초록 ▼

Erbium doped fiber amplifiers (ERDAS) optically couple optical signals between free-space and fiber optic links of a terrestrial optical communication network. The optical gain of transmitting and receiving ERDAs is controlled to achieve good optical signal communication. Control occurs in response

Erbium doped fiber amplifiers (ERDAS) optically couple optical signals between free-space and fiber optic links of a terrestrial optical communication network. The optical gain of transmitting and receiving ERDAs is controlled to achieve good optical signal communication. Control occurs in response to signals received at the transmitting and receiving ends of the links. Control, status and management information may be communicated optically between link head stations. The physical position of transceivers at opposite ends of the link optical signal paths is also controlled.

대표청구항 ▼

1. A method of optical communication, comprising the steps of receiving an optical signal from a frees pace link with a receive element;directing the optical signal received from the free-space link by the receive element into a fiber amplifier that is optically coupled to the receive element; optic

1. A method of optical communication, comprising the steps of receiving an optical signal from a frees pace link with a receive element;directing the optical signal received from the free-space link by the receive element into a fiber amplifier that is optically coupled to the receive element; optically coupling the optical signal from the fiber amplifier into a fiber optic link of a terrestrial optical communication network; and controlling a power gain of the fiber amplifier in response to the optical signal.