Optimal length for refractive index sensors

Details Optimal length for refractive index sensors Optimal length for refractive index sensors

1992-08-04

1993-10-12

Evans, F. L.

Optics: measuring and testing

Refraction testing

Refractive rod engages specimen

385 12, 385123, G01N 2141, G02B 616

Patent

active

052530370

ABSTRACT:
In a refractive index type optical sensor having a thin film metal clad on a waveguide to control leakage of light as a function of refractive index, light leakage occurs in the region where a discontinuity in refractive index occurs. A discontinuous clad with short, closely spaced segments maximizes light leakage and sensitivity over the length of the sensing region. Multiple sensing regions can be formed on a single waveguide.

REFERENCES:
patent: 4929049 (1990-05-01), Le Goullon et al.
patent: 5026139 (1991-06-01), Klainer et al.
patent: 5165005 (1992-11-01), Klainer et al.

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