초록 ▼

A polarization of a light signal is modulated to provide polarization tracking in a wireless optical communication system. The light signal having the modulated polarization, such as a sinusoidally varying polarization, is transmitted from an optical transmitter having polarization-maintaining fiber

A polarization of a light signal is modulated to provide polarization tracking in a wireless optical communication system. The light signal having the modulated polarization, such as a sinusoidally varying polarization, is transmitted from an optical transmitter having polarization-maintaining fiber. The light signal having the modulated polarization is received at an optical receiver. A portion of the light signal is directed to an analyzer that detects the modulated polarization and generates an amplitude-modulated light signal corresponding to the modulated polarization. The amplitude-modulated light signal is directed to a tracking detector, such as a quad cell detector, that generates an amplitude-modulated electronic signal corresponding to the amplitude-modulated light signal. The amplitude-modulated electronic signal can be subsequently used to control or perform tracking of the optical receiver. Such tracking can include adjustment of an orientation of the optical receiver with respect to the light signal received from the transmitter.

대표청구항 ▼

1. A method, comprising:modulating a polarization of a light signal; transmitting the light signal having the modulated polarization through free space; receiving the light signal having the modulated polarization; and generating an amplitude-modulated light signal based on the modulated polarizatio

1. A method, comprising:modulating a polarization of a light signal; transmitting the light signal having the modulated polarization through free space; receiving the light signal having the modulated polarization; and generating an amplitude-modulated light signal based on the modulated polarization and using the amplitude-modulated light signal to perform tracking of an orientation of a receiver component with respect to the received light signal.