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A silicon-silica hybrid 1×8 optical phased-array switch is fabricated with a multi-chip integration technique. We achieved a high switching response of 81 μsec, a high extinction ratio of over 18 dB and a low insertion loss of 4.9–8.1 dB at a wavelength of 1.55 μm.
We describe an 8-channel switch with a low power of 0.7 mW/channel based on a silicon-silica hybrid structure. We improve the extinction ratio from 3 dB to > 15 dB by using a laser trimming.
We demonstrated an extremely low power consumption thermooptic switch using suspended ridge and silicon-silica hybrid waveguide structures. The switching power was successfully reduced to only 0.6 mW.
We have achieved a silica-based PLC thermooptic switch with a power consumption of only 30 mW without any deterioration in the optical properties by using a tapered narrow ridge structure. To reduce the power consumption further, we propose a novel structure, the suspended narrow ridge structure, which has the advantages of both the tapered narrow ridge structure and the already reported suspended-bridge...
We have developed the first silica-based PLC type 32 x 32 optical matrix switch. The switch is the largest scale waveguide type switch yet reported, which has excellent optical characteristics with an average insertion loss of 6.6 dB.
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