Low-power integrated beam steering switch matrix platform
View Patent ↗Methods and systems are described for emission and/or sensing of optical signals. An example method may comprise supplying an optical signal an optical signal to a first waveguide extending in a first direction and supplying, based on controlling at least one of a first plurality of optical elements, the optical signal to at least one of a plurality of second waveguides extending in a second direction different from the first direction. The method may comprise supplying, based on controlling at least one of a second plurality of optical elements, the optical signal to at least one emitter. Each of the second plurality of optical elements may be separately selectable to control a corresponding emitter. The method may comprise causing, via the at least one emitter, emission of one or more optical signals.
1. A device comprising:
a first waveguide extending at least in part in a first direction;
a plurality of second waveguides optically coupled to the first waveguide and extending in a second direction different from the first direction;
a first plurality of optical elements optically configured to switch optical signals from the first waveguide to corresponding waveguides of the plurality of second waveguides;
a second plurality of optical elements optically coupled to corresponding waveguides of the plurality of second waveguides and configured to switch optical signals traversing the corresponding waveguides to emitters configured to emit received optical signals; and
one or more control elements configured to control the first plurality of optical elements and the second plurality of optical elements thereby causing selection of an individual optical element of the second plurality of optical elements to separably control one or more of emission or sensing from the selected optical element, wherein the one or more control elements comprise a first plurality of control switches configured to control activation of corresponding optical elements of the first plurality of optical elements.
2. The device of claim 1 , wherein the one or more control elements control beam steering of one or more beams formed based on the emitted optical signals.
3. The device of claim 1 , wherein the first plurality of optical elements comprises one or more of an array of optical elements or a matrix of optical elements.
4. The device of claim 1 , wherein at least some of the emitters are arranged in a two-dimensional grid pattern.
5. The device of claim 1 , wherein the first plurality of optical elements comprises a microring emitter, a microresonator emitter, a microresonator emitter having gratings on the circumference of the microresonator, a microresonator emitter coupled to an emitter, a micro-electromechanical systems optical switch, a phase change material optical routing switch, or an optical routing switch.
6. The device of claim 1 , wherein the second plurality of optical elements comprises one or more of an optical switch, an add-drop microresonator, a micro-electromechanical systems optical switch, a phase change material optical routing switch, or an optical routing switch.
7. The device of claim 1 , further comprising one or more lenses disposed adjacent the second plurality of optical elements and configured to direct the one or more emitted signals.
8. The device of claim 7 , wherein the one or more lenses comprises one or more of a single lens for all of the second plurality of optical elements, a metasurface lens, or a plurality of microlenses.
9. The device of claim 1 , further comprising an optical source configured to supply the optical signals to the first waveguide.
10. The device of claim 1 , further comprising a detector, wherein the second plurality of optical elements are configured to detect optical signals based on reflections of the emitted optical signals and supply, via corresponding waveguides of the plurality of second waveguides, the detected optical signals to the first waveguide, wherein the first waveguide is at least part of an optical path that supplies the detected optical signals to the detector.
11. The device of claim 1 , further comprising a plurality of detector elements separate from the second plurality of optical elements, the second plurality of detector elements being configured to detect optical signals based on reflections of the emitted optical signals.
12. The device of claim 1 , further comprising a third plurality of optical elements configured to detect optical signals based on reflections of the emitted optical signals and supply, via one or more waveguides, the detected optical signals to a detector.
13. The device of claim 1 , wherein the one or more control elements comprise a second plurality of control switches configured to control activation of individual optical elements of the second plurality of optical elements.
14. The device of claim 1 , wherein the second plurality of optical elements are individually controllable to steer optical signals without mechanical elements.