Browsing by Author "Kao, W. C."

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40 GHz Phase Shifter based on Semiconductor Laser
(2008-04-10)
Peng, P. C.
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Wu, F. M.
;
Lin, C. T.
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Chen, J. H.
;
Kao, W. C.
This investigation experimentally demonstrates a 40 GHz phase shifter based on a semiconductor laser. The phase shift is achieved by adjusting the bias current and wavelength detuning. The device has an optical delay of 23 ps and a phase shift of about 331 degrees.
Fast and slow light property improvement in erbium-doped amplifier
(2013-01-01)
Peng, P. C.
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Wu, F. K.
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Kao, W. C.
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Chen, J.
;
Lin, C. T.
This work experimentally demonstrates improvement of the fast light property in erbium-doped amplifiers at room temperature. The difference between the signal power and the pump power associated with bending loss is used to control the signal power at the different positions of the erbium-doped fiber (EDF) to improve the fast light property. Periodic bending of the EDF increases the time advance of the probe signal by over 288%. Additionally, this concept also could improve the fast light property using coherent population oscillations in semiconductor optical amplifiers.
SOA-based fiber ring laser use in a photonic radio-frequency phase shifter
(2011-03-01)
Wu, F. M.
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Peng, P. C.
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Chen, J.
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Lin, C. T.
;
Kao, W. C.
This investigation demonstrates the feasibility of a semiconductor optical amplifier (SOA)-based fiber ring laser use in a photonic radio-frequency (RF) phase shifter. Experimental results indicate that a fiber ring laser can successfully replace an external pump laser in a photonic RF phase shifter. The RF phase shifter can be turned by adjusting the power of the fiber ring laser.
Tunable Slow Light in Quantum Well Vertical-Cavity Surface-Emitting Laser at 40 GHz
(2008)
Peng, P. C.
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Wu, F. M.
;
Lin, C. T.
;
Chen, J. H.
;
Shih, P. T.
This investigation experimentally demonstrates tunable slow fight in a quantum well vertical-cavity surface-emitting laser at 40 GHz. Tunable optical delays are achieved by adjusting the bias current and wavelength detuning. (C) 2008 Optical Society of America