Abstract

A nonincremental interferometer for the absolute measurement of distances is presented. The measuring technique is based on both dispersive white-light (DWL) interferometry and frequency-modulated continuous-wave (FMCW) interferometry. The proposed configuration integrates both techniques in the same interferometer by use of a single laser diode. This solution enables the results from the coarse measurements from the FMCW interferometer to be combined with the fine readouts from the DWL interferometer. Preliminary experimental results confirm the capability of the system to combine the advantages of the two techniques.

© 1997 Optical Society of America

Optical frequency-modulated continuous-wave interferometers

Jesse Zheng
Appl. Opt. 45(12) 2723-2730 (2006)

All-fiber single-mode fiber frequency-modulated continuous-wave Sagnac gyroscope

Jesse Zheng
Opt. Lett. 30(1) 17-19 (2005)

Sinusoidal phase modulating absolute distance measurement interferometer combining frequency-sweeping and multi-wavelength interferometry

Shihua Zhang, Zheyi Xu, Benyong Chen, Liping Yan, and Jiandong Xie
Opt. Express 26(7) 9273-9284 (2018)

Simultaneous en-face imaging of two layers in the human retina by low-coherence reflectometry

Adrian Gh. Podoleanu, George M. Dobre, David J. Webb, and David A. Jackson
Opt. Lett. 22(13) 1039-1041 (1997)

Continuously tunable external-cavity diode laser with a double-grating arrangement

D. Wandt, M. Laschek, A. Tünnermann, and H. Welling
Opt. Lett. 22(6) 390-392 (1997)