Abstract
The present invention relates to an all-optical sensor utilizing effective index modulation of a waveguide and detection of a wavelength shift of reflected light and a force sensing system accommodating said optical sensor. One embodiment of the invention relates to a sensor system comprising at least one multimode light source, one or more optical sensors comprising a multimode sensor optical waveguide accommodating a distributed Bragg reflector, at least one transmitting optical waveguide for guiding light from said at least one light source to said one or more multimode sensor optical waveguides, a detector for measuring light reflected from said Bragg reflector in said one or more multimode sensor optical waveguides, and a data processor adapted for analyzing variations in the Bragg wavelength of at least one higher order mode of the reflected light.
Original language | English |
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IPC | G01L1/24; G01L11/02 |
Patent number | WO2013182643A1 |
Filing date | 12/12/2013 |
Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
Publication status | Published - 2013 |