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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 26, Iss. 6 — Mar. 15, 2008
  • pp: 670–677

Analog and Digital Optical Pulse Synthesizers Using Arrayed-Waveguide Gratings for High-Speed Optical Signal Processing

Hiroyuki Tsuda, Yosuke Tanaka, Tatsutoshi Shioda, and Takashi Kurokawa

Journal of Lightwave Technology, Vol. 26, Issue 6, pp. 670-677 (2008)


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Abstract

In this paper, analog and digital optical pulse synthesizers using high-resolution arrayed-waveguide gratings (AWG) have been developed. The analog type of optical synthesizer consists of an AWG with an integrated 45$°, curved-surfaced mirror, a 4-f lens system, and an optically addressable spatial light modulator. The effective frequency resolution is 14.5 GHz. A dispersion compensation experiment is successfully carried out and a transform-limited short pulse has been obtained. This digital type of optical synthesizer comprises 30 frequency separated channels with a spacing of 12.5 GHz, where each channel includes an amplitude modulator and a phase modulator. The rectangular-shaped pulse is generated with this pulse synthesizer, together with a 12.5-GHz-spacing, optical frequency comb. The synthesizer can generate an optical pulse with any waveform. Moreover, using periodic characteristics of the pulse synthesizer, a 250-GHz repetition rate pulse train was generated, in combination with an ultrawideband, waveguide type of Fabry–Perot electrooptic modulator.

© 2008 IEEE

Citation
Hiroyuki Tsuda, Yosuke Tanaka, Tatsutoshi Shioda, and Takashi Kurokawa, "Analog and Digital Optical Pulse Synthesizers Using Arrayed-Waveguide Gratings for High-Speed Optical Signal Processing," J. Lightwave Technol. 26, 670-677 (2008)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-26-6-670

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