Abstract
The combined properties of phase conjugation and optical fibers offer a novel solution to some problems associated with laser phase locking. Multimode optical fibers provide a propagation path that is simple to align and relatively insensitive to environmental disturbances. Double phase conjugation compensates for modal dispersion, diffusion, and polarization scrambling and leads to mode-matched coupling between two multilongitudinal-mode helium-neon lasers. Phase locking and spectral line narrowing are reported.
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