| Budget Amount *help |
¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2013: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2012: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2011: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
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| Research Abstract |
We have stuied Raman amplification in passive optical networks(PON). We proposed a use of a reflector, which reflects pump wave for Raman amplification, to mitigate pump power. We also studied the upgrade of 10G-EPON (XG-PON) systems uisng the proposed fiber based hybrid-Raman amplification. For hybrid-Raman amplification, we use an Erbum-doped fiber and a high-nonlinear fiber. In acess networks, there are many splices and connectors. These reflect signal waves and may cause a multipath interference(MPI). We evaluate required reflection coefficients of splices and connectors.
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