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

Authors
OVADIA S ESKILDSEN L LIN CL ANDERSON WT
Citation
S. Ovadia et al., MULTIPLE OPTICAL REFLECTIONS IN HYBRID AM 16-QAM MULTICHANNEL VIDEO LIGHTWAVE TRANSMISSION-SYSTEMS, IEEE photonics technology letters, 6(10), 1994, pp. 1261-1264
Citations number
9
Categorie Soggetti
Optics,"Physics, Applied
Journal title
IEEE photonics technology letters → ACNP
ISSN journal
10411135
Volume
6
Issue
10
Year of publication
1994
Pages
1261 - 1264
Database
ISI
SICI code
1041-1135(1994)6:10<1261:MORIHA>2.0.ZU;2-R
Abstract
The effects of multiple optical reflections on bit-error-rate characte ristics using a directly-modulated DFB laser transmitter and an extern ally-modulated YAG laser transmitter are compared in hybrid multichann el AM/16-QAM video light-wave transmission systems. The measured 16-QA M 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 a n analog CNR of 52 dB. In contrast, the observed 16-QAM bit-error-rate is essentially unaffected by reflections using an externally-modulate d YAG laser transmitter with the same AM modulation index and received optical power.