Title:
Optical Fiber Gratings With Azimuthal Refractive Index Perturbation And Devices For Tuning, Attenuating, Switching, And Modulating Optical Signals
Optical Fiber Gratings With Azimuthal Refractive Index Perturbation And Devices For Tuning, Attenuating, Switching, And Modulating Optical Signals
Files
Author(s)
Advisor(s)
Editor(s)
Collections
Supplementary to
Permanent Link
Abstract
The present invention relates to a type of optical fiber grating having an azimuthal refractive-index perturbation. The optical fiber includes a fiber grating that has a plurality of grating elements formed therein. At least one of the grating elements has a spatially varying index of refraction that varies azimuthally about the centerline of the optical fiber. The fiber grating acts as a band-stop optical spectral filter. In addition, since fiber-cladding modes are weakly-guided modes, their power can be easily dissipated by scattering, bending, stretching, and/or rotating the optical fiber. Multiple configurations of these gratings within an optical fiber are given. Devices are presented which can dynamically attenuate, tune, switch, or modulate the wavelength spectral characteristics of an optical signal.
Sponsor
Date Issued
9/6/2005
Extent
Resource Type
Text
Resource Subtype
Patent