Browsing by Author "Lan, Ruei-Long"

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Polarization Characteristics of Quantum-Dot Vertical-Cavity Surface-Emitting Laser With Light Injection
(2010-02-01)
Peng, Peng-Chun
;
Lan, Ruei-Long
;
Wu, Fang-Ming
;
Lin, Gray
;
Lin, Chun-Ting
This investigation explores experimentally the optical characteristics of long-wavelength quantum-dot vertical-cavity surface-emitting lasers (QD VCSELs). The InAs QD VCSEL, fabricated on a GaAs substrate, is grown by molecular beam epitaxy with fully doped distributed Bragg reflectors. The optical characteristics of QD VCSEL without and with light injection are studied in detail. The QD VCSEL has the potential to be used in all-optical signal processing systems.
RF phase shifter using a distributed feedback laser in microwave transport systems
(2009-04-27)
Peng, Peng-Chun
;
Wu, Fang-Ming
;
Jiang, Wen-Jr
;
Lan, Ruei-Long
;
Lin, Chun-Ting
This work experimentally demonstrates the efficacy of a radio-frequency phase shifter using a distributed feedback laser in a microwave transport system. Phase shifts of about 101 are obtained at 8.75GHz. The proposed phase shifter can amplify microwave signals and thereby improve transmission performance. Additionally, a similar single sideband modulation can be generated by the phase shifter. Experimental results indicate that the proposed phase shifter can be used in future long-distance microwave transport systems and all optical inverters. (C) 2009 Optical Society of America