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Title:
LASER DIODE DRIVER, DIRECT LIGHT AMPLIFICATION DEVICE, LIGHT SIGNAL TRANSMISSION SYSTEM AND LASER DIODE DRIVING METHOD
Document Type and Number:
WIPO Patent Application WO/2014/208048
Kind Code:
A1
Abstract:
In order to prevent the overall excitation laser diode intensity from changing when any of a plurality of in-use excitation laser diodes is switched to a spare excitation laser diode, the present invention provides a laser diode driver which is provided with a driving means which, in response to the output state of a plurality of laser diodes connected in series between two power sources, controls the driving of a prescribed laser diode. The driving means includes a current control means taking as an input a signal corresponding to the output of an individual laser diode and controlling the current supplied to the individual laser diode in response to the input signal, a current path control means for controlling the current control means in response to the input signal, and a laser diode control means for controlling the current supplied between the power sources in response to the input signal.

Inventors:
YAMAGUCHI SHOHEI (JP)
Application Number:
PCT/JP2014/003245
Publication Date:
December 31, 2014
Filing Date:
June 17, 2014
Export Citation:
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Assignee:
NEC CORP (JP)
International Classes:
H01S5/0683; H01S3/10; H04B10/29
Foreign References:
JPH10284789A1998-10-23
JPH06338647A1994-12-06
JPH11121849A1999-04-30
JPH05252116A1993-09-28
JPH043029A1992-01-08
JP2005065173A2005-03-10
JP2001044557A2001-02-16
JP2001007768A2001-01-12
JP2007104064A2007-04-19
JP2005057036A2005-03-03
US20110176201A12011-07-21
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
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