You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.
1 August 1990Dual-wavelenth passive homodyne detection unit for fiber-coupled white-light interferometers
This paper is devoted to the description of a prototype Emission/Detection Unit, the ACCORD® Module,
developed for the accurate demodulation of fiber optic sensors using spectral modulation encoding techniques. This
prototype contains a static polarimetric interferometer with 4 ports to provide the four phase signals needed by the passive
homodyne scheme, and uses a dual-wavelength arrangement to extend the measurement range by removing the 2ic
ambiguity in the phase determination. Resolution as high as A/40000 has been achieved with 1 Hz bandwith and Optical
Path Difference mismatch in a 20 microns range.
The alert did not successfully save. Please try again later.
Michel Lequime, Catherine Lecot, Hugues Giovannini, Serge J. Huard, "Dual-wavelenth passive homodyne detection unit for fiber-coupled white-light interferometers," Proc. SPIE 1267, Fiber Optic Sensors IV, (1 August 1990); https://doi.org/10.1117/12.20316