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

Tetsuya Kawanishi, Takahide Sakamoto, Masayuki Izutsu

Research output: Contribution to journalArticle

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)8038-8044
Number of pages7
JournalOptics Express
Volume13
Issue number20
DOIs
Publication statusPublished - 2005 Oct 3
Externally publishedYes

Fingerprint

frequency shift keying
phase shift keying
light modulation
format
modulators
bandpass filters
phase deviation
modulation
chirp
sidebands
high speed
broadband
electrodes
output

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying. / Kawanishi, Tetsuya; Sakamoto, Takahide; Izutsu, Masayuki.

In: Optics Express, Vol. 13, No. 20, 03.10.2005, p. 8038-8044.

Research output: Contribution to journalArticle

Kawanishi, Tetsuya ; Sakamoto, Takahide ; Izutsu, Masayuki. / All-optical modulation format conversion from frequency-shift-keying to phase-shift-keying. In: Optics Express. 2005 ; Vol. 13, No. 20. pp. 8038-8044.
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