1
Nigel Edward Jolley, Fiona Davis, Richard Edward Epworth: Multistage optical amplifier with gain flattening. Nortel Networks, Lee Mann Smith McWilliams Sweeney & Ohlson, November 19, 2002: US06483632 (17 worldwide citation)

A variable gain optical amplifier, in which homogeneous gain broadening is dominant, has first and second fixed gain rare-earth doped optical waveguide amplifiers (


2
Kim Byron Roberts, Franz Li Hsien Mok, Richard Achile Habel, Nigel Edward Jolley: Optical amplifier gain control. Nortel Networks, Lee Mann Smith MacWilliams Sweeney & Ohlson, December 26, 2000: US06166850 (16 worldwide citation)

In an optical transmission system employing optical amplifiers a method of regulating the gain of such an amplifier uses a non-linear control system whose non-linearity of operation is provided at least in part by the enabling/disabling of a portion of the control system by the operation of a transi ...


3
Nigel Edward Jolley, Fiona Davis: Optically pumped optical waveguide amplifier. Northern Telecom, Lee Mann Smith McWilliams Sweeney and Ohlson, October 12, 1999: US05966481 (7 worldwide citation)

An optically amplifying waveguide guides both the LP.sub.01 and the LP.sub.02 mode. Its erbium distribution profile is preferentially matched with the modal field distribution of the LP.sub.02 mode. The waveguide is provided with long period perturbations of a pitch and strength that resonantly coup ...


4
Nigel Edward Jolley, Fiona Davis, Richard Edward Epworth: Optical amplifier modules. Nortel Networks, Barnes & Thornburg, May 17, 2005: US06894829 (3 worldwide citation)

A variable gain optical amplifier, in which homogeneous gain broadening is dominant, has first and second fixed gain rare-earth doped optical waveguide amplifiers (21, 23) optically in series together with an intervening variable attenuation optical attenuator (22). This arrangement circumvents the ...


5
Fiona Davies, Nigel Edward Jolley, Kevan Jones, Robert Keys, Maurice O&apos Sullivan: Circuit and channel assignment plan for optical transmissions. Nortel Networks, Barnes & Thornburg, June 15, 2004: US06751414 (3 worldwide citation)

To support interleaving of optical channels and to provide sufficient isolation between such interleaved channels, a circulator (


6
Nigel Edward Jolley, Fiona Davis, Richard Edward Epworth: Optical amplifier modules. William M Lee Jr, Lee Mann Smith McWilliams Sweeney & Ohlson, December 26, 2002: US20020196528-A1

A variable gain optical amplifier, in which homogeneous gain broadening is dominant, has first and second fixed gain rare-earth doped optical waveguide amplifiers (21, 23) optically in series together with an intervening variable attenuation optical attenuator (22). This arrangement circumvents the ...