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Optica Publishing Group
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1992),
  • paper CWG61

Bloch-function analysis of resonant, distributed feedbacklike modes of arrays of antiguides

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Abstract

Resonant arrays of antiguides or resonant-optical-waveguide (ROW) arrays’ are the only passively phase-locked structures that have demonstrated diffraction-limited powers beyond 1 W. Since conventional coupled-mode theory2 is not applicable to arrays of antiguides, the only accurate analyses of leaky modes have employed exact theory3,4 or the Bloch-function approach5,6 The latter allows simple descriptions of leaky array modes, but not at resonance.4 Here we present, we believe for the first time, the modes of infinite-extent arrays at resonance. It is shown that resonant, in-phase modes of arrays of antiguides correspond to a second-order distributed feedback (DFB) structure with the radiation component along the longitudinal device axis.

© 1992 Optical Society of America

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