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Fabrication of 10-Channel Polymer Thermo-Optic Digital Optical Switch Array

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9 Author(s)
Young-Tak Han ; Opt. Switching Technol. Team, Electron. & Telecommun. Res. Inst., Daejeon, South Korea ; Jang-Uk Shin ; Sang-Ho Park ; Sang-Pil Han
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We present a 10-channel polymer thermo-optic digital optical switch (DOS) array with very low optical crosstalk. The 10-channel DOS array has a crosstalk-improved structure in which radiation-type attenuators are integrated in a series with a conventional 1 times 2 DOS. It is fabricated using a quartz substrate on which grid patterns for dispersion of stray light are formed to reduce the optical crosstalk. The measured crosstalk values are as low as -45 dB at a low electrical power of 50 mW. Insertion losses of less than 1.35 dB are achieved for all channels.

Published in:

Photonics Technology Letters, IEEE  (Volume:21 ,  Issue: 20 )