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Proceedings Paper

Optical spectrum control circuit with flat pass band characteristics using a high-resolution arrayed-waveguide grating
Author(s): Tatsuhiko Ikeda; Takayuki Mizuno; Hiroshi Takahashi; Hiroyuki Tsuda
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Paper Abstract

We have proposed an optical spectrum control circuit that realizes various kinds of signal processing in the optical domain using a silica-based planar lightwave circuit including arrayed-waveguide gratings. In order to obtain a flat transmission spectrum required for processing an optical signal that has a continuous spectrum, the number of the spectral output waveguides is set more than the number of waveguides in the waveguide array. In this study, we demonstrated a phase error compensation and obtained the flat transmission spectrum with ripples below 0.9 dB. We also demonstrated a tunable bandwidth operation as an example of the spectral amplitude control and a variable pulse delay operation as an example of the spectral phase control, respectively. In the tunable bandwidth operation, the passband characteristic of the minimum bandwidth of 5-GHz and tunable pass-band characteristics with different center frequencies with about 20-dB extinction ratio were obtained. In the variable delay operation, pulse delays equal to calculated values could be observed with some phase settings.

Paper Details

Date Published: 6 March 2013
PDF: 7 pages
Proc. SPIE 8627, Integrated Optics: Devices, Materials, and Technologies XVII, 862703 (6 March 2013); doi: 10.1117/12.2003113
Show Author Affiliations
Tatsuhiko Ikeda, Keio Univ. (Japan)
Takayuki Mizuno, NTT Corp. (Japan)
Hiroshi Takahashi, NTT Corp. (Japan)
Hiroyuki Tsuda, Keio Univ. (Japan)

Published in SPIE Proceedings Vol. 8627:
Integrated Optics: Devices, Materials, and Technologies XVII
Jean Emmanuel Broquin; Gualtiero Nunzi Conti, Editor(s)

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