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US 9,866,344 B2Granted
Frequency conversion device, wavelength multiplex device and frequency conversion method
AssigneeFujitsu Limited
InventorFutoshi Izumi
Life of this patent
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Abstract
A frequency conversion device includes: an optical convertor configured to convert a source modulated light into an unmodulated light; and a frequency convertor configured to use the unmodulated light converted by the optical convertor as a reference light and convert the source modulated light into a modulated light that has a desirable frequency.
Claims15
A frequency conversion device comprising:
- an optical convertor configured to convert a source modulated light into an unmodulated light by resonating the source modulated light and extracting a center frequency of the source modulated light during the resonating;
- and
- a frequency convertor configured to use the unmodulated light converted by the optical convertor as a reference light and convert the source modulated light into a modulated light that has a desirable frequency.
A wavelength multiplex device comprising:
- a multiplexer that multiplexes a plurality of wavelength lights;
- a plurality of frequency conversion devices that are respectively coupled with each inputting port of the multiplexer, the plurality of frequency conversion devices comprising an optical convertor configured to convert a source modulated light into an unmodulated light by resonating the source modulated light and extracting a center frequency of the source modulated light during the resonating and a frequency convertor configured to use the unmodulated light converted by the optical convertor as a reference light and convert the source modulated light into a modulated light that has a desirable frequency;
- and
- an optical switch that inputs an arbitrary wavelength light into one of the plurality of frequency conversion devices.
1 more element
A frequency conversion method comprising:
- converting a source modulated light into an unmodulated light, with an optical convertor, by resonating the source modulated light and extracting a center frequency of the source modulated light during the resonating;
- and
- using the unmodulated light as a reference light and converting the source modulated light into a modulated light having a desirable frequency, with a frequency convertor.
Dependencies are inferred from the claim text.