Patent ID: 7813603
Filing Date: 2010-10-12
Classification: G02B,H01S

Abstract:
1. An optical component having a longitudinal, optical axis, and a cross section perpendicular to the longitudinal axis, the optical component comprising: a. a first optical fiber comprising a first fiber end, a pump core with a first numerical aperture at said first fiber end, and a core region different from said pump core, said core region being adapted for propagating light at a signal wavelength λ b. at least one second optical fiber comprising a second fiber end, said at least one second optical fiber being arranged in relation to said pump core of said first optical fiber, wherein said at least one second optical fiber comprising a pump core with a second numerical aperture at its second fiber end that is smaller than the first numerical aperture; and c. a reflector element comprising an end-facet with a predetermined profile for reflecting light from said second fiber end into the pump core of said first optical fiber, wherein said predetermined profile comprises a curved section; wherein said pump core of said first and said at least one second optical fiber are adapted for propagating pump light at a pump wavelength λ