| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2007: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
|
|---|
| Research Abstract |
The high-speed communications between fixed stations are generally performed by optical fiber communications. Bitrates of subscriber's lines have been increased by optical fiber communications. As a result, it is expected to improve the bitrates in backbone networks. To improve the bitrates, several lasers with different frequencies are used. In this way, the signal quality degradation is caused due to the concentration of optical power in a strictly narrow core of optical fiber. To assess the amount of degradation, computer simulations are conducted. However, calculations must be performed repeatedly to reproduce the actual phenomenon, and it needs a lot of computing time. By developing a simple, fast calculation method, this work will contribute to the efficient design of optical fiber communication systems.
|
