Title:
光受信器及び光伝送方法
Document Type and Number:
Japanese Patent JP6946360
Kind Code:
B2
Abstract:
To provide a photoreceiver capable of preventing degradation of an optical signal by compensating for chromatic dispersion fading only on a reception side in optical transmission.SOLUTION: A photoreceiver 30 includes a signal branching unit 311 for distributing an optical signal to a path to which a delay difference τ is given and a path to which a phase rotation φ is given, thereby branching the optical signal into a carrier component and a plurality of signal components, a signal combining unit 312 for applying a phase change of θ to the carrier component and re-combines the phase-changed carrier component with the signal components, a photodiode PD to which the combined optical signal is input to output an electrical signal, and a controller 34 for detecting from the electrical signal a value at which the power of the RF frequency of a target signal component is maximized.SELECTED DRAWING: Figure 1
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Inventors:
Beckali Abdermoura
Shota Ishimura
Shota Ishimura
Application Number:
JP2019017373A
Publication Date:
October 06, 2021
Filing Date:
February 01, 2019
Export Citation:
Assignee:
Kddi Research Institute, Inc.
International Classes:
H04B10/2513; H04B10/67
Domestic Patent References:
| JP9116500A | ||||
| JP2007060583A | ||||
| JP5153052A | ||||
| JP2016082457A |
Foreign References:
| US20010035996 |
Attorney, Agent or Firm:
Kiyotaka Sakamoto
Sanji Tanabe
Sanji Tanabe