A technique for multiplexing 3x3-coupler terminated interferometric fiber-optic sensors
Reid, Gregory John.
Brown, David A.
Powers, John P.
MetadataShow full item record
This thesis investigates the multiplexing of Mach-Zehnder type 3x3 terminated fiber-optic sensors demodulated by either 'quadrature'or'symmetric' methods using intensity modulation of the source. 3x3-couplers produce signals that permit unmodulated passive demodulation of interferometric signals. The theory is described and the results of a 2xl element array optical demonstration are presented. Possible architectures using this demultiplexing technique are presented for several applications with different return line requirements. The technique was successfully demonstrated and warrants further investigation to increase the number of sensors and reduce the number of return lines for specific applications. The multiplexing technique presents the opportunity for possible cost savings over other phase generated carrier techniques, which require wavelength modulation of the source, and significant optical path differences in the interferometers, and are therefore constrained to presently very expensive sources. The technique presented uses compatible low coherent laser sources such as Compact Disc quality (830 nm) devices.
Approved for public release; distribution is unlimited.
Showing items related by title, author, creator and subject.
A study of the diffraction behavior and resolution criteria for pattern recognition for a proposed multiplexed imaging technique Musselman, Brian Jay (Monterey, California. Naval Postgraduate School, 1991-09);This project quantifies several aspects of a new multiplexed imaging technique proposed by D. S. Davis. The novel approach of this technique involved the use of encoding masks derived from a basin set of two-dimensional ...
Lohse, Hans Jurgen (Monterey, California. U.S. Naval Postgraduate School, 1968-12);Existing realization procedures for a fundamental loop or cut set matrix are reviewed, compared, and classified broadly on the basis of their underlying approach. A new combinatorial synthesis technique is presented ...
Segkos, Michail (Monterey California. Naval Postgraduate School, 2004-06);OFDM systems have experienced increased attention in recent years and have found applications in a number of diverse areas including telephone-line based ADSL links, digital audio and video broadcasting systems, and wireless ...