Comparison of Cross-Talks between Phase Encoding and Amplitude Encoding in Phase Change Rewritable Optical Discs
Baoxi Xu, Chong Tow Chong, Wilson Wang · Japanese Journal of Applied Physics · 1999
The cross-talk characteristics in the case of phase encoding and amplitude encoding are studied for phase change rewritable optical media for different track pitches and different mark lengths on adjacent tracks. The results show that the cross-talk ratio in the case of phase encoding is larger and that the depth tolerance of the groove is smaller than those in the case of amplitude encoding. Although the use of phase encoding can result in an increase of the linear recording density, in the case of track density, the increase is far less than that reached using amplitude encoding.