title: Acoustooptic characterization of a birefringent two-mode photonic crystal fiber.
abstract: The effect of axial variations in acoustooptic phase-mismatch coefficient of a two-mode birefringent photonic crystal fiber (PCF) is studied experimentally using two different methods. The first method is to determine axial non-uniformities directly from the transmission spectrum, while the second method is to use acoustic pulses. Both methods are seen to be in good agreement. It is found that axial non-uniformities increase the coupling bandwidth significantly as compared to an axially uniform fiber. The effect of acoustic birefringence is also considered.
authors.affiliation: Department of Electronics and Telecommunications, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway. Magnus-W.Haakestad@ffi.no
authors.forename: Magnus W
authors.initials: MW
authors.lastname: Haakestad
authors.forename: Helge E
authors.initials: HE
authors.lastname: Engan
mesh_terms: D000162:Acoustics; D001718:Birefringence; D003198:Computer Simulation; D003460:Crystallization / Q000379:methods; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008962:Models, Theoretical; D017785:Photons; D012031:Refractometry / Q000379:methods*