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Abstract-The first integrated InP-based polarization independent optical crossconnect is reported. The device can crossconnect signals at four wavelengths independently from two input fibers to two output fibers. Total on-chip loss is less then 16 dB. Device size is 7 2 9 mm 2 .

Abstract-An improved technology for realizing high-quality PHASAR's is reported, which is compatible with the integration of electrooptical switches for use in add-drop multiplexers. This technology is demonstrated in a 16-channel polarization independent low loss (<2.4 dB on-chip) PHASAR.

Abstract-Crosstalk performance of monolithically integrated multiwavelength optical cross-connects (OXC's) depends strongly on their architecture. In this paper, a semiquantitative analysis of crosstalk in 11 different architectures is presented. Two architectures are analyzed numerically in more detail and the results of the analysis show good agreement with previously reported experimental results.

Abstract-A compact low-loss polarization independent 8 8 PHASAR demultiplexer is presented. Device size is 0.93 0.75 mm 2 . On-chip losses are less than 4 dB and crosstalk is better than 20 dB. The device is suitable for integration with electro-optical switches for application in integrated optical crossconnects, add-drop multiplexers and multiwavelength lasers.