"Photonic lantern" spectral filters in multi-core Fiber.
Fiber Bragg gratings are written across all 120 single-mode cores of a multi-core optical Fiber. The Fiber is interfaced to multimode ports by tapering it within a depressed-index glass jacket. The result is a compact multimode "photonic lantern" filter with astrophotonic applications. The tapered structure is also an effective mode scrambler.
Department of Physics, University of Bath, Claverton Down, Bath, BA2 7AY, UK. t.a.birks@bath.ac.uk
T A
TA
Birks
B J
BJ
Mangan
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A
Díez
J L
JL
Cruz
D F
DF
Murphy
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005374:Filtration / Q000295:instrumentation*; D055100:Optical Fibers