title: Birefringent in-phase supermode operation of a multicore microstructured fiber laser.
abstract: We report the first observation of birefringent in-phase supermode operation of a phase-locked multicore fiber laser. The in-phase mode operation of our 12-core rectangular-array microstructured fiber laser was confirmed by the near-field distribution, the far-field diffraction pattern, and the optical spectrum. The birefringence of the in-phase mode in propagation constant Deltay was measured as ~ 4 x 10(-6) 1/mum. The break of the polarization degeneracy indicates the possibility of single polarization operation of phase-locked multicore fiber lasers and amplifiers.
authors: X
authors: X
authors: Zhu
authors: A
authors: A
authors: Schülzgen
authors: L
authors: L
authors: Li
authors: H
authors: H
authors: Li
authors: V L
authors: VL
authors: Temyanko
authors: J V
authors: JV
authors: Moloney
authors: N
authors: N
authors: Peyghambarian