The paper summarizes recent advances in Er and Yb doped mode locked fiber lasers with saturable absorbers such as semiconductor and carbon nanotube saturable absorbers.
ISBN:
(纸本)9781424438303
The paper summarizes recent advances in Er and Yb doped mode locked fiber lasers with saturable absorbers such as semiconductor and carbon nanotube saturable absorbers.
We demonstrate a timing jitter compensation system by regulating the 10 th harmonic phase difference of mode locked laser pulses for long distance timing distribution. So far we have obtained 48-ps timing jitter of a...
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ISBN:
(纸本)9781424438303
We demonstrate a timing jitter compensation system by regulating the 10 th harmonic phase difference of mode locked laser pulses for long distance timing distribution. So far we have obtained 48-ps timing jitter of a 40-kilometer fiber link.
A novel 6-DOF parallel manipulator composed of two limited-DOF manipulators is proposed in this paper, the degree of freedom (DOF) of this manipulator is analyzed and the position kinematic modeling is established. Th...
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A novel 6-DOF parallel manipulator composed of two limited-DOF manipulators is proposed in this paper, the degree of freedom (DOF) of this manipulator is analyzed and the position kinematic modeling is established. The Jacobian matrix is derived by vector loops equations. The workspace is determined considering the interference check by the numerical method. Furthermore, the performance of the mechanism is evaluated according to dexterity criteria. In order to satisfy the different configuration requirements, the two reconfigurable structures are presented based on the presented 6-DOF parallel mechanism. The work provides basis for the development of the novel robotic manipulator.
We demonstrate a new saturable absorber mirror coated with thin-film single-wall carbon nanotubes. Using such a device, we build a T-type ring cavity fiber laser and obtained pulses of 586 fs.
ISBN:
(纸本)9781424438303
We demonstrate a new saturable absorber mirror coated with thin-film single-wall carbon nanotubes. Using such a device, we build a T-type ring cavity fiber laser and obtained pulses of 586 fs.
In this paper, a hybrid method is developed to real-timely solve dynamic problems governed by second partial differential equation (PDE). The present method involves the combination of reduced-basis method (RBM) and i...
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In this paper, a hybrid method is developed to real-timely solve dynamic problems governed by second partial differential equation (PDE). The present method involves the combination of reduced-basis method (RBM) and implicit Newmark's method. In this method, it needs a training space, which contains the solutions corresponding to some carefully selected sample parameters and all time steps. A greedy algorithm is adopted to adaptively select basis vectors from the training space for constructing reduced basis space. It results in a reduced system by the standard Galerkin projection the matrices and loading vector. The solutions in arbitrary new parameters are approximately regenerated by solving the reduced Newmark's formulas. To further enhance the efficiency, an off-line/on-line decomposition is suggested for the computational implementation of the method. The present method is applied to analysis the transient response in an actual functionally graded material (FGM) plate. In comparison, the computational cost of transient displacement analysis in FGM plate is reduced significantly. The numerical example demonstrates the efficiency and accuracy of our algorithm.
作者：
孔艳陈险峰夏宇兴Department of Physics
The State Key Laboratory on Fiber Optic Local Area Communication Networks and Advanced Optical Communication System Shanghai Jiao Tong University Shanghai 200240
In order to minimize the effect of the unconsidered frequency components on the generated compression pulse, the phasing-blanking effect is taken into account of designing the one^dimensionai aperiodic domain reversal...
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In order to minimize the effect of the unconsidered frequency components on the generated compression pulse, the phasing-blanking effect is taken into account of designing the one^dimensionai aperiodic domain reversal structure. Hierarchic genetic algorithm for the design of a domain reversal grating to modulate the spectrum and phase of the generated SH pulse simultaneously are presented. Our simulation shows that the quality of an output pulse is fairly improved.
We report a passively mode-locked high repetition rate erbium-doped femtosecond fiber laser via nonlinear polarization rotation, with a fundamental repetition rate of 101.94 MHz. The output power is 34 mW when pumped ...
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We report a passively mode-locked high repetition rate erbium-doped femtosecond fiber laser via nonlinear polarization rotation, with a fundamental repetition rate of 101.94 MHz. The output power is 34 mW when pumped by a single mode fiber coupled laser diode at 370 mW. The spectral width is 25 nm, corresponding to a transform limited pulse width of 105 fs.
In this work, we use a low-pass filter in the burst-mode receiver between PIN+TIA and LA to optimize the receive bandwidth, and finally to improve the receiver performance of uncooled Reflective-SOA-based WDM-PON sign...
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These days while the traditional Internet cannot meet the requirement of data-intensive communications in large scale escience grid applications, Optical network which is also referred to as Lambda Grid provide a simp...
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