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Full-duplex bidirectional data transmission link using twisted lights multiplexing over 1.1-km orbital angular
Shi Chen1, Jun Liu1, Yifan Zhao1
1Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China.
Scientific Reports
|December 1, 2016
Summary
We demonstrate full-duplex data transmission using twisted light multiplexing over a 1.1-km fiber. This orbital angular momentum (OAM) fiber link shows promising performance for bidirectional communication.
Area of Science:
- Optical Communications
- Photonics
- Telecommunications Engineering
Background:
- Orbital Angular Momentum (OAM) multiplexing offers a novel approach to increase data transmission capacity.
- Full-duplex communication enables simultaneous data transmission in both directions, enhancing spectral efficiency.
- Fiber optic links are crucial for high-speed data transfer, but capacity limitations remain a challenge.
Purpose of the Study:
- To investigate the feasibility and performance of full-duplex bidirectional data transmission using twisted light multiplexing.
- To evaluate the data transmission capabilities of Orbital Angular Momentum (OAM) modes over a kilometer-scale fiber link.
- To analyze crosstalk and optical signal-to-noise ratio (OSNR) penalties in a full-duplex OAM fiber system.
Main Methods:
- Utilizing OAM modes (OAM+1 and OAM-1) for downlink and uplink data streams.
- Employing 20-Gbit/s quadrature phase-shift keying (QPSK) modulation for signal encoding.
- Conducting transmission experiments over a 1.1-km OAM fiber link to assess performance metrics.
Main Results:
- Achieved full-duplex bidirectional data transmission with low mode crosstalk (< -15.2 dB) and full-duplex crosstalk (< -12.7 dB).
- Measured minimal OSNR penalties of approximately 2.4 dB (downlink) and 2.3 dB (uplink) at a bit-error rate (BER) of 2×10⁻³.
- Demonstrated favorable data transmission performance for twisted light multiplexing in a km-scale OAM fiber.
Conclusions:
- The proposed full-duplex twisted light multiplexing technique is effective for bidirectional data transmission over OAM fiber.
- The system exhibits robust performance with acceptable crosstalk and OSNR penalties, suitable for practical applications.
- This study highlights the potential of OAM multiplexing for enhancing future high-capacity optical communication networks.
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