10 February 2009 High speed OEIC with offset drift compensation for bluray disc system
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Abstract
In optical storage systems, the demand for fast optoelectronic integrated circuit (OEIC) is dramatically increasing especially for Bluray and HD DVD. A new OEIC for the blue spectral range, which is integrated monolithically using double epitaxial process that is modified BiCMOS process, is presented in this paper. Proposed OEIC is optimized with respect to bandwidth, sensitivity, and noise in order to achieve high S/N ratio. Interdigited photodiode achieves a responsivity of 0.31A/W at blue range corresponding to a quantum efficiency η of 95%, a frequency response of 450MHz and a rising/falling time of 0.578ns. 3dB frequency response of 204MHz and noise of -89.8dBm [1~120MHz @ RBW=30 KHz] are obtained for the fast channel amplifier. for fast tracking and focusing in a stable servo, offset drift at the amplifier output was compensated using voltage of bandgap reference.
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Joo yul Ko, Joo yul Ko, Kwanghyun Baek, Kwanghyun Baek, Suki Kim, Suki Kim, } "High speed OEIC with offset drift compensation for bluray disc system", Proc. SPIE 7219, Optoelectronic Integrated Circuits XI, 72190E (10 February 2009); doi: 10.1117/12.808441; https://doi.org/10.1117/12.808441
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