Method and apparatus for optical communication using a retro-reflector

摘要

An optical communication apparatus includes an optical signal transmitting unit to output an optical signal; an optical signal receiving unit to receive an optical signal; a retro-reflector to retro-reflect the received optical signal in a direction opposite to an incident angle of the received optical signal; and a control unit to direct the retro-reflector to receive the optical signal and to retro-reflect a response signal, which includes the received optical signal and data to be transmitted, in response to the received optical signal.

主权项

1. A method of optical communication by a second optical communication apparatus, comprising:
receiving a first optical signal transmitted from a first optical communication apparatus, wherein the first optical signal is for a communication setting signal; retro-reflecting, by a retro-reflector, a response signal including the received first optical signal to the first optical communication apparatus when the first optical communication apparatus has a reception sensitivity below a preset level; determining, based on a direction of the retro-reflected first optical signal, a communication direction with the first optical communication apparatus; and transmitting a second optical signal including data to be transmitted in the determined communication direction.