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.

Date Published: 31 July 2009
PDF: 7 pages
Proc. SPIE 7505, Optical Data Storage 2009, 75050H (31 July 2009); doi: 10.1117/12.838489

Published in SPIE Proceedings Vol. 7505:
Optical Data Storage 2009