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http://dx.doi.org/10.3807/KJOP.2004.15.2.171

Fabrication of deflector integrated laser diodes and light deflection  

김강호 (한국 전자통신 연구원 반도체 원천기술연구소 광통신소자 연구부)
권오기 (한국 전자통신 연구원 반도체 원천기술연구소 광통신소자 연구부)
김종회 (한국 전자통신 연구원 반도체 원천기술연구소 광통신소자 연구부)
김현수 (한국 전자통신 연구원 반도체 원천기술연구소 광통신소자 연구부)
심은덕 (한국 전자통신 연구원 반도체 원천기술연구소 광통신소자 연구부)
오광룡 (한국 전자통신 연구원 반도체 원천기술연구소 광통신소자 연구부)
김석원 (울산대학교 자연과학대학 물리학과)
Publication Information
Korean Journal of Optics and Photonics / v.15, no.2, 2004 , pp. 171-176 More about this Journal
Abstract
A light deflector integrated laser diode(LD) was fabricated and the characteristics of LD and ourput beam deflection as a function of deflector injection current were measured. To integrate the deflector with LD, a passive waveguide was integrated with the LD and a triangular-type light deflector was fabricated on the upper clad of the passive waveguide section. Light deflection from the fabricated light deflector is controlled by the effective refractive index variation induced by carrier injection. To characterize the effect of the deflector injection current, threshold current, slope efficiency, and output beam spectrum were measured as a function of deflector injection current. From these measured data, the increment in the threshold current and the decrement of the slope efficiency were observed. However, the output beam spectrum was not affected by the deflector. The Beam Propagation Method(BPM) was used to simulate the proposed device and the light deflection was measured by the far-field pattern of the output beam as a function of the deflector injection current. In the fabricated deflector integrated LD, the deflection angle of 1.9$^{\circ}$ at the injection current of 15 ㎃ was obtained.
Keywords
Light deflector; laser diode; light deflection;
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