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The near and far field coupling behavior in plasmonic and metamaterial systems have been extensively studied over last few years. However, most of the coupling mechanisms reported in the past have been passive in nature which actually fail to control the coupling mechanism dynamically in the plasmonic metamaterial lattice array. Here, we demonstrate a… (More)
A multi-pumping scheme to get a gain-flattened fiber Raman amplifier is presented and a complete computing model is established to optimize the pump wavelength and power allocation with flat gain and broad bandwidth.
This paper describes the design and operation of a narrow linewidth, linear cavity, erbium-doped fiber laser with saturable absorber. The saturable absorber, spliced to a narrowband fiber Bragg grating, acts as a transition fiber grating with narrow bandwidth that automatically tracks the lasing wavelength. Laser output power was ~2.5mw at 1544.39nm for a… (More)
A new orthogonal-polarization dual-wavelength fiber laser by fabricating a uniform FBG and a chirped FBG in a polarization-maintaining erbium-doped fiber (PM-EDF) is proposed and demonstrated. The wavelength space is 0.18nm and the optical signal-to-noise ratio is greater than 50 dB with pump power of 246-mW. Chirped FBG is used to make the reflectivity… (More)