Large-Scale and Fast Optical Circuit Switch Employing Coherent Detection Enabled with Hitless Cascaded-Silicon-Ring-Filter for Local Oscillator (LO) Wavelength Extraction from Laser Bank

Ryosuke Matsumoto; Ryotaro Konoike; Hiroyuki Matsuura; Keijiro Suzuki; Takashi Inoue; Kazuhiro Ikeda; Shu Namiki; Ken-ichi Sato

European Conference on Optical Communication (ECOC) 2022
Technical Digest Series (Optica Publishing Group, 2022),
paper Tu1F.5

Large-Scale and Fast Optical Circuit Switch Employing Coherent Detection Enabled with Hitless Cascaded-Silicon-Ring-Filter for Local Oscillator (LO) Wavelength Extraction from Laser Bank

Ryosuke Matsumoto, Ryotaro Konoike, Hiroyuki Matsuura, Keijiro Suzuki, Takashi Inoue, Kazuhiro Ikeda, Shu Namiki, and Ken-ichi Sato

European Conference and Exhibition on Optical Communication 2022

Basel Switzerland
18–22 September 2022
ISBN: 978-1-957171-15-9

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Co-Packaging and Large Photonic Circuits (Tu1F)

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R. Matsumoto, R. Konoike, H. Matsuura, K. Suzuki, T. Inoue, K. Ikeda, S. Namiki, and K. Sato, "Large-Scale and Fast Optical Circuit Switch Employing Coherent Detection Enabled with Hitless Cascaded-Silicon-Ring-Filter for Local Oscillator (LO) Wavelength Extraction from Laser Bank," in European Conference on Optical Communication (ECOC) 2022, J. Leuthold, C. Harder, B. Offrein, and H. Limberger, eds., Technical Digest Series (Optica Publishing Group, 2022), paper Tu1F.5.

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Abstract

We demonstrate a 1,856 × 1,856 optical circuit switch utilizing C-band tuneable local oscillators (LOs) for coherent detection. Hitless and fast (<14.8 μs) LO wavelength tuning is realized using a newly fabricated 8-cascaded silicon ring filter having wide free spectrum range (FSR) of >35 nm.

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