H - Electricity – 01 – S
Patent
H - Electricity
01
S
H01S 3/06 (2006.01) G02B 5/22 (2006.01) G02B 6/26 (2006.01) G02B 6/34 (2006.01) H01S 3/098 (2006.01) H01S 3/10 (2006.01)
Patent
CA 2056953
Abstract of the Disclosure The disclosed fiber optic filter structure includes an optical fiber having a single-mode core surrounded by cladding material, and at least one light-attenuating light path in the cladding material uniformly spaced from the single-mode core. The propagation constants of the single-mode core and the light path are different at wavelengths except for at least one wavelength .lambda.f. The spacing between the single-mode core and the light path are sufficiently small that light within a first band of wavelengths centered around .lambda.f couples between the single-mode core and the light path. At least a portion of the light within the first band of wavelengths is absorbed in the light path. In that embodiment in which the single-mode core is a fiber amplifier gain core, the filtering function of the light path modifies the fiber amplifier gain spectrum.
Hall Douglas Warren
Hawk Robert Martin
Corning Incorproated
Gowling Lafleur Henderson Llp
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