Patent ID: 8948605
Filing Date: 2015-02-03
Classification: H01S,H04B

Abstract:
1. An apparatus configured to amplify light at different wavelengths in an optical network, the apparatus having a waveguide, the waveguide comprising: a first active material configured to amplify light at a first wavelength received at a first end of the waveguide; a second active material configured to amplify light at a second wavelength; a first reflector located between the first and second active materials and which is configured to reflect light at the first wavelength in a direction toward the first end and which is configured to be substantially transparent to light at the second wavelength; and a second reflector adjacent the second active material which is configured to reflect light at the second wavelength in a direction toward the first end, wherein the first reflector includes at least one of an air gap and a Bragg reflector between the first and the second active materials.