A5083362199- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Photonic Crystal and Fiber Optics
- Advanced Computational Techniques and Applications
- Lattice Boltzmann Simulation Studies
- Embedded Systems and FPGA Design
- Fluid Dynamics and Heat Transfer
- Advanced Sensor and Control Systems
- Fluid Dynamics Simulations and Interactions
National Laboratory of Solid State Microstructures
2023
Yanshan University
2010-2023
Hebei Normal University of Science and Technology
2007-2012
This paper has developed a new-type groundwater dynamic auto-monitoring system based on Smart Device. The adopted Device as host computer of data acquisition, used Windows Mobile which was prevalent operation now, software development environment Visual Studio.NET 2003, and C# the developing language .NET framework. It serial port RS232 communication interface between monitor machine utilized multi-threading design to achieve communication. standardized textual XML store data. And this...
Multi-wavelength fiber laser has received more and attention due to its high quality output laser, good heat dissipation, compact structure, strong resistance electromagnetic interference. The key of multi-wavelength is the suppression mode competition. In this paper, competition technologies have been studied analyzed.
A narrow-linewidth photonic crystal fiber (PCF) laser operating at room temperature with two Bragg gratings integrated directly is demonstrated. Fabrication of the grating in a investigated experimentally by phase mask method. Under optimal experiment condition, we fabricate optical four obvious peaks. Moreover, continuous-wave all operation 1549.6nm diode-pumped PCF fabricated. constrained bandwidth 50 pm formed through locking on overlapping peak one side lobes other. It possible to...
Abstract To solve the low diffusion efficiency in multiple‐fluid coupling process by Lagrangian method, paper presents a simulation algorithm based on MPM and PFM. First, MPM, we model multiphase flow Eulerian grids capture sharp interfaces between immiscible fluids combined with The gas phase is further treated as fluid during gas–liquid interaction. Second, to demonstrate natural moving evolution from high energy state state, proposes local minimize bulk function control state. Finally,...
We present a four-channel ultrafast wavelength-swept distributed feedback (DFB) semiconductor laser array based on the reconstruction-equivalent-chirp (REC) technique using instantaneous injection current modulation. With aid of our designed driving circuit system consists microcontroller unit (MCU), field-programmable gate (FPGA) and negative metal-oxide-semiconductor field effect transistors (n-MOSFETs), precise pulse for 4-channel REC-DFB can be generated fast tuning 16.424 nm within 10...
With the quickly development of fiber communication, PMD(Polarization mode dispersion) has became one key factor which limit high-bit rate system performance. In 1986, C.D.Poole[1] and other people found that if do not consider loss SOP, two upright PSP will change along certain length SMF. 1987, D.Andresciani N.S.Bergano validate theory C.D.Poole each either. Late ninety last century, statistical forming[2]. paper, we discuss study PMD, including statistics measure technology, affect by PMD...
With the development of optical fiber communication, and after chromatic dispersion attenuation are compensated for, polarization mode (PMD) in fibers becomes more important cannot be ignored when transmission system is up to 40Gbit/s or above, distance several thousand kilometers long. In paper, it discussed four kinds compensation schemes communication system, point out that different use by pulse broadening theory. And speed very high long, necessary high-order PMD. It compared 2nd-order...
When attenuation and chromatic dispersion are compensated for, polarization mode (PMD) is a major limitation to the transmission capabilities of optical communication systems. So it necessary study PMD. In paper, we simulated first-order PMD statistical properties, relationship Mean DGD distance, deterioration receiver pulse broadening induced by on theory, distance relay L limited system speed B under different PMD, several systems restrict etc., come conclusion that have some restrictions...
With the development of high-speed, long-distance optical fiber communication systems, single-mode polarization mode dispersion (PMD: Polarization dispersion) becomes one important factor limiting transmission. can cause pulse broadening in thedigital transmission system, result inter-symbol interference digital communications, has seriously affected quality signal Because PMD statistical properties under external influences during transmission, compensation technology is much more complex...