Apparatus comprising an optical gain device, and method of produ

Details Apparatus comprising an optical gain device, and method of produ Apparatus comprising an optical gain device, and method of produ

1990-09-07

1991-08-13

Sikes, William L.

Optical: systems and elements

Optical amplifier

Optical fiber

385 31, 385142, G02B 626

Patent

active

050391909

ABSTRACT:
Disclosed is apparatus comprising an optically pumped optical gain device that comprises a rare earth (RE)-doped planar waveguide with non-uniform dopant distribution in the core of the waveguide. The RE ions are advantageously distributed such that the ions are concentrated in a core region in which the mode intensity of both signal radiation and pump radiation is relatively high. In preferred embodiments of a single mode planar waveguide according to the invention the RE ions are substantially concentrated in the central core region. A method of making the disclosed apparatus is also disclosed. The method involves implantation of RE ions into the core region.

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