Low Power MEMS Retroreflectors for Optical Communications

This proposal describes a new communication device that can provide information from remote sensors through modulated retro-reflection using an active optical mirror. Through the integration of optical micro-electromechanical (MEMS) devices, high speed, low power electronics, and high precision corner cubes the project team will be able to demonstrate a modulating retro-reflector that can transmit data at 100kHz over a 1km link, while being no larger than 50cm3 and consuming no more than 50mW power. A key component of this project will be the ability to make this modulating retro-reflector for a cost of $50 in high volume. The implementation of batch foundry micromachining for the MEMS, the use of commercial off the shelf electronics, and glass molding manufacturing of the corner cube will allow this. Details of how this will be achieved are discussed in this proposal.