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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
Published on: March 20, 2017
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Single-wavelength bidirectional 4-core MCF self-homodyne coherent link.
Applied Optics
|January 31, 2024
Summary
This study demonstrates a single-wavelength bidirectional self-homodyne coherent link using multicore fiber, achieving 480 Gbps data rates for data center interconnects.
Area of Science:
- Optical Communications
- Fiber Optics
- Coherent Transmission
Background:
- Future data center interconnects (DCIs) require higher capacity and efficient fiber utilization.
- Bidirectional transmission over multicore fiber (MCF) is a promising solution for increasing data rates.
Purpose of the Study:
- To propose and demonstrate a single-wavelength bidirectional self-homodyne coherent (SHC) link.
- To achieve high data transmission rates over MCF for short-reach optical networks.
Main Methods:
- Utilized a 4-core MCF with a 125 µm cladding diameter.
- Implemented dual-polarized 40 Gbaud 16-QAM signals and carrier multiplexing.
- Employed a low-cost DFB laser (1 MHz linewidth) for the SHC link.
Main Results:
- Achieved a 480 Gbps data transmission rate in each direction over a 12.8 km MCF link.
- Demonstrated successful bidirectional transmission at a single wavelength, eliminating the need for reconfigurable transceivers.
- Obtained bit error rates (BERs) below 5.5×10⁻⁴.
Conclusions:
- The proposed SHC link is a viable technology for future high-capacity DCIs.
- Single-wavelength operation and efficient core utilization offer a cost-effective solution.
- The approach can be scaled with higher baud rates to meet evolving network demands.
