Series group-broadcasting module for optical burst exchange network and its realization
A technology of optical burst switching and multicasting, which is applied in the field of optical switching networks, can solve problems such as the inability to realize multicast service quality assurance, hardware implementation difficulties, etc., and achieve the effect of solving multicast data transmission problems and realizing service quality
Inactive Publication Date: 2009-10-21
BEIJING UNIV OF POSTS & TELECOMM
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However, this method not only cannot guarantee the quality of service of multicast services, but also has certain difficulties in hardware implementation due to issues such as power allocation.
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[0030] like figure 1 As shown, the OBS multicast module realized by using fiber delay line (FDL) and optical splitter provided by the present invention mainly includes optical splitter, fixed / variable fiber delay line FDL, 1 * 2 optical switch and power compensation Device (EDFA) and other parts. Wherein, the optical splitter is connected with the above-mentioned 1×2 optical switch, and is connected with the fixed / variable fiber delay line FDL through the power compensation device. At the same time, the fixed / variable fiber delay line FDL is also connected to the 1×2 optical switch. The role of the optical splitter is to realize the replication of the optical signal, which splits the incident optical signal into two according to the power. The optical fiber delay line is used to realize the buffering of the optical signal, and it can be a fixed delay optical delay line or a variable delay optical delay line. But no matter which one, its maximum delay time must be greater th...
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The invention discloses a serial multicast module used in an optical burst switching network and a realization method thereof. The serial multicast module includes an optical splitter, an optical fiber delay line, a 1×2 optical switch, and a power compensation device; wherein, the optical splitter is connected to the 1×2 optical switch, and the optical fiber delay line is connected to connected; the fiber delay line is connected with the 1×2 optical switch. The serial multicast module utilizes the storage of the optical fiber delay line and the control of the 1×2 optical switch to realize circulation, and realizes the output of single-port to multi-port in serial output mode. The invention can not only realize the output of a single port to any multi-port in a constant power and serial mode, but also can realize the quality of service guarantee and effectively solve the multicast data transmission problem in the optical burst switching network.
Description
technical field [0001] The present invention relates to a serial multicast module for Optical Burst Switching (OBS) network and its implementation method, in particular to an optical burst switching module which is realized by using a fiber delay line (FDL) and an optical splitter The invention relates to a serial multicast module in the process of storing and forwarding multicast data packets in a network and a realization method thereof, belonging to the technical field of optical switching networks. Background technique [0002] The rapid growth of Internet traffic has prompted people to accelerate the in-depth research on wavelength division multiplexing (WDM) transmission and optical switching technology. The development trend of IP network and the advancement of optical technology make WDM the foundation of next generation Internet. In the optimized IP optical network dominated by Internet traffic, the optical switching network has become one of the core technologies ...
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IPC IPC(8): H04Q11/00H04L12/56H04L45/16
Inventor 纪越峰刘心王宏祥乔耀军
Owner BEIJING UNIV OF POSTS & TELECOMM