Abstract

We developed 8-input/1-output (8:1) optical gate-switch module that is compact and reliable by proposing and developing a novel lens coupling scheme suitable for an 8:1 integrated SOA device for a multigate semiconductor optical amplifier (MG-SOA) switch system. We first designed special lenses that collect the tilted SOA beams and simultaneously magnify the pitch and beam size, and we fabricated a highly reliable optical module with hermetic sealing and laser-welded joints. The module exhibits low-loss coupling ($\sim$3.1 dB), high channel crosstalk ($\sim\!\!\!\!-$50dB), high extinction ratio ($ > $81 dB), and high-speed switching ($\sim$2.5 ns), confirming that this module is applicable to MG-SOA switching systems.

© 2009 IEEE

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