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Extinction ratio compensation by free carrier injection for a MOS-capacitor microring optical modulator subjected to temperature drifting

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3 Author(s)
Chih T'sung Shih ; Institute of Photonics Technologies, National Tsing Hua University, 101, Sec. 2, Kuang-Fu Rd., Hsinchu, Taiwan 30013, China ; Zhi Wei Zeng ; Shiuh Chao

We have analyzed the temperature stability of a MOS-capacitor microring optical modulator that was designed for critical coupling. We found that free carrier injection through DC bias control can compensate the extinction ratio (ER) drop that was caused by temperature drifting. 0.22degC temperature drifting would drop the ER to 5 dB without DC bias and 8.7 V DC bias could extend the 5 dB limit to 1.86degC temperature drifting.

Published in:

Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on

Date of Conference:

30-3 Aug. 2009