Abstract: An aspect of the disclosure provides for an optical-phased array (OPA) comprising a star coupler coupled to a plurality of grating couplers, wherein the star coupler comprises multiple inputs and multiple outputs. In some embodiments, each output of the star coupler is coupled to a grating coupler of the plurality of grating couplers. In some embodiments, the star coupler is coupled to the plurality of grating couplers by a plurality of optical delay lines. In some embodiments each output of the star coupler is coupled to a grating coupler of the plurality of grating couplers via an optical delay line of the plurality of optical delay lines. In some embodiments, the OPA further includes an optical switch coupled to the multiple inputs of the star coupler, and at least one tunable laser. Another aspect of the disclosure provides a method for steering light using the OPA.

Abstract: The invention relates to a diffractive device for chemical and biological analysis based on structured receptors on waveguides, which comprises: a waveguide and a recognition element consisting of a grating with receptors arranged on the waveguide and are intended to interact with target compounds present in a sample; and a radiation source that emits an incident beam propagated through the waveguide, interacting with the recognition element and being diffracted according to Bragg's law, thereby generating a reflected beam and a transmitted beam, which are collected by optical analyzers that record parameters of the reflected beam and of the transmitted beam, enabling multiple analyses to be conducted in a simple, fast, 15 sensitive and quantitative manner, label-free and in real time.

Abstract: The invention relates to a diffractive device (18) for chemical and biological analysis based on structured receptors on waveguides, which comprises: a waveguide (1) and a recognition element (3) consisting of a grating with receptors (11) arranged on the waveguide (1) and are intended to interact with target compounds (12) present in a sample; and a radiation source (4) that emits an incident beam (5) propagated through the waveguide (1), interacting with the recognition element (3) and being diffracted according to Bragg's law, thereby generating a reflected beam (6) and a transmitted beam (7), which are collected by optical analysers (8, 17) that record parameters of the reflected beam (6) and of the transmitted beam (7), enabling multiple analyses to be conducted in a simple, fast, sensitive and quantitative manner, label-free and in real time.

Abstract: An aspect of the disclosure provides for an optical-phased array (OPA) comprising a star coupler coupled to a plurality of grating couplers, wherein the star coupler comprises multiple inputs and multiple outputs. In some embodiments, each output of the star coupler is coupled to a grating coupler of the plurality of grating couplers. In some embodiments, the star coupler is coupled to the plurality of grating couplers by a plurality of optical delay lines. In some embodiments each output of the star coupler is coupled to a grating coupler of the plurality of grating couplers via an optical delay line of the plurality of optical delay lines. In some embodiments, the OPA further includes an optical switch coupled to the multiple inputs of the star coupler, and at least one tunable laser. Another aspect of the disclosure provides a method for steering light using the OPA.