At&t Bell Laboratories

American Telephone and Telegraph, Co.

At&t Information Systems Inc.

Jon R Sauer

Gary J Grimes

Lawrence J Haas

Apparatus for controlling the transition of a number of lasers that are transmitting light to an optical bus from an off state to a sub-threshold bias state so as to minimize the transmission of light from lasers in the sub-threshold bias state. The apparatus places each laser in the sub-threshold bias state a predetermined time before it is to transmit data to the bus; and then, the apparatus places each laser in the off state after the data transmission has occurred. The lasers transmit in a sequential order onto the optical bus.

Optical fiber bus controller

A non-invasive optical fiber coupler for coupling light into an optical fiber bus through the cladding surrounding the optical fiber bus without bending the optical fiber bus. The coupler comprises a tap optical fiber free end adjacent to and facing a region of straight optical fiber bus with the tap fiber free end and optical fiber bus region encapsulated with a junction media having substantially the same index of refraction as the cladding of the optical fiber bus. Since the bus cladding is not removed nor is the optical fiber bus bent, there is no additional light lost due to the coupler from the optical fiber bus.

Growing community of inventors

Aurora, CO, United States of America

Jon R Sauer