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Dive into the research topics where Robert Keys is active.

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Featured researches published by Robert Keys.


Optical Amplifiers and Their Applications (1997), paper FAW22 | 1997

980 nm band pump wavelength tuning of the gain spectrum of EDFAs

Kevin Wallace Bennett; Fiona Davis; Paul A. Jakobson; Nigel Edward Jolley; Robert Keys; Mark Andrew Newhouse; Shou-jong Sheih; Michael J. Yadlowsky

We report 2-3 dB changes in the gain spectra of EDFAs in response to nanometer changes in pump wavelength within the 980 nm pump band. The pump wavelength induced gain changes are characterized and several techniques are presented to use them to improve the gain flatness of EDFAs.


Archive | 2000

Highly scalable modular optical amplifier based subsystem

Loren S. Kanata Berg; Mark R. Hinds; Robert Keys; Gregory D. May; Alan Glen Solheim; Stephane St-Laurent


Archive | 2002

Link discovery, verification, and failure isolation in an optical communication system

Ornan A. Gerstal; Humair Raza; Rajiv Ramaswami; Babu O. Narayanan; Robert R. Ward; Robert Keys; David W. Park; Vasant Sahay; Osama Aboul-magd; Frederic Simard


Archive | 1998

Fast loss of signal (LOS) detection for bidirectional optical amplifiers

Mathieu Dutrisac; Richard A. Habel; Robert Keys; Franz Mok; Jeffrey Weslowski


Archive | 1998

Circuit and channel assignment plan for optical transmissions

Fiona Davies; Nigel Edward Jolley; Kevan P Jones; Robert Keys; Maurice O'Sullivan


Archive | 2002

A modular bidirectional optical amplification system

Loren S. Kanata Berg; Mark R. Hinds; Robert Keys; Gregory D. May; Alan Glen Solheim; Stephane St-Laurent


Archive | 2001

Measuring optical signal power in an optical system

Gregory D. May; Robert Keys; David W. Park; Douglas Eccleston


Archive | 2000

Method and apparatus for the measurement of erbium optical amplifiers

Mark E Bray; Ross T Elliott; Kevan P Jones; Robert Keys


Optics & Photonics News | 1998

980-nm band pump wavelength tuning of the gain spectrum of EDFAs

Kevin Wallace Bennett; Paul A. Jakobson; Mark Andrew Newhouse; Shou-jong Sheih; Michael J. Yadlowsky; Fiona Davis; Nigel Edward Jolley; Robert Keys


Archive | 2010

Ghost Channel Management for PHB Mitigation

Denis Daniel Leclair; Sean D. L. McVeigh; Kevan P Jones; Jean V. E. Ouellet; Douglas J. Greenwood; John B. Mills; Robert Keys

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