초록 ▼

An infrared laser diode wireless local area network for communication between spatially dispersed terminals such as computers which may be located in a single room or in adjacent rooms. The lasers may be tuned to emit at varying frequencies for wavelength multiplexing, or a plurality of lasers each

An infrared laser diode wireless local area network for communication between spatially dispersed terminals such as computers which may be located in a single room or in adjacent rooms. The lasers may be tuned to emit at varying frequencies for wavelength multiplexing, or a plurality of lasers each having a different output frequency can be connected with each terminal. A receiver connected to each terminal may similarly detect only a single narrow waveband or may detect a plurality of such wavebands. A transceiver may be employed for signal transmission between separate rooms. High speed data modulation of the carrier waves is provided with MOPA or similar lasers, and broad angular dispersion of the output is achieved by such lasers along with dispersive lenses.

대표청구항 ▼

1. A network having a plurality of terminals in a building occupied by human beings, said network comprising:a first terminal having a transmitter and a receiver, a second terminal which is remotely located from the first terminal, said second terminal having a transmitter and a receiver, each trans

1. A network having a plurality of terminals in a building occupied by human beings, said network comprising:a first terminal having a transmitter and a receiver, a second terminal which is remotely located from the first terminal, said second terminal having a transmitter and a receiver, each transmitter and receiver having an optical centerline, the optical centerline of the first terminal transmitter being offset from the optical centerline of the second terminal receiver, and the optical centerline of the second terminal transmitter being offset from the optical centerline of the first terminal receiver; and each transmitter having a laser source for generating a laser beam, the laser beam from the first terminal transmitter being of sufficient power and diverging from the laser source at a sufficient angle to establish optical communication with the second terminal receiver despite misalignment therebetween, and the laser beam from the second terminal transmitter being of sufficient power and diverging from the laser source at a sufficient angle to establish optical communication with the first terminal receiver despite misalignment therebetween.