Single-polarization optical fiber

Details Single-polarization optical fiber Single-polarization optical fiber

1988-12-02

1990-04-03

Lee, John D.

G02B 622

Patent

active

049135210

ABSTRACT:
A single-polarization optical fiber comprising a core, an inner cladding surrounding the core, an outer cladding surrounding the inner cladding and at least one pair of stress-applying portions each of which are partially extended into both the inner and outer claddings and which are symmetrical about the axis of the core and having thermal expansion coefficient higher than those of both the inner and outer claddings. When the refractive index of the stress-applying portions is lower than that of the core and higher than that of the inner cladding and further not higher than that of the outer cladding, one of orthogonally polarized mode is cutoff and only one polarized mode can propagate in the optical fiber.

REFERENCES:
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J. R. Simpson et al., "A Single-Polarization Fiber", JOURNAL OF LIGHTWAVE TECHNOLOGY, vol. LT-1, No. 2, June, 1983, pp. 370-374.
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