| 摘要 |
PROBLEM TO BE SOLVED: To eliminate an undesirable wavelength component from a transmission pathway within a device.SOLUTION: A technique is described for eliminating feedback light in a high-power optical device. An optical device is provided that generates, along an optical pathway, an output light at a desired signal wavelength, where the generation of the output light at the signal wavelength results in generation of feedback light at an undesired feedback wavelength. A port is provided at a selected location along the optical fiber pathway. The port is terminated with a prescribed length of a filter fiber, where the filter fiber has loss characteristics at the feedback wavelength that result in the elimination of the feedback light from the optical fiber pathway through the port.SELECTED DRAWING: Figure 3 |
