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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 20 — Oct. 3, 2005
  • pp: 8038–8044

All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying

Tetsuya Kawanishi, Takahide Sakamoto, and Masayuki Izutsu  »View Author Affiliations


Optics Express, Vol. 13, Issue 20, pp. 8038-8044 (2005)
http://dx.doi.org/10.1364/OPEX.13.008038


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Abstract

We have realized a novel optical modulation format conversion using double-sideband suppressed-carrier modulation. An optical wideband frequency-shift-keying (FSK) signal, generated by an external FSK modulator, can be directly converted into an optical phase-shift-keying (PSK) signal, where the FSK signal having two spectral components was fed to an optical intensity modulator followed by an optical bandpass filter. Optical frequency of the FSK signal was mapped into optical phase of the bandpass filter output whose phase deviation depends on a chirp of the FSK signal. We demonstrated modulation format conversion from FSK to PSK at 10 Gbps, by using a high-speed optical FSK modulator and a dual electrode Mach-Zehnder intensity modulator.

© 2005 Optical Society of America

OCIS Codes
(060.2630) Fiber optics and optical communications : Frequency modulation
(060.4080) Fiber optics and optical communications : Modulation
(070.6020) Fourier optics and signal processing : Continuous optical signal processing

ToC Category:
Research Papers

History
Original Manuscript: July 8, 2005
Revised Manuscript: September 16, 2005
Published: October 3, 2005

Citation
Tetsuya Kawanishi, Takahide Sakamoto, and Masayuki Izutsu, "All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying," Opt. Express 13, 8038-8044 (2005)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-13-20-8038


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References

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