Injection laser for high-data-rate communication

The goal is the development of methods of coupling as much power from an injection laser as possible into a single-mode fiber, with the fiber permanently bonded to the laser in a protective package. Study of the factors controlling laser beam patterns continues. Some evidence of dimensional changes in the epoxy fiber-laser bonding has been seen; new epoxy is being tried. Several laser-fiber sealed packages have been assembled for evaluation. Power levels of about 1 mW have been coupled into the fiber, and long-term stability is being studied.