M
Masayuki Okuno
Researcher at Nippon Telegraph and Telephone
Publications - 149
Citations - 2244
Masayuki Okuno is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Optical switch & Waveguide (optics). The author has an hindex of 24, co-authored 149 publications receiving 2208 citations.
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Journal ArticleDOI
16-channel optical add/drop multiplexer consisting of arrayed-waveguide gratings and double-gate switches
TL;DR: In this article, an optical add/drop multiplexer that enables full access to 16 individual wavelength channels has been fabricated on the planar lightwave circuit (PLC), which consists of four arrayed-waveguide gratings which are connected through 16 double-gate thermo-optic switches.
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Low loss and high extinction ratio strictly nonblocking 16/spl times/16 thermooptic matrix switch on 6-in wafer using silica-based planar lightwave circuit technology
TL;DR: In this article, a silica-based 16/spl times/16 strictly nonblocking thermooptic matrix switch with a low loss and a high extinction ratio was described, which employs a double Mach-Zehnder interferometer (MZI) switching unit and a matrix arrangement to reduce the total waveguide length.
Journal ArticleDOI
Low-loss and high-extinction-ratio silica-based strictly nonblocking 16/spl times/16 thermooptic matrix switch
TL;DR: In this article, a low-loss and high-extinction-ratio silica-based 16/spl times/16 thermooptic matrix switch is demonstrated, which employs a double Mach-Zehnder interferometer switching unit and a matrix arrangement which reduces the total waveguide length.
Journal ArticleDOI
Birefringence control of silica waveguides on Si and its application to a polarization-beam splitter/switch
TL;DR: In this article, a polarization-beam splitter/switch with a Mach-Zehnder interferometer configuration was fabricated using a silica-based planar lightwave circuit (PLC) on a silicon substrate.
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High-extinction ratio and low-loss silica-based 8/spl times/8 strictly nonblocking thermooptic matrix switch
TL;DR: In this paper, a silica-based 8/spl times/8 strictly nonblocking thermooptic matrix switch with a high extinction ratio and low loss was proposed, which achieved an average extinction ratio of 60.3 dB and an average insertion loss of 5.1 dB.