MULTIPLE OPTICAL REFLECTIONS IN HYBRID AM 16-QAM MULTICHANNEL VIDEO LIGHTWAVE TRANSMISSION-SYSTEMS

被引：2
|
作者：
OVADIA, S
ESKILDSEN, L
LIN, CL
ANDERSON, WT
机构：
[1] Bellcore, Red Bank, NJ 07701, Newman Springs Road
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 1994年 / 6卷 / 10期
关键词：
D O I：
10.1109/68.329657
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The effects of multiple optical reflections on bit-error-rate characteristics using a directly-modulated DFB laser transmitter and an externally-modulated YAG laser transmitter are compared in hybrid multichannel AM/16-QAM video light-wave transmission systems. The measured 16-QAM bit-error-rate is increased from 10(-10) at reflections of -60 dB to 10(-1) at reflections of -20 dB for a 16-QAM modulation index of 0.22% using the DFB laser transmitter (AM modulation index of 3.3%) with an analog CNR of 52 dB. In contrast, the observed 16-QAM bit-error-rate is essentially unaffected by reflections using an externally-modulated YAG laser transmitter with the same AM modulation index and received optical power.
引用
收藏
页码：1261 / 1264
页数：4
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