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A wide-angle X-junction polymeric thermooptic digital switch with low crosstalk

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3 Author(s)
Hau Ping Chan ; Dept. of Electron. Eng., City Univ. of Hong Kong, China ; Chow, C.K. ; Das, A.K.

We present our recent design of a wide-angle asymmetric X-junction for the implementation of a digital-optical switch. The simulated crosstalk in the OFF and ON states are -28 and -26 dB, respectively, at an X-branching angle of 1/spl deg/. Polymeric material benzocyclobutene was used to fabricate our design and its switching property was demonstrated using the thermooptic effect. The measured crosstalk is approximately -24 dB in both states with rise-time and fall-time 140 and 210 μs, respectively.

Published in:

Photonics Technology Letters, IEEE  (Volume:15 ,  Issue: 9 )