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Amplifying Orbital Angular Momentum Modes in Ring-Core Erbium-Doped Fiber
Jun Liu1, Shi Chen1, Hongya Wang1
1Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074 Hubei, China.
Research (Washington, D.C.)
|March 13, 2020
Summary
Researchers developed an orbital angular momentum (OAM) fiber amplifier using a ring-core erbium-doped fiber (RC-EDF). This amplifier enables stable, long-haul OAM mode transmission for increased optical communication capacity.
Area of Science:
- Optical Communications
- Fiber Optics
- Photonics
Background:
- Orbital Angular Momentum (OAM) multiplexing is crucial for increasing optical communication capacity.
- Long-haul OAM transmission requires in-line fiber amplifiers.
- Ring-core fibers (RCFs) offer stable OAM mode propagation.
Purpose of the Study:
- To demonstrate an in-line OAM fiber amplifier.
- To utilize a fabricated ring-core erbium-doped fiber (RC-EDF) for OAM amplification.
- To evaluate the amplifier's performance in OAM multiplexing systems.
Main Methods:
- Fabrication of a ring-core erbium-doped fiber (RC-EDF).
- Construction and characterization of an OAM fiber amplifier using the RC-EDF.
- Demonstration of the amplifier in an OAM multiplexing system with QPSK and QAM signals.
Main Results:
- Successful amplification of two OAM modes across four wavelengths.
- Favorable performance demonstrated for the RC-EDF-assisted OAM fiber amplifier.
- Validation of the amplifier for data-carrying OAM and wavelength-division multiplexing.
Conclusions:
- The developed RC-EDF-assisted OAM fiber amplifier supports stable long-haul transmission.
- This technology offers new possibilities for capacity scaling in fiber-optic communications.
- The amplifier is suitable for advanced modulation formats like QPSK and QAM in OAM systems.
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