Demonstration of readout-signal quality improvement by homodyne detection

Hideharu Mikami; Takahiro Kurokawa; Koichi Watanabe; Harukazu Miyamoto

doi:10.1117/12.838489

31 July 2009 Demonstration of readout-signal quality improvement by homodyne detection

Hideharu Mikami, Takahiro Kurokawa, Koichi Watanabe, Harukazu Miyamoto

Proceedings Volume 7505, Optical Data Storage 2009; 75050H (2009) https://doi.org/10.1117/12.838489
Event: Optical Data Storage, 2009, Lake Buena Vista, Florida, United States

Abstract

We experimentally demonstrated improvement in optical disc readout signal quality by homodyne detection. We introduced an optical phase servo system as an alternative to the phase-diversity detection scheme for stabilization of the interference signal in homodyne detection, which resulted in further enhancement of readout signal quality. Experimental results indicate that at least a 16-layer recordable disc can be reliably read out with a jitter of less than 8% at a 1-mW read power by homodyne detection. The estimated amplification of signal amplitude was 13 times.

Citation Download Citation

Hideharu Mikami, Takahiro Kurokawa, Koichi Watanabe, and Harukazu Miyamoto "Demonstration of readout-signal quality improvement by homodyne detection", Proc. SPIE 7505, Optical Data Storage 2009, 75050H (31 July 2009); https://doi.org/10.1117/12.838489

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