Simplified WDM fused fiber coupler design

Details Simplified WDM fused fiber coupler design Simplified WDM fused fiber coupler design

1991-05-22

1992-09-22

Ullah, Akm E.

Optical waveguides

With optical coupler

Particular coupling structure

G02B 600, G02B 636

Patent

active

051504391

ABSTRACT:
A two-channel optical fiber fused coupler comprising two optical fibers, each with a core and cladding, fused together at a narrow tapered waist. The first channel is at a wavelength of .lambda..sub.1 and the second channel is at a wavelength of .lambda..sub.2 where .lambda..sub.2 is longer than .lambda..sub.1. The coupler is fabricated to have a characteristic wavelength .lambda..sub.0 such that for wavelengths .lambda..sub.2 longer than .lambda..sub.0 coupling occurs and for wavelenghts .lambda..sub.1 shorter that .lambda..sub.0 the light at .lambda..sub.1 is core guided throughout the coupler and thus does not couple across.

REFERENCES:
patent: 4723824 (1988-02-01), Shaw et al.
patent: 4738511 (1988-04-01), Fling
patent: 4755037 (1988-07-01), Bjornlie et al.
patent: 4772085 (1988-09-01), Moore et al.
patent: 4779945 (1988-10-01), Hill et al.
patent: 4786130 (1988-11-01), Georgiou et al.

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