Title:
SYNCHRONIZED OPTICAL SIGNAL GENERATION DEVICE AND SYNCHRONIZED OPTICAL SIGNAL GENERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2008/007615
Kind Code:
A1
Abstract:
A synchronized optical signal generation device includes: optical phase detection means which compares the phase of a reference optical signal and the phase of a beat optical signal and generates a phase error signal; rectifying means which rectifies the phase error signal; and voltage control optical signal generation means which generates and outputs a beat signal according to the rectified phase error signal and feeds back the beat optical signal to the phase detection means. The voltage control optical signal generation means includes: voltage control electric signal generation means which generates and outputs an electric signal corresponding to the rectified phase error signal; an optical comb generation means which generates an optical comb signal having an optical spectrum line of a frequency interval corresponding to the electric signal generated by the voltage control electric signal generation means; 2-mode selection means which selects an optical signal of the optical spectrum line of two wavelengths from the optical comb signal; and 2-mode multiplexing means which multiplexes the optical signals of the selected two wavelengths so as to be outputted as a beat optical signal and feeds backs the beat optical signal to the phase detection means.
Inventors:
TAKASAKA SHIGEHIRO (JP)
OZEKI YASUYUKI (JP)
SAKANO MISAO (JP)
OZEKI YASUYUKI (JP)
SAKANO MISAO (JP)
Application Number:
PCT/JP2007/063539
Publication Date:
January 17, 2008
Filing Date:
July 06, 2007
Export Citation:
Assignee:
JAPAN SCIENCE & TECH AGENCY (JP)
FURUKAWA ELECTRIC CO LTD (JP)
TAKASAKA SHIGEHIRO (JP)
OZEKI YASUYUKI (JP)
SAKANO MISAO (JP)
FURUKAWA ELECTRIC CO LTD (JP)
TAKASAKA SHIGEHIRO (JP)
OZEKI YASUYUKI (JP)
SAKANO MISAO (JP)
International Classes:
G02F2/00
Domestic Patent References:
| WO2006041103A1 | 2006-04-20 | |||
| WO2003104886A1 | 2003-12-18 |
Foreign References:
| JP2004062153A | 2004-02-26 | |||
| JP2002156616A | 2002-05-31 | |||
| JP2000174699A | 2000-06-23 | |||
| JP2002318374A | 2002-10-31 |
Other References:
FUKUSHIMA S. ET AL.: "Optoelectronic Synthesis of Milliwatt-Level Multi-Octave Millimeter-Wave Signals Using an Optical Frequency Comb Generator and a Unitraveling-Carrier Photodiode", IEEE PHOTONICS TECHNOLOGY LETTERS, vol. 13, no. 7, July 2001 (2001-07-01), pages 720 - 722, XP011047669
See also references of EP 2040117A4
See also references of EP 2040117A4
Attorney, Agent or Firm:
ARAFUNE, Hiroshi et al. (Nikko Kagurazaka Bldg.18, Iwatocho, Shinjuku-ku, Tokyo 32, JP)
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