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http://dx.doi.org/10.3807/KJOP.2016.27.5.181

Optical Characteristics of Unidirectional Single-mode Lasing Square Ring Cavities  

Lee, Jin-Woong (Department of Optical Engineering, Sejong University)
Lee, Jung-Woo (Department of Optical Engineering, Sejong University)
Kim, Young-Hoon (Department of Optical Engineering, Sejong University)
Hyun, Kyung-Sook (Department of Optical Engineering, Sejong University)
Publication Information
Korean Journal of Optics and Photonics / v.27, no.5, 2016 , pp. 181-187 More about this Journal
Abstract
We report on the parameter-dependent optical characteristics of the unidirectional single-mode lasing square ring cavities. Using the taper-step section in the square cavities, the resonant direction can be selected and we characterize the optical losses by changing the taper lengths. Various kinds of square ring cavities are fabricated, based on InGaAsP/InGaAs multiple quantum well semiconductor materials. From the experimental results we obtain the optimized taper length for a given device structure, while maintaining unidirectional single-mode lasing.
Keywords
Semiconductors; Microcavities; Optical resonators; Micro-Optical devices; Resonators;
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