Abstract: The present invention provides a driving device and an electric motorcycle driving system using the driving device. Said driving device comprises a shaft, a pulley disk assembly configured on the shaft, and a motor. The motor is an outer rotor or inner rotor motor. One pulley disk of the pulley disk assembly is connected to one end of the outer rotor sleeve or the inner rotor of the motor, so it can be driven by the outer rotor sleeve or the inner rotor and rotate or move around the shaft; furthermore, an electric motorcycle driving system can use the driving device to connect with a battery and a stepless speed change mechanism, so as to use the electric power of the battery to operate the stepless speed change mechanism, and to consequently enhance the performance of speed and torque output of the electric motorcycles.

Abstract: The present invention provides a driving device and an electric motorcycle driving system using the driving device. Said driving device comprises a shaft, a pulley disk assembly configured on the shaft, and a motor. The motor is an outer rotor or inner rotor motor. One pulley disk of the pulley disk assembly is connected to one end of the outer rotor sleeve or the inner rotor of the motor, so it can be driven by the outer rotor sleeve or the inner rotor and rotate or move around the shaft; furthermore, an electric motorcycle driving system can use the driving device to connect with a battery and a stepless speed change mechanism, so as to use the electric power of the battery to operate the stepless speed change mechanism, and to consequently enhance the performance of speed and torque output of the electric motorcycles.

Abstract: The present invention provides a readout device of an accelerator beam monitoring detector, comprising: a transimpedance amplifier receiving a charge signal from a particle detector and converting the charge signal into an analog voltage signal; and a data acquisition system comprising an analog-to-digital converter (ADC) to covert the analog voltage signal into digital data.

Abstract: The present invention provides a method for producing a Mach-Zehnder filtering device. The method includes the following steps: (a) providing an optical fiber having a jacket and a core containing rare earth element dopants; (b) stripping the jacket of a segment of the optical fiber; and (c) performing a fused-tapering to the stripped segment of the optical fiber to form a first and a second necks simultaneously, wherein the core exists in both the first and the second necks to form a Mach-Zehnder interferometer.

Abstract: A cladding-pumped gain optical fiber is provided. The cladding-pumped gain optical fiber includes a core transmitting a signal light; a first cladding covering the core and having an optical-gain dopant; a second cladding covering the first cladding for transmitting a pumping light; and a third cladding covering the second cladding for reflecting the pumping light.

Abstract: The present invention provides a method for producing a Mach-Zehnder filtering device. The method includes the following steps: (a) providing an optical fiber having a jacket and a core containing rare earth element dopants; (b) stripping the jacket of a segment of the optical fiber; and (c) performing a fused-tapering to the stripped segment of the optical fiber to form a first and a second necks simultaneously, wherein the core exists in both the first and the second necks to form a Mach-Zehnder interferometer.

Abstract: A wavelength-tunable mode-locked fiber laser system is provided and includes an optical cavity. The optical cavity outputs an output laser pulse having an adjustable principal wavelength, and includes a short-wavelength-pass filter, a polarization controller, an optical gain fiber and a fiber. The short-wavelength-pass filter produces an intracavity laser pulse. The fiber has a length, and connects the short-wavelength-pass filter, the polarization controller and the optical gain fiber in series. The optical cavity has an anomalous dispersion range and a net group-velocity dispersion being within the anomalous dispersion range due to the length of the fiber. The optical cavity causes the intracavity laser pulse to propagate therein for providing the output laser pulse, providing a first laser pulse, a second laser pulse and a third laser pulse to the short-wavelength-pass filter, the polarization controller and the optical gain fiber respectively, and adjusting the intracavity laser pulse.

Abstract: A cladding-pumped gain optical fiber is provided. The cladding-pumped gain optical fiber includes a core transmitting a signal light; a first cladding covering the core and having an optical-gain dopant; a second cladding covering the first cladding for transmitting a pumping light; and a third cladding covering the second cladding for reflecting the pumping light.

Abstract: A wavelength-tunable mode-locked fiber laser system is provided and includes an optical cavity. The optical cavity outputs an output laser pulse having an adjustable principal wavelength, and includes a short-wavelength-pass filter, a polarization controller, an optical gain fiber and a fiber. The short-wavelength-pass filter produces an intracavity laser pulse. The fiber has a length, and connects the short-wavelength-pass filter, the polarization controller and the optical gain fiber in series. The optical cavity has an anomalous dispersion range and a net group-velocity dispersion being within the anomalous dispersion range due to the length of the fiber. The optical cavity causes the intracavity laser pulse to propagate therein for providing the output laser pulse, providing a first laser pulse, a second laser pulse and a third laser pulse to the short-wavelength-pass filter, the polarization controller and the optical gain fiber respectively, and adjusting the intracavity laser pulse.