Abstract

Fiber optic Fourier transform spectrometer(FTS) may find its applications in gas sensing, space astronomy, etc. because of its compactness, low cost, etc.. Similarly, Fiber optic double Fourier interferometer is very attractive for double Fourier interferometric imaging(DFII) with telescope array. In both fiber optic FTS and fiber optic DFII, all optical operations are carried out with guided optics(optical fiber and directional coupler). Beams are transported in fibers. Beam splitting and combining are performed by directional couplers. Optical path delay is generated by stretching fibers(or, probably with combination with optical switchs) which are usually wrapped onto piezoelectric(p/z) tubes driven by high voltage.

© 1995 Optical Society of America