2012 Fiscal Year Final Research Report
A fast assessment method of self/cross-phase modulation on optical phase/amplitude modulation systems
| Project/Area Number |
22560373
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Communication/Network engineering
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| Research Institution | Kyoto University |
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Principal Investigator |
NORIMATSU Seiji 京都大学, 大学院・情報学研究科, 准教授 (20303886)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 情報通信工学 / 光ファイバ通信 / 位相変調 / ファイバ非線形効果 |
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| Research Abstract |
Bitrates of subscriber's lines have been increased by optical fiber communications. As a result, it is expected to improve capacity of backbone networks. To improve capacity, optical amplitude/phase modulation is studied, although current modulation utilizes optical amplitude. To improve capacity more, more than one laser with different frequencies is used. In that case, the signal quality degradation arises due to the concentration of optical power in a strictly narrow core of an 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 and fast calculation method, this work will contribute to the efficient design of optical fiber communication systems using optical amplitude/phase modulation.
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Research Products
(5 results)
