A novel interferometric technique which senses a change in spectrum without Fourier transformation is presented. It relies on measuring a feature of a short coherence interferogram, and compares favorably with FTS in complexity and sensitivity.
© 2007 Optical Society of America
(030.0030) Coherence and statistical optics : Coherence and statistical optics
(030.1640) Coherence and statistical optics : Coherence
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
R. C. Coutinho, D. R. Selviah, and H. D. Griffiths, " A High Sensitivity Interferometer-Based Spectrometer without a Fourier Transform," in Fourier Transform Spectroscopy/ Hyperspectral Imaging and Sounding of the Environment, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper FTuB3.