Optical: systems and elements – Optical amplifier – Correction of deleterious effects
Reexamination Certificate
2006-06-22
2009-10-13
Bolda, Eric (Department: 3663)
Optical: systems and elements
Optical amplifier
Correction of deleterious effects
C359S337400
Reexamination Certificate
active
07602545
ABSTRACT:
Gain-flattening components for compensation of at least a portion of the spectral gain profile of an optical amplifier comprises an optical substrate having at least a first gain-flattening filter disposed on a first surface of the optical substrate and a second gain-flattening filter disposed on a second surface of the optical substrate. The first gain-flattening filter has a transmission curve with a spectral loss profile for optical signals in the optical wavelength range, and has a net insertion loss error function relative to the spectral gain profile of an optical amplifier. The spectral loss profile of the second gain-flattening filter corresponds to the net insertion error function of the first gain-flattening filter. Gain-flattening optical amplifiers comprise one or more such gain-flattening components and at least one optical signal amplifier. Methods of producing gain-flattening components comprise:designing a primary gain-flattening filter to flatten the spectral gain profile of an optical amplifier;disposing on a first surface of an optical substrate a first gain-flattening filter according to the design of the primary gain-flattening filter;determining the error function of the coated substrate;designing a tweaker filter with a spectral loss profile corresponding to the error function of the coated substrate; anddisposing on the second surface of the optical substrate a second filter according to the design of the tweaker filter.
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Fortenberry Rance M.
Sommer Rad
Banner & Witcoff , Ltd.
Bolda Eric
Bookham Technology plc
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