Optics: measuring and testing – By particle light scattering – With photocell detection
Patent
1993-07-29
1995-02-28
Turner, Samuel A.
Optics: measuring and testing
By particle light scattering
With photocell detection
356361, 356128, G01B 902
Patent
active
053942396
ABSTRACT:
The invention concerns a sensor with integrated optics, to detect chemical substances, including a double spiral interlaced with wave guides and integrated on a substrate (13) receiving the signal of a light source (14) through a first optical component (15) able to separate into two portions the light intensity emitted by the source and sending output signals onto at least one detector (17) through a second optical component (16), the first of the two guides (11) being a reference guide isolated from the influence of the substance to be measured, and the second (12) being a measuring guide affected by the substance to be measured.
REFERENCES:
patent: 5289256 (1994-02-01), Gramling
Appl. Phys. Lett. 55(23) 4 Dec. 1989, "Efficient Coupling of a Semi Conductor Laser to an Optical Fiber by Means of a Tapered Waveguide on Silicon".
Commissariat a l''Energie Atomique
Turner Samuel A.
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