Title:
OPTICAL MODULE AND OPTICAL MONITORING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/159373
Kind Code:
A1
Abstract:
[Problem] To reduce the occupied area on a placement surface. [Solution] An optical branching unit 111 branches emitted light into first branched light α1 and second branched light α2 and emits the same. A filter 112 transmits only a specific wavelength band of the first branched light α1 as specific light α3 and emits the same. A specific light monitoring unit 113 receives and monitors the specific light α3 transmitted through and emitted by the filter 112. An emitted light monitoring unit 114 receives and monitors the second branched light α2, without such light passing through the filter 112. The filter 112 is disposed between the optical branching unit 111 and the specific light monitoring unit 113. A plane including the first branched light α1, the second branched light α2, and the specific light α3 is provided so as to extend in a direction perpendicular to a placement surface 116a on which the specific light monitoring unit 113, the emitted light monitoring unit 114, the optical branching unit 111, and the filter 112 are placed.
Inventors:
TOMITA ISAO (JP)
Application Number:
PCT/JP2018/005876
Publication Date:
September 07, 2018
Filing Date:
February 20, 2018
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H01S5/0239; H01S5/0687
Foreign References:
| JP2008053555A | 2008-03-06 | |||
| JP2010232337A | 2010-10-14 | |||
| JP2008227170A | 2008-09-25 | |||
| JP2002237651A | 2002-08-23 | |||
| US7009716B2 | 2006-03-07 |
Attorney, Agent or Firm:
SHIMOSAKA Naoki (JP)
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