Amplification by Means of Dysprosium Doped Low Phonon Energy Glass Waveguides
Patent, Filed 29 Aug 1997, patented 26 Oct 1999
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
Disclosed herein is an amplification method, an optical glass amplifier, a laser based on the amplifier and an amplification optical communication system, all based on a limited length of a single-mode glass fiber made from glass having phonon energy of less than about 350cm and doped with dysprosium. The glass includes 0.1-30 mol germanium, 0-40 mol arsenic, 0.02-20 mol X. 0.01-20 mol Y, and 0.001-2 weight dysprosium, wherein X is selected from the group consisting of gallium, indium and mixtures thereof selenium and wherein Y is selected from the group consisting of selenium, and mixtures of selenium and up to 50 of sulfur. The system includes a coupler, a silica-based signal fiber carrying the optical signal that is to be amplified in communication with said coupling means, a pump light source in communication with the coupler, an amplifier in communication with the coupler at one end and another silica-based fiber joined to the amplifier at its other end. The method includes the steps of introducing the optical signal to be amplified into the coupler, introducing a pump optical signal into the coupling means, combining the optical signal and the pump optical signal, introducing the combined optical signal into the amplifier and amplifying the optical signal by exciting the electrons in dysprosium no they emit at about 1.3 micrometers.
- Electrical and Electronic Equipment
- Fiber Optics and Integrated Optics