Optical fiber with variable absorption
AssigneeLumentum Operations LLC
InventorsVincent Petit, Martin H. Muendel
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Abstract
An optical fiber may comprise a core doped with one or more active ions to guide signal light from an input end of the optical fiber to an output end of the optical fiber, a cladding surrounding the core to guide pump light from the input end of the optical fiber to the output end of the optical fiber, and one or more inserts formed in the cladding surrounding the core. The core may have a geometry (e.g., a cross-sectional size, a helical pitch, and/or the like) that varies along a longitudinal length of the optical fiber, which may cause an absorption of the pump light to be modulated along the longitudinal length of the optical fiber.
Claims21
An optical fiber, comprising:
- a core doped with one or more active ions to guide signal light from an input end of the optical fiber to an output end of the optical fiber;
- a cladding surrounding the core to guide pump light from the input end of the optical fiber to the output end of the optical fiber;
- and
- one or more inserts formed in the cladding surrounding the core,
- wherein the core has a geometry that varies along a longitudinal length of the optical fiber, and
- wherein the geometry of the core is varied along the longitudinal length of the optical fiber to cause an absorption of the pump light to be modulated along the longitudinal length of the optical fiber,
- wherein the geometry of the core that varies along the longitudinal length of the optical fiber comprises a cross-sectional size of the core that increases from the input end to the output end of the optical fiber.
Dependencies are inferred from the claim text.