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Patent Searching and Data


Title:
SLOPE GAIN EQUALIZER
Document Type and Number:
WIPO Patent Application WO/2021/084938
Kind Code:
A1
Abstract:
Provided is a slope gain equalizer 1 that corrects the slope of a gain characteristic of an optical signal in a predetermined wavelength band, wherein an interference filter 5 is disposed between a dual-core fiber collimator 3 and a single-core fiber collimator 4 that are disposed to face each other on an optical axis 100, the insertion losses in a predetermined wavelength region of the interference filter in a transmission direction and a reflection direction sloping in opposite directions from the short wavelength side to the long wavelength side, an optical signal in a predetermined band inputted from a first or a second optical fiber (7, 8) held by the double-core fiber collimator is reflected by the interference filter and outputted from the second or the first optical fiber, and an optical signal inputted from a third optical fiber 11 held by the first optical fiber or the single-core fiber collimator is transmitted through the interference filter and outputted from the third or the first optical fiber.

Inventors:
OKUBO TOSHIHISA (JP)
KATO TAKASHI (JP)
Application Number:
PCT/JP2020/034528
Publication Date:
May 06, 2021
Filing Date:
September 11, 2020
Export Citation:
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Assignee:
KOHOKU KOGYO KK (JP)
International Classes:
H04B10/294; G02B6/293; G02B6/32
Domestic Patent References:
WO2018208691A12018-11-15
Foreign References:
JP2003172806A2003-06-20
US20130330039A12013-12-12
US6483631B12002-11-19
JP2010217236A2010-09-30
JP2009164565A2009-07-23
Attorney, Agent or Firm:
ISSHIKI & CO. (JP)
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