Title:
光通信モジュール及び半導体レーザ出力制御方法
Document Type and Number:
Japanese Patent JP4924144
Kind Code:
B2
Abstract:
An optical communication module includes a semiconductor laser drive circuit configured to supply a drive current to a semiconductor laser so as to output a laser beam; a drive control section configured to control the semiconductor laser drive circuit based on an ambient temperature of the semiconductor laser such that the output light beam has a predetermined light level, and the drive current falls within a predetermined range. A light quantity adjusting section removes a part of the laser beam to produce an output light beam from a remaining portion of the laser beam when the laser beam passes through the light quantity adjusting section, and a quantity of the removed apart of the laser beam depends on a wavelength of the laser beam and an ambient temperature of the semiconductor laser.
More Like This:
Inventors:
Mamoru Oguro
Application Number:
JP2007086650A
Publication Date:
April 25, 2012
Filing Date:
March 29, 2007
Export Citation:
Assignee:
NEC
International Classes:
G02B6/42; G02B6/122; H01S5/0683
Domestic Patent References:
| JP2001358362A | ||||
| JP2007005857A | ||||
| JP7020336A |
Attorney, Agent or Firm:
Masahiko Desk
Naoki Shimosaka
Naoki Shimosaka