Patent ID: 9294195
Filing Date: 2016-03-22
CPC Classification: H04B

Claim Text:
1. A method for saving energy in optical communication, applied to an optical communication device, wherein the optical communication device is coupled to an optical communication device at a peer end by using an optical fiber for optical communication, and the method comprises: setting a value of transmit optical power of the optical communication device to a first transmit optical power value to send first information to the optical communication device at the peer end by using an optical fiber; receiving second information that is returned by the optical communication device at the peer end after it receives the first information, wherein the second info′ illation comprises a receive optical power value of the optical communication device at the peer end when it receives the first information and a minimum receive optical power value that is recognizable for the optical communication device at the peer end, wherein the receive optical power value indicates an optical power of the first information when the first information arrives at the optical communication device at the peer end and the minimum receive optical power; and recognizing a minimum transmit power in which messages can be recognized by the optical communication device at the peer end according to a difference value between the first transmit optical power value and the receive optical power value plus the minimum receive optical power value, and adjusting transmit optical power accordingly.