Optical fiber for frequency conversion

Details Optical fiber for frequency conversion Optical fiber for frequency conversion

1990-03-12

1992-04-21

Lee, John D.

Optical: systems and elements

Optical frequency converter

Harmonic generator

359328, 359332, 385122, 385124, G02B 616, G02F 137

Patent

active

051061767

ABSTRACT:
An optical fiber for frequency conversion, has an annular index profile structure for obtaining zero order phase matching and optimum overlap between the fibers's resonant propagation modes, one propagating the wave w and the other the wave kw where 2.ltoreq.k.ltoreq.4 for at least one wavelength lying in the range 0.4 .mu.m to 2.6 .mu.m, with the index step .delta.n in the ring lying in the range 2.times.10.sup.-2 and 5.times.10.sup.-2, the inside radius r.sub.i of the ring lying in the range 0.5 .mu.m to 1.5 .mu.m, and the outside radius r.sub.e of the ring lying in the range 2 .mu.m to 3.5 .mu.m.

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Electronics Letters, vol. 24, No. 14, Jul. 7, 1988, pp. 894-895, M. E. Fermann et al. "Frequency-Doubling by Modal Phase Matching in Poled Optical Fibers".
Electronics Letters, vol. 23, No. 7, Mar. 26, 1987, pp. 322-324, M. C. Farries et al. "Second-Harmonic Generation in an Optical Fiber by Self-Written X.sup.(2) Grating".
Applied Physics Letters, vol. 39, No. 6, Sep. 81, pp. 466-468, N.Y. USA; Y. Sasaki et al., "Phase-Matched Sum-Frequency Light Generation".
Optics Letters, vol. 13, No. 9, Sep. 88, pp. 773-775; M. A. Saifi et al. Second-Harmonic Generation in SIngle-Mode and Multimode Fibers.
Patent Abstracts of Japan, vol. 7, No. 67, Mar. 19, 83, p. 184, 1212. Nippon Denshin (#57-211125).

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