2015 Fiscal Year Final Research Report
Optical communication systems using Stokes-vector direct detection
Project/Area Number |
26630146
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Electron device/Electronic equipment
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Research Institution | The University of Tokyo |
Principal Investigator |
Kikuchi Kazuro 東京大学, 工学(系)研究科(研究院), 教授 (50134458)
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Project Period (FY) |
2014-04-01 – 2016-03-31
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Keywords | 光ファイバ通信 |
Outline of Final Research Achievements |
The Stokes vector of an optical signal does not depend on its absolute phase; therefore, we can construct the phase-insensitive optical communication system, using the Stokes vector as a modulation parameter. In such a system, multi-level optical signals can effectively be designed in the three-dimensional Stokes space and demodulated by direct detection, where low-complexity digital-signal processing is employed. We discuss the receiver configuration for the multi-level signal in the Stokes space and the efficient DSP algorithm for demodulating such a signal. Simulation results demonstrate that 16-ary signals in the Stokes space have good bit-error rate characteristics. Especially, the 16-ary signal at the moderate symbol rate of 25 Gsymbol/s can reach the bit rate of 100 Gbit/s even by using direct detection.
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Free Research Field |
光通信
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