Analog and digital optical pulse synthesizers using arrayed-waveguide gratings for high-speed optical signal processing

Hiroyuki Tsuda, Yosuke Tanaka, Tatsutoshi Shioda, Takashi Kurokawa

Research output: Contribution to journalArticle

63 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)670-677
Number of pages8
JournalJournal of Lightwave Technology
Volume26
Issue number6
DOIs
Publication statusPublished - 2008 Mar 15

Fingerprint

Optical signal processing
Arrayed waveguide gratings
synthesizers
Modulators
optical communication
signal processing
Laser pulses
high speed
gratings
analogs
waveguides
pulses
modulators
Pulse repetition rate
Dispersion compensation
Electrooptical effects
Ultra-wideband (UWB)
Lenses
Mirrors
Waveguides

Keywords

  • Frequency synthesizers
  • Optical signal processing
  • Optical waveguide
  • Signal generators

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Analog and digital optical pulse synthesizers using arrayed-waveguide gratings for high-speed optical signal processing. / Tsuda, Hiroyuki; Tanaka, Yosuke; Shioda, Tatsutoshi; Kurokawa, Takashi.

In: Journal of Lightwave Technology, Vol. 26, No. 6, 15.03.2008, p. 670-677.

Research output: Contribution to journalArticle

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