NDLI: Incoherent Optical Frequency Domain Interferometry for Avionics

Content Provider	IEEE Xplore Digital Library
Author	Chryssis, A.N. Sahand, S. Dagenais, M.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD (Chryssis, A.N.; Sahand, S.; Dagenais, M.)
Abstract	We present a new approach to fault location in avionics fiber optic networks. A frequency domain reflectometry technique is introduced where the light from a transmitting laser is frequency modulated at a RF frequency and the reflected signal is heterodyne beaten with a portion of the transmitted signal on an optical detector. The detected beat frequency is proportional to the time-of-flight of the transmitted signal reflected from a fault down the fiber. Since the transmitting laser is operated CW and does not require high peak optical power, a significant advantage is obtained, compared to a time-domain reflectometry technique. This advantage becomes very significant in applications requiring built-in test, as for avionics applications, where one must use the existing transmitter circuit with a given power supply. Very low reflections are detected and an optical dynamic range of 73 dB is obtained, which can be further increased
Sponsorship	IEEE LEO
Starting Page	34
Ending Page	35
File Size	124381
Page Count	2
File Format	PDF
ISBN	1424404088
DOI	10.1109/AVFOP.2006.1707487
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-09-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical interferometry Frequency domain analysis Aerospace electronics Optical transmitters Optical mixing Optical modulation Reflectometry Fiber lasers RF signals Optical detectors
Content Type	Text
Resource Type	Article

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