We report a spatial heterodyne Fourier-transform spectrometer implemented with an array of optical fiber interferometers. This configuration generates a wavelength-dependent stationary interferogram from which the input spectrum is retrieved in a single shot without scanning elements. Furthermore, fabrication and experimental deviations from the ideal behavior of the device are corrected by spectral inversion algorithms. The spectral resolution of our system can be readily scaled up by incorporating longer optical fiber delays, providing a pathway toward surpassing current spectroscopy resolution limits.
© 2013 Optical Society of America
Original Manuscript: March 22, 2013
Revised Manuscript: May 14, 2013
Manuscript Accepted: May 24, 2013
Published: June 25, 2013
Aitor V. Velasco, Pavel Cheben, Mirosław Florjańczyk, Jens H. Schmid, Przemek J. Bock, Jean Lapointe, André Delâge, Siegfried Janz, Martin Vachon, María L. Calvo, Dan-Xia Xu, and Svatopluk Civiš, "Optical fiber interferometer array for scanless Fourier-transform spectroscopy," Opt. Lett. 38, 2262-2264 (2013)