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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 21, Iss. 11 — Nov. 1, 2003
  • pp: 2705–

Optical Carrier Supply Module Using Flattened Optical Multicarrier Generation Based On Sinusoidal Amplitude and Phase Hybrid Modulation

Masamichi Fujiwara, Mitsuhiro Teshima, Jun-ichi Kani, Hiro Suzuki, Noboru Takachio, and Katsumi Iwatsuki

Journal of Lightwave Technology, Vol. 21, Issue 11, pp. 2705- (2003)


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Abstract

This paper presents an optical carrier supply module (OCSM) that functions as a common multicarrier light source, a wavelength bank, for superdense wavelength-division multiplexing (SD-WDM) networks that utilize a large number of wavelengths with narrow channel spacing. A novel sideband generator based on a sinusoidal amplitude-phase hybrid modulation scheme is the key technique. The sideband generator generates nine flattened optical sidebands within 3 dB from one seed light source, and the input from wavelength-division multiplexing (WDM) seed carriers expands the number of generated sidebands. Scalability against the number of wavelengths is achieved by increasing the number of seed carriers used. The SD-WDM system employing OCSM reduces the number of laser diodes (LDs) and attendant wavelength monitoring/stabilization circuits. Multiple distributions to SD-WDM networks by splitting the OCSM output can promote this effect. We designed OCSM and experimentally investigated its performance pertaining to the electrical signal-to-noise ratio (SNR) of the OCSM output. The experimental results show the wavelength scalability to 1000 channels. We also developed an OCSM prototype that generated 12.5-GHz-spaced 256-channel WDM carriers. All the generated carriers exhibit the electrical SNR of more than 31.5 dB at 2.5 Gb/s and the power flatness of within 3 dB. The distribution over 100 SD-WDM networks is experimentally confirmed.

© 2003 IEEE

Citation
Masamichi Fujiwara, Mitsuhiro Teshima, Jun-ichi Kani, Hiro Suzuki, Noboru Takachio, and Katsumi Iwatsuki, "Optical Carrier Supply Module Using Flattened Optical Multicarrier Generation Based On Sinusoidal Amplitude and Phase Hybrid Modulation," J. Lightwave Technol. 21, 2705- (2003)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-21-11-2705


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