Title :
Arrayed-waveguide grating with branched outputs for simultaneous multichannel monitoring purposes
Author :
Lee, Jae-Hoon ; Kim, Tae-Yong ; Kim, Tae-Hoo ; Lee, Jae-Seung ; Park, Chang-Soo ; Seo, Wan-Seok
Author_Institution :
Dept. of Electron. Eng., Kwangwoon Univ., Seoul, South Korea
Abstract :
We propose an arrayed-waveguide grating (AWG) that has branched output waveguides for simultaneous multichannel monitoring purposes. The transmittances of two adjacent branched output waveguides are slightly different from each other. Thus, we can obtain crossover wavelengths, where the transmittances of adjacent output waveguides are the same with much smaller insertion losses than those of conventional AWGs. As a result, the proposed device can accurately monitor wavelength-division-multiplexed channel wavelengths in the presence of the amplified-spontaneous-emission noise.
Keywords :
diffraction gratings; integrated optics; monitoring; optical arrays; optical communication equipment; optical waveguides; wavelength division multiplexing; accurately monitor; adjacent branched output waveguides; adjacent output waveguides; amplified-spontaneous-emission noise; arrayed-waveguide grating; branched outputs; crossover wavelengths; simultaneous multichannel monitoring purposes; smaller insertion losses; transmittances; wavelength-division-multiplexed channel wavelengths; Arrayed waveguide gratings; Insertion loss; Monitoring; Optical communication equipment; Optical losses; Optical noise; Optical waveguides; Propagation losses; Stimulated emission; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
