Title :
New design for low-loss star couplers and arrayed waveguide grating devices
Author :
Park, Joonoh ; Chung, Youngchul ; Baek, Soohyun ; Lee, Hyung-Jong
Author_Institution :
Dept. of Electron. Commun. Eng., Kwangwoon Univ., Seoul, South Korea
fDate :
5/1/2002 12:00:00 AM
Abstract :
We propose a new loss reduction method in star couplers employing UV-written tapers that replace the free propagation region in the conventional star couplers and apply them to an arrayed waveguide grating (AWG) device. The insertion loss of the new AWG device can be reduced to 0.31 dB, which is about 0.7 dB lower than that of the AWG without UV-written tapered waveguides.
Keywords :
optical arrays; optical communication equipment; optical couplers; optical design techniques; optical losses; optical waveguide theory; wavelength division multiplexing; 0.31 dB; AWG device; UV-written tapered waveguides; UV-written tapers; arrayed waveguide grating device; arrayed waveguide grating devices; free propagation region; insertion loss; loss reduction method; low-loss star coupler design; star couplers; Arrayed waveguide gratings; Couplers; Etching; Insertion loss; Optical arrays; Optical losses; Optical waveguides; Propagation losses; Waveguide transitions; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
