A 2X2 fiber-type optical phased array with four all-fiber PZT phase shifters was experimentally investigated. The beam steering by controlling the phase shift of each phase shifter was observed.
A 2X2 fiber-type optical phased array with four all-fiber PZT phase shifters was experimentally investigated. The beam steering by controlling the phase shift of each phase shifter was observed.
A scheme of two-mode injection-locked Fabry-Perot lasers using second-order-sideband injection is investigated, which can be used in 60 GHz ROF system. Experiment results show two-mode injection locking has enhanced t...
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A scheme of two-mode injection-locked Fabry-Perot lasers using second-order-sideband injection is investigated, which can be used in 60 GHz ROF system. Experiment results show two-mode injection locking has enhanced the frequency response of FP lasers.
Intra-channel nonlinearities are the major nonlinear penalties in 40 Gb/s and above high-speed transmission. In this paper electronic equalization of intra-channel nonlinearities is studied.
Intra-channel nonlinearities are the major nonlinear penalties in 40 Gb/s and above high-speed transmission. In this paper electronic equalization of intra-channel nonlinearities is studied.
We experimentally demonstrate 42.8 Gbit/s electro-absorption modulated NRZ transmission over 1200km standard single mode fiber. The effects of transmitter's chirp on the transmission performance are experimentally...
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We experimentally demonstrate 42.8 Gbit/s electro-absorption modulated NRZ transmission over 1200km standard single mode fiber. The effects of transmitter's chirp on the transmission performance are experimentally and numerically investigated.
We investigate numerically XPM-induced nonlinear phase noise in 40 Gb/s RZ-DPSK WDM systems with different dispersion maps. The result shows that nonlinear phase noise due to XPM can be effectively suppressed by optim...
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We investigate numerically XPM-induced nonlinear phase noise in 40 Gb/s RZ-DPSK WDM systems with different dispersion maps. The result shows that nonlinear phase noise due to XPM can be effectively suppressed by optimizing dispersion map.
An asymmetric long period grating with period grooves is chemically etched. Experimental results show that though the grooves are ablated, the period structure still remains. Analysis is given to explain the related m...
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An asymmetric long period grating with period grooves is chemically etched. Experimental results show that though the grooves are ablated, the period structure still remains. Analysis is given to explain the related mechanism.
We propose a scheduling-aware burst assembly algorithm to provide bandwidth-guaranteed and delay-bounded services for IP packets in IP-over-WDM networks. To transport IP packets efficiently over a network, they are as...
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We propose a scheduling-aware burst assembly algorithm to provide bandwidth-guaranteed and delay-bounded services for IP packets in IP-over-WDM networks. To transport IP packets efficiently over a network, they are assembled into bursts, and delivered within a given deadline. All IP packets in a burst should satisfy the deadline requirement, and, in turn, all assembled bursts are guaranteed to be served. To achieve this goal, the assembly and the scheduling processes of each burst need to be performed concurrently within the same active time-window (called joint window). The joint window size is set considering the deadlines of packets in a burst so that each of them (and, in turn, the burst itself) can satisfy its deadline. To guarantee service-availability for each assembled burst, the scheduling information (e.g., when and how long a slot is free for a burst) is fed back to the burst assembly process in each joint window. This scheduling information is used to determine when and how long an assembly process will be conducted. Those packets, which can not make the deadline, are not considered for the burst assembly process. Although, in our algorithm, the packets are transmitted in a burst (as described above), we investigate the packet-level performance for a IP-over-WDM network. The simulation experiments demonstrate that our algorithm can achieve low packet loss probabilities, and guarantee the delay-bound for delivered packets (loss probability and delay-bound are key factors for emerging IP services).
A method for suppressing the field-induced agglomeration of magnetic particles in a magnetic fluid is proposed. After the magnetic fluid is doped with silica particles, the agglomeration effect is weakened. The optica...
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ISBN:
(纸本)1424411742
A method for suppressing the field-induced agglomeration of magnetic particles in a magnetic fluid is proposed. After the magnetic fluid is doped with silica particles, the agglomeration effect is weakened. The optical properties of this system are analyzed. With this method, the quality of magnetic-fluid-based optical devices might be improved.
Recently, jitter is becoming an important performance criterion in switch scheduling to accommodate many emerging real-time applications. Formerly proposed low-jitter scheduling algorithms decompose traffic demands in...
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Recently, jitter is becoming an important performance criterion in switch scheduling to accommodate many emerging real-time applications. Formerly proposed low-jitter scheduling algorithms decompose traffic demands into a weighted sum of permutation matrices and then schedule these decomposed permutation matrices. However, a port pair's appearance in these decomposed matrices may exceed their actual traffic demand. Such extra allocation may result in high jitter for a port pair. In order to smoothly schedule each port pair, we propose a novel scheduling algorithm termed as dichotomy slot allocation (DSA). To achieve low jitter and small cell loss, DSA allocates slots to port pairs based on a designed Dichotomy Order. Both analysis and simulation results demonstrate that DSA achieves relatively lower jitter as compared to the state of the art.
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