Dennis, T.
and Williams, P.
(2002),
Relative Group Delay Measurements with 0.3 ps Resolution: Toward 40 Gbit/s Component Metrology, Tech. Dig. Optical Fiber Communication Conf. (OFC), Anaheim, CA, USA, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=30131
(Accessed October 7, 2025)
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Relative Group Delay Measurements with 0.3 ps Resolution: Toward 40 Gbit/s Component Metrology
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Abstract
We demonstrate relative group delay measurements on a molecular absorption line using a modulation phase shift technique yielding 0.3 ps resolution. Measured features as small as [approximately}1 ps in a hydrogen cyanide gas cell are shown to agree well with theory. This measurement and calibration technique shows promise for the metrology of emerging 40 Gbit/s optical communications components, where variations in group delay broaden optical data pulses causing transmission errors.Proceedings Title
Tech. Dig. Optical Fiber Communication Conf. (OFC)
Conference Dates
March 17-22, 2002
Conference Location
Anaheim, CA, USA
Pub Type
Conferences
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Keywords
optical communications, relative group delay, wavelength division multiplexing, WDM, calibration artifact, chromatic dispersion, hydrogen cyanide, Kramers-Kronig
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Created December 31, 2001, Updated October 12, 2021