We present numerical results of second and third harmonic generations in slow light and conventional waveguides including nonlinear material. The results show that the slow light in the former has much stronger nonlin...
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High energy Noise-like pulses has been generated from a passively mode locking fiber laser with large normal dispersion. Super-continuum more than 600nm can be generated directly by launching the pulses into high nonl...
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The emerging new services are driving the evolution of optical network. One of such services is standard- or high-definition television (SDTV and HDTV) video stream. To support such services more efficiently, it is ne...
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ISBN:
(纸本)9781424409822;1424409829
The emerging new services are driving the evolution of optical network. One of such services is standard- or high-definition television (SDTV and HDTV) video stream. To support such services more efficiently, it is necessary to introduce multicasting capability to the optical network. This paper provides an overview on the multicast testbed of IP over automatic switched optical network (ASON) in 3TNET project. The goal of 3TNET is to develop a new-generation network for scalable SDTV/HDTV and other broadband services. The paper will introduce and discuss the features of optical multicast, multicast extension to generalized multi-protocol label switch (GMPLS) framework tiered and overlay multicast model of IP/ASON, and multicast applications in three cities of Shanghai, Nanjing, and Hangzhou in the Yangtze River Delta region of China.
Although there are some researches have been done on the testbeds or architectures for optical grid applications, few efforts have been made on the scheduling problem for the optical grid application in theoretical de...
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ISBN:
(纸本)9781424409822;1424409829
Although there are some researches have been done on the testbeds or architectures for optical grid applications, few efforts have been made on the scheduling problem for the optical grid application in theoretical details. When opticalnetworks are considered as resources and jointly scheduled with other grid resources, communication contention must be taken into consideration for efficient task scheduling. This paper analyzes two schemes for reducing the communication contention in joint scheduling of computation and network resources for optical grid, one is the adaptive routing scheme and the other is grid resource selection scheme. The adaptive routing scheme, that was proposed in another paper [16] can detour the heavy traffic and find an earliest start route for each edge scheduling. A multilevel method for grid resource selection scheme is proposed in this paper, which help to schedule tasks onto the nearby resources, leading to a reduction in the average data transferred across individual links. Simulation results show that when we employ the two schemes together in the joint scheduling model, most of the communication contention can be removed, producing the smallest schedule length with relatively lower link utilization.
The growing demand for bandwidth requires the increasing of capacity and reach of wavelength-division multiplexing (WDM) systems, and simultaneous reducing of cost per bitxkm. In this report, I will at first introduce...
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The growing demand for bandwidth requires the increasing of capacity and reach of wavelength-division multiplexing (WDM) systems, and simultaneous reducing of cost per bitxkm. In this report, I will at first introduce the 40 Gbit/s transponder and 40x42.8 Gbit/s WDM long-haul transmission experimental system over standard single mode fiber using all-Raman amplification in our laboratory. By optimizing the chirp of electro-absorption modulation and dispersion compensation, 42.8 Gbit/s NRZ transmission over 1200 km standard single mode fiber was achieved. Then our work about the fiber impairments in Nx40 Gbit/s WDM and polarization-division multiplexing (PDM) system will be reviewed. Also the technique to mitigate the impairment will be described. In particular, Electronic equalization used to overcome the distortion caused by inter-symbol interference (ISI) will be reviewed, and its capability of equalization for intra-channel nonlinearity will be discussed.
The impact of IP over optical two-layer multicasting on the performance of channel zapping is discussed through two simple experiments and evaluated by an large scale concurrent video delivery testing in the 3TNet tes...
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ISBN:
(纸本)9781424409822;1424409829
The impact of IP over optical two-layer multicasting on the performance of channel zapping is discussed through two simple experiments and evaluated by an large scale concurrent video delivery testing in the 3TNet testbed in Yangtze River Delta, China. The results of 1040 concurrent users testing are reported.
We propose to utilize the highly dispersive coupled resonator structure for sensitive rotation sensing. The coupled resonator induced transparency based "slow light" gyroscope is analyzed and an AB-init FDTD...
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We propose to utilize the highly dispersive coupled resonator structure for sensitive rotation sensing. The coupled resonator induced transparency based "slow light" gyroscope is analyzed and an AB-init FDTD method is proposed for device designing.
Fiber tip with a negative refractive index material (NIM) layer for focusing the beam is proposed. The property of the fiber tip is analyzed using finite difference time domain (FDTD) method.
Fiber tip with a negative refractive index material (NIM) layer for focusing the beam is proposed. The property of the fiber tip is analyzed using finite difference time domain (FDTD) method.
A 4-arm Mach-Zehnder Modulator (MZM) used as a key component of a microwave generator is proposed,the operation principle of the of the generator is described and simulated.
A 4-arm Mach-Zehnder Modulator (MZM) used as a key component of a microwave generator is proposed,the operation principle of the of the generator is described and simulated.
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