Hybrid Approach for Generating High-order QAM

2014 Fiscal Year Final Research Report

• Project/Area Number: 25709031
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Communication/Network engineering
• Research Institution: Tokai University
• Principal Investigator: LU Guo-Wei 東海大学, 創造科学技術研究機構, 准教授 (30599709)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 情報通信工学 / コヒーレント光通信 / 多値光変調 / 光変調器

Outline of Final Research Achievements

The research work mainly focuses on the realization and application of flexible high-order Quadrature-Amplitude Modulation (QAM) transmitter in optical communication systems. In future high-speed elastic optical networks, flexible high-order QAM transmitter plays an important role to adaptively generate different high-order QAM signals with simply changing the configurations and sharing the same optical hardware. We have successfully verified the feasibility of our proposed flexible high-order QAM transmitter and demonstrated the application of such transmitter in optical communication systems. In details, the achievement of the research work mainly includes the following four parts: 1) realization of flexible high-order QAM transmitter; and experimental demonstrations of 2) high-performance wavelength conversion for high-order QAM signals, 3) pump-phase-noise-free wavelength exchange for high-order QAM signals, and 4) pump-phase-noise-free Multicast for high-order QAM signals.

Free Research Field

情報工学