Abstract
We report on a tandem two-mode fiber interferometer with a multimode laser diode light source. An elliptical core two-mode fiber1 acts as a remote sensing interferometer, a second identical two-mode fiber acts as a receiving interferometer. Insensitive polarization-maintaining single-mode fibers are used for interconnections. Advantages of this remote fiber sensor include simplicity, low sensitivity with respect to optical feedback into the light source, and signal recovery by straightforward homodyne detection.
© 1992 Optical Society of America
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