Abstract
We report 2/spl times/2 crosspoint switches, containing passive waveguides, MMI couplers, electro-absorption modulators and semiconductor optical amplifiers (SOA) integrated monolithically using the sputtered SiO/sub 2/ quantum well intermixing technique. The switches can be lossless due to the gain compensation of the incorporated SOAs, and have extinction ratios up to 26 dB.
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