CPC G01D 5/26 (2013.01) [G01D 5/268 (2013.01)] | 15 Claims |
1. A system, comprising:
an elongated optical waveguide having a lateral side and adapted to radiate light laterally from the lateral side;
at least one sensor system adapted to detect light intensity of the light radiated laterally from the lateral side of the elongated optical waveguide;
a grating arranged between the sensor system and the elongated optical waveguide;
wherein the grating includes (a) grating openings in an extension direction of the elongated optical waveguide, (b) grating openings that are spaced apart from one another at regular intervals, and/or (c) a first polarization filter adapted to polarize light emerging from the grating and being radiated in a direction of the sensor system, and has a single polarization direction;
wherein the sensor system includes a first sensor adapted to determine light intensity and a second sensor adapted to determine light intensity, a second polarization filter being arranged between the first sensor and the grating, a third polarization filter being arranged between the second sensor and the grating, a polarization direction of the second polarization filter having a non-zero angle of rotation with respect to the polarization direction of the third polarization filter and/or an angle of rotation of 90°;
wherein the sensor system includes a third sensor adapted to determine light intensity and to receive data for a contact-free data transmission; and
wherein no polarization filter is disposed between the optical waveguide and the third sensor.
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