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Group delay reference artifact based on molecular gas absorption

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4 Author(s)
A. Motamedi ; Agilent Labs., Palo Alto, CA, USA ; B. Szafraniec ; P. Robrish ; D. M. Baney

We propose a novel group delay reference for optical communication systems based on a molecular gas cell absorption characteristic. A 1.53 /spl mu/m C/sub 2/H/sub 2/ acetylene gas absorption cell commonly used as a wavelength reference is shown to have an important dispersive nature that forms the basis of a novel group delay reference. Group delay measurements are compared to theoretical predictions based on the amplitude response of the molecular gas cell. The formulated analytical approach is applicable to an arbitrary absorption spectra described by a Lorentzian function.

Published in:

Optical Fiber Communication Conference and Exhibit, 2001. OFC 2001  (Volume:4 )

Date of Conference:

17-22 March 2001