Title :
Lightwave scalar network analyzer employing optical heterodyne detection
Author :
Ishida, O. ; Toba, H. ; Kano, F.
Author_Institution :
NTT Transmission Syst. Labs., Kanagawa, Japan
fDate :
3/1/1990 12:00:00 AM
Abstract :
A new system for measuring the transmittance and reflectance characteristics of lightwave components is described. By employing frequency-tracked narrowband detection after optical heterodyning, a resolution bandwidth as narrow as 3 MHz with a dynamic range of 50 dB is achieved at a scanning speed of 1 GHz/s. The shot-noise-limited sensitivity of the system is also discussed.
Keywords :
network analysers; optical communication equipment; optical variables measurement; reflectometry; sensitivity; 3 MHz; dynamic range; frequency-tracked narrowband detection; lightwave components; lightwave scalar network analyser; optical heterodyne detection; reflectance characteristics; resolution bandwidth; scanning speed; shot-noise-limited sensitivity; transmittance characteristics;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900196
