Monolithically integrated 64‐channel WDM channel selector based on a novel configuration

In order to handle increased number of channels in WDM communication networks, a new configuration is proposed for a WDM channel selector. This selector consists of two arrayed waveguide gratings, a two-stage semiconductor amplifier gate array, and a multiple-input single-output coupler. Based on this configuration, a 64-channel WDM channel selector (the largest scale reported so far) is fabricated on an InP substrate by monolithic integration. The transmittance between fibers is measured for the fabricated chip. Lossless performance is confirmed at all channels. Also, the bit error rate is measured for a 10-Gbit/s NRZ input signal. Excellent characteristics are observed on all channels, including error-free operation and low penalties. © 2004 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 87(10): 46–53, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.10207

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