Share Email Print
cover

Proceedings Paper

Measurement of optical fiber length by the spectrum of intensity fluctuations using low-coherent light interference
Author(s): Van Hoi Pham; Roberto Coisson; Duc Thinh Vu; Huy Bui; Paolo Podini
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Amplitude-division two-beam interferometry performed with temporally incoherent light (such as white light, i.e. the path difference is larger than the coherence length) is used to multiplex signals, and applied to the multiplexing of sensors, and for distance measurements. The detection is based on the use of a receiving interferometer tuned to approximately the same path difference. An alternative way to detect path differences in Low Coherent Intensity, by analyzing the output intensity fluctuations with a radio frequency spectrum analyzer (RFSA) is proposed. This is suitable for very long path differences. Experiments have been performed with different lengths from meter to some kilometer of single-mode optical fiber, in a Mach-Zehnder and Michelson configuration.

Paper Details

Date Published: 8 May 2001
PDF: 4 pages
Proc. SPIE 4416, Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), (8 May 2001); doi: 10.1117/12.427033
Show Author Affiliations
Van Hoi Pham, Vietnam National Ctr. for Science and Technology (Vietnam)
Roberto Coisson, Univ. degli Studi di Parma (Italy)
Duc Thinh Vu, Vietnam National Ctr. for Science and Technology (Vietnam)
Huy Bui, Vietnam National Ctr. for Science and Technology (Vietnam)
Paolo Podini, Univ. degli Studi di Parma (Italy)


Published in SPIE Proceedings Vol. 4416:
Optical Engineering for Sensing and Nanotechnology (ICOSN 2001)
Koichi Iwata, Editor(s)

© SPIE. Terms of Use
Back to Top