Title:
Optical receiving circuit
Document Type and Number:
Japanese Patent JP5920467
Kind Code:
B2
Abstract:
The present invention includes a polarization beam splitter (111) that splits input signal light (Sig) into two different polarized waves (TM, TE); two variable optical attenuators (113, 114) that respectively adjust attenuation of and output signal light of the polarization states split by the polarization beam splitter (111); a single planar optical waveguide (102) on which the polarization beam splitter and the variable optical attenuators (113, 114) are disposed; and without attenuation differences of the polarization split signal light caused by polarization dependent loss, integrates variable optical attenuator function on the planar optical waveguide (102).
Inventors:
Shintaro Takeuchi
Tsuyoshi Tanaka
Tsuyoshi Tanaka
Application Number:
JP2014527842A
Publication Date:
May 18, 2016
Filing Date:
July 30, 2012
Export Citation:
Assignee:
Fujitsu Optical Components Limited
International Classes:
G02F2/00; G02B6/12; G02F1/01; H04B10/61
Domestic Patent References:
| JPH08184788A | 1996-07-16 |
Foreign References:
| WO2006013928A1 | 2006-02-09 |
Other References:
JPN6016009406; ＩＥＥＥ ＪＯＵＲＮＡＬ ＯＦ ＬＩＧＨＴＷＡＶＥ ＴＥＣＨＮＯＬＯＧＹ Ｖｏｌ．２９， Ｎｏ．７, 20110407, ｐ．１０２６-１０３２
Attorney, Agent or Firm:
Akinori Sakai
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