Abstract
Abstract The resonance properties of circular vertical-cavity surface-emitting lasers (VCSELs) are studied by using a newly developed equivalent network approach. Optical parameters, such as the stop-band or the reflectivity of periodic Bragg mirrors and the resonance wavelength, are explored for the design of these structures. To evaluate the differential quantum efficiency and the threshold current density, a transverse resonance condition of circular modal transmission-line theory is also utilized. This approach dramatically reduces the computational time as well as gives an explicit insight to explore the optical characteristics of circular VCSELs. Key Words : Circular Modal Transmission Line Theory, Circular VCSELs, Bragg mirrors * 정회원, 한성대학교 정보통신공학과접수일자 2012.1.8, 수정완료 2012.2.8.게재확정일자 2012.2.10Received: 8 January 2012 / Revised: 8 February 2012 /Accepted: 10 February 2012 * Corresponding Author: kwangho@hansung.ac.krDept. of Information and Communication Engineering, Hansung University, Seoul, Korea
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