Title:
Generation of the optical local oscillator signal for a coherent detection scheme
Document Type and Number:
Japanese Patent JP6199995
Kind Code:
B2
Abstract:
An optical receiver having an optical IQ modulator configured to generate an optical local-oscillator (OLO) signal for optical homodyne detection of an optical input signal applied to the optical receiver. The optical receiver further has (i) a phase detector configured to generate an electrical measure of the phase difference between the OLO signal and a carrier wave of the optical input signal and (ii) a phase-lock loop configured to drive the optical IQ modulator using the electrical measure. In an embodiment, the phase detector is configured to generate the electrical measure using both I and Q components of the homodyne-detected signal and in a manner that enables the optical receiver to be compatible with the M-QAM modulation format.
Inventors:
Kisho Kaneda
Application Number:
JP2015553754A
Publication Date:
September 20, 2017
Filing Date:
January 08, 2014
Export Citation:
Assignee:
Alcatel-Lucent
International Classes:
H04B10/63; G02F2/00; H04B10/075
Domestic Patent References:
| JP2009135930A | ||||
| JP2011199645A |
Foreign References:
| US20100277790 |
Attorney, Agent or Firm:
Okabe
Koji Yoshizawa
Haruhiko Mimura
Tomoki Kubota
Yoichi Okabe
Koji Yoshizawa
Haruhiko Mimura
Tomoki Kubota
Yoichi Okabe
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