Title :
Lateral current injection distributed feedback laser with wirelike active regions
Author :
Shindo, Takahiko ; Okumura, Tadashi ; Futami, Mitsuaki ; Osabe, Ryo ; Ito, Hitomi ; Koguchi, Takayuki ; Amemiya, Tomohiro ; Nishiyama, Nobuhiko ; Arai, Shigehisa
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
One of the promising candidates to solve a problem of a performance limitation of LSI is replacing the electrical global wiring by an on chip optical interconnection. A semiconductor membrane laser, which consists of a high-index contrast waveguide, is expected to operate with ultra low threshold current due to an enhanced modal gain. We have introduced a lateral current injection (LCI) structure for electrically pumped membrane laser, and demonstrate LCI type Distributed feedback (DFB) laser with wirelike active region prepared on a semi-insulating (SI) InP substrate. A threshold current of as low as 11 mA and a stable single-mode operation were obtained for a device with the stripe width of 1.5 μm and the cavity length of 300 μm under a room-temperature continuous-wave (RT-CW) condition.
Keywords :
distributed feedback lasers; integrated optics; laser cavity resonators; laser modes; optical pumping; quantum well lasers; refractive index; waveguide lasers; InP; cavity length; chip optical interconnection; electrical global wiring; electrically pumped membrane; high-index contrast waveguide; lateral current injection distributed feedback laser; modal gain; room-temperature continuous-wave operation; semiconductor membrane laser; semiinsulating substrate; size 1.5 mum; size 300 mum; stable single-mode operation; stripe width; temperature 293 K to 298 K; ultralow threshold current; wirelike active regions; Distributed feedback devices; Gratings; Indium phosphide; Laser theory; Pump lasers; Semiconductor lasers; Threshold current;
Conference_Titel :
Compound Semiconductor Week (CSW/IPRM), 2011 and 23rd International Conference on Indium Phosphide and Related Materials
Conference_Location :
Berlin
Print_ISBN :
978-1-4577-1753-6
Electronic_ISBN :
978-3-8007-3356-9
