Title :
FDTD simulation of photonic devices and circuits based on circular and fan-shaped microdisks
Author :
Sakai, Atsushi ; Baba, Toshihiko
Author_Institution :
Div. of Electr. & Comput. Eng., Yokohama Nat. Univ., Japan
fDate :
8/1/1999 12:00:00 AM
Abstract :
This paper proposes novel photonic devices and circuits composed of circular and fan-shaped microdisks. Using the finite difference time domain (FDTD) method, we investigated propagation characteristics of light in fundamental elements, the coupler of closely placed disks and the butt-joint of disks. The coupler can be used for extracting the light from a disk laser. It was shown that the efficiency of the light extraction can be over 70% by the coupler. A mode size converter and a tunable filter combined with couplers were numerically demonstrated. The joint can be applied to a compact and sophisticate optical wiring in a large scale circuit, since the joint loss estimated was as low as 0.1 dB
Keywords :
finite difference time-domain analysis; laser modes; laser theory; laser tuning; microcavity lasers; optical losses; semiconductor device models; semiconductor lasers; 70 percent; FDTD method; FDTD simulation; butt-joint; circular microdisks; closely placed disks; disk laser light extraction; fan-shaped microdisks; finite difference time domain; fundamental elements; joint loss; large scale circuit; mode size converter; optical wiring; photonic circuits; photonic devices; propagation characteristics; tunable filter; Circuit simulation; Coupling circuits; Finite difference methods; Laser modes; Optical coupling; Optical filters; Optical propagation; Time domain analysis; Tunable circuits and devices; Wiring;
Journal_Title :
Lightwave Technology, Journal of
