Free-space optically accessed acoustically modulated retro-reflector arrays

摘要

Systems and techniques are provided for transmitting a light towards a plurality of acousto-optic retro reflectors, arranged as an array, that are configured to physically react to an acoustic signal. The physical reaction modulates the transmitted light which is reflected back towards a light detector and analyzed. The analysis may include detecting an acoustic signal source location and/or reconstructing the acoustic signal. A light scanner may be configured to transmit the light towards the plurality of acousto-optic retro reflectors in a predetermined, continuance, or dynamically determined sequence.

主权项

1. A system comprising:
a plurality of acousto-optic retro reflectors, wherein each of the acousto-optic retro reflectors is configured to physically react in response to an acoustic signal; a light scanner configured to sequentially transmit a first light signal towards each individual acousto-optic retro reflector in the plurality of acousto-optic retro reflectors; a light detector configured to receive a second light signal emitted by the light scanner, wherein the second light signal is reflected by the plurality of acousto-optic retro reflectors; and a processor configured to determine at least one property of the acoustic signal based upon the second light signal received by the light detector.