Abstract A fiber Bragg grating (FBG) sensor system using a fiber ring laser with a hybrid amplifier is proposed and demonstrated. The hybrid amplifier comprises an erbium doped waveguide amplifier and a semiconductor optical amplifier. The experiment shows that such the hybrid amplifier has a high amplifier spontaneous emission power and gain spectrum. Moreover, this fiber ring laser can provid...

In recent time, the demand for Darlington pair amplifier for high data rate communication system has been appreciated and highlighted. The application of Darlington pair amplifier is supported in a condition, where requirement of high gain at a low frequency is applicable. Recently, Darlington pair amplifier has been testified with high gain bandwidth product for current applications. If we nee...

Abstract High-power femtosecond mid-infrared (MIR) lasers are of vast importance to both fundamental research and applications. We report a high-power master oscillator power amplifier laser system consisting single-mode Er:ZBLAN fiber mode-locked pre-amplifier followed by large-mode-area main amplifier. The is actively cooled bidirectionally pumped at 976 nm, generating slope efficiency 26.9%....

Thisarticlepresentsthedesign and fabrication ofa high power amplifierbased onwilkinson combiner. A 45W basic amplifier module isdesigned usinglaterally-diffused metal-oxide semiconductor (LDMOS) fieldeffect transistor (FET) PTFA260451E transistor. Wilkinson combineris used to combine two input powers toproduce 90W of power. Theproposed is researched, designed optimized usingadvanced design syst...