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Electrooptic polymeric digital optical switches (DOSs) with adiabatic couplers

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4 Author(s)
Yuan, Wei ; Dept. of Electr. Eng., Univ. of California, Los Angeles, CA, USA ; Seongku Kim ; Steier, William H. ; Fetterman, Harold R.

Electrooptic polymeric digital optical switches with an adiabatic coupler is proposed and demonstrated. The tip portion of the Y-branch is replaced by a full 1 × 2 adiabatic coupler. By having this design, the switching voltage can be lowered and the devices are easier to fabricate. The fabricated switches show a characteristic step-like response to the driving voltage. The switching voltage is 5.9 ∼ 6.4 V for dual-arm driving and the extinction ratio is higher than 20 dB. With the improvement of the bias voltage, this nonresonant optical switch design can be driven in a push-pull configuration without bias.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 12 )