Browsing by Author "Wang, Shou-Wei"

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High performance ultraviolet micro-LED arrays for fine-pitch micro displays
(2019-01-01)
Tsai, Yi-Lin
;
Huang, Yu-Ming
;
Yang, Shu-Mei
;
Kuo, Wei-Hung
;
Fang, Yen-Hsiang
Highly efficient ultraviolet micro LED arrays are demonstrated. Small devices (5 microns in size) suitable for high resolution (725 ppi) can be produced with low leakage current and good emission spectra stability. A 10 by 10 array is achieved with passive-matrix driving connection.
High Speed Directly Modulated Fabry-Perot Lasers With an Ultra-Short Cavity Length
(2020-05-01)
Tsai, Yi-Lin
;
Wang, Shou-Wei
;
Huang, Huang-Hsiung
;
Shih, Hsiang-Yun
;
Lu, Po-Yen
In this study, Fabry-Perot quantum well lasers with shortened cavity designs (25 and 50 mu m) were fabricated. The devices had dry-etched and cleaved facets and exhibited an output power of up to 2.36 mW for a cavity length of 25 mu m; good spectral performance was achieved. Single-optical-mode operation with better than 25dB of side mode suppression ratio can be achieved for the fabricated devices with 25- and 50-mu m cavities. The short-cavity devices also exhibited highspeed modulation at elevated temperatures. Moreover, 25 Gb/s eye diagrams could be obtained at 65oC for the 25 mu m device and 55oC for the 50 mu m device. Due to their small area, ultra-shortcavity Fabry-Perot laser can be suitably used in next-generation light sources for optical communication.
Simulation Model of Oxide-Aperture Strain Quantum Well VCSEL
(2019-01-01)
Shih, Hsiang-Yun
;
Cho, Yu-Yun
;
Hsu, Shun-Chieh
;
Huang, Yu-Ming
;
Wang, Shou-Wei
An oxide aperture strained quantum well VCSEL model was built based on measured results. The indium composition of MQW was changed to maximize the frequency response. The simulation result shows that the bandwidth can be improved and reach 30.88GHz.