2017 Fiscal Year Final Research Report
Study of the homodyne detection for the optical M-ary QAM signal on the optical frequency synchronous network
| Project/Area Number |
15H04009
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | Oita University |
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Principal Investigator |
KOGA Masafumi 大分大学, 大学院理工研究科, 教授 (60448545)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUTORI Akira 大分大学, 理工学部, 助教 (10190646)
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| Project Period (FY) |
2015 – 2017
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| Keywords | 光位相同期 / 光ホモダイン検波 |
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| Outline of Final Research Achievements |
We demonstrated signal light carrier automatic phase-lock operation by our newly developed microcomputer-controlled phase-lock loop circuit.
16 -QAM optical signal homodyne detection was demonstrated by extracting +/-π/4 and +/-3π/4-phase data symbols from 16-QAM signal, our decision-driven Costas loop for QPSK code achieved the LO light phase-locking to the signal carrier wave modulated at 16-QAM code.
We investigated approaches that can cancel nonlinear phase noise effectively for the phase-conjugate pair diversity transmission of 16-QAM WDM signals through multi-core fiber.
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| Free Research Field |
光ファイバ伝送
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