Title :
Novel Optical Coupling Technique for Enhancing the Performance of Integrated 8-Input/1-Output SOA Gate-Switch Module
Author :
Nakagawa, Goji ; Kai, Yutaka ; Yoshida, Setsuo ; Aoki, Yasuhiko ; Sone, Kyosuke ; Kinoshita, Susumu
Author_Institution :
Fujitsu Labs. Ltd., Kawasaki, Japan
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 (~ 3.1 dB), high channel crosstalk (~ - 50 dB), high extinction ratio (>81 dB), and high-speed switching (~ 2.5 ns), confirming that this module is applicable to MG-SOA switching systems.
Keywords :
hermetic seals; integrated optics; lenses; optical communication equipment; optical crosstalk; optical switches; semiconductor optical amplifiers; channel crosstalk; extinction ratio; hermetic sealing; high-speed switching; integrated SOA device; laser-welded joints; lenses; low-loss coupling; multigate semiconductor optical amplifier; optical coupling; optical gate-switch module; optical module; Lens; optical coupling; optical switch module; semiconductor optical amplifier;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2028246
