Ultra-high-extinction-ratio 2 × 2 silicon optical switch with variable splitter | Zendy

Keijiro Suzuki | Zendy; Guangwei Cong | Zendy; Ken Tanizawa | Zendy; Sang-Hun Kim | Zendy; Kazuhiro Ikeda | Zendy; Shu Namiki | Zendy; Hitoshi Kawashima | Zendy

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Ultra-high-extinction-ratio 2 × 2 silicon optical switch with variable splitter

Author(s) -

Keijiro Suzuki,

Guangwei Cong,

Ken Tanizawa,

Sang-Hun Kim,

Kazuhiro Ikeda,

Shu Namiki,

Hitoshi Kawashima

Publication year - 2015

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.009086

Subject(s) - extinction ratio , optics , fabrication , extinction (optical mineralogy) , materials science , splitter , optical switch , beam splitter , optoelectronics , waveguide , insertion loss , physics , laser , wavelength , medicine , alternative medicine , pathology

We demonstrate a record-high extinction-ratio of 50.4 dB in a 2 × 2 silicon Mach-Zehnder switch equipped with a variable splitter as the front 3-dB splitter. The variable splitter is adjusted to compensate for the splitting-ratio mismatch between the front and rear 3-dB splitters. The high extinction ratio does not rely on waveguide crossings and meets a strong demand in applications to multiport circuit switches. Large fabrication tolerance will make the high extinction ratio compatible with a volume production with standard complementary metal-oxide semiconductor fabrication facilities.

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