Optical signal demodulator, optical signal demodulating method, and optical add-drop multiplexer
US9143242B2 · kind B2 · utility
2Cited by
3References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 29, 2013 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Dec 25, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/074
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical signal demodulator includes: an obtaining unit configured to obtain a spectrum of an optical signal generated by a second signal being superimposed on a first signal using frequency modulation; an identifying unit configured to identify a peak wavelength which is a wavelength corresponding to a peak position of the spectrum; and a demodulating unit configured to demodulate the second signal from the optical signal using a wavelength-variable filter to which a transmitted wavelength band has been set based on the peak wavelength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.