Title :
Novel approaches to optical reflectometry
Author :
Newton, Steven A.
Author_Institution :
Hewlett-Packard Lab., Palo Alto, CA, USA
Abstract :
The author reviews the fundamentals of optical reflectometry, including the standard optical time-domain reflectometry (OTDR) measurement. Some novel reflectometry schemes are described, including a spread-spectrum approach to long-range OTDR, as well as new optical frequency-domain reflectometry (OFDR) techniques that have proven useful for high-resolution measurements. These novel reflectometry techniques are suitable for testing both fiber links and small components. The spread-spectrum technique allows improved dynamic range without sacrificing resolution. High-speed modulators and detectors now allow the extension of OFDR techniques to high frequencies. Resulting measurements show a large dynamic range and resolution better than 4 mm
Keywords :
optical fibres; optical links; optical testing; time-domain reflectometry; dynamic range; frequency-domain reflectometry; high speed modulators; high-resolution measurements; optical fibre links; optical reflectometry; optical testing; optical time-domain reflectometry; spread-spectrum; Detectors; Dynamic range; Frequency measurement; High speed optical techniques; Measurement standards; Optical fiber testing; Optical modulation; Reflectometry; Spread spectrum communication; Time domain analysis;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1990. IMTC-90. Conference Record., 7th IEEE
Conference_Location :
San Jose, CA
DOI :
10.1109/IMTC.1990.66032
