Title:
光伝送装置及び光素子
Document Type and Number:
Japanese Patent JP7079391
Kind Code:
B2
Abstract:
An optical transmission apparatus includes first and second optical waveguides to transmit light of multiple wavelengths; optical couplers on the waveguides, to couple the lights transmitted through the waveguides, so as to output the coupled light to the waveguides; phase shifters provided at preceding stages of part of the optical couplers, to change a phase shift amount of the light transmitted through the first and/or second optical waveguides, wherein the number of optical couplers in the part is greater than or equal to the number of the types of wavelengths; a monitor to monitor the intensity of the light output to the second optical waveguide via the optical coupler at the last stage; and a controller to control the phase shifters by changing the phase shift amount for each of the phase shifters in a direction in which the output of the monitor decreases.
Inventors:
Tomoyuki Akiyama
Application Number:
JP2018204405A
Publication Date:
June 02, 2022
Filing Date:
October 30, 2018
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04J14/02; G02B6/12; G02B6/126; G02F1/01; G02F1/035; H04B10/60
Domestic Patent References:
| JP2016018048A | ||||
| JP2014059542A | ||||
| JP7281215A | ||||
| JP2017175521A | ||||
| JP10319444A | ||||
| JP2004094213A |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito
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