicant: Takashi Takemoto , Hiroki Yamashita , Shinji Tsuji
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Miles & Stockbridge, P.C.
- Priority: JP2010-092130 20100413
- Main IPC: H04B10/04
- IPC: H04B10/04 ; H04B10/12

Abstract:
An optical communication module and an optical communication device including the same are provided. For example, a first semiconductor chip on which a laser diode is formed and a second semiconductor chip on which a laser diode driver circuit, etc. for subjecting the laser diode to drive by current are formed are mounted on a package printed circuit board to be close to each other. Temperature detecting means is further formed on the second semiconductor chip (laser diode driver circuit, etc.). The temperature detecting means detects a temperature variation ΔT of the first semiconductor chip (laser diode) transmitted via a wiring in the package printed circuit board and controls the magnitude of the driving current of the laser diode driver circuit based on a detection result.
Public/Granted literature
- US20110249980A1 OPTICAL COMMUNICATION MODULE AND OPTICAL COMMUNICATION DEVICE Public/Granted day:2011-10-13
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