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Few-mode fiber, splice and SDM component characterization by spatially-diverse optical vector network analysis.
Optics Express
|October 19, 2017
Summary
Spatially diverse optical vector network analysis is crucial for space division multiplexing (SDM) systems. This study characterizes an SDM multiplexer, revealing how fiber splices significantly impact performance and system capacity.
Area of Science:
- Optical communications engineering
- Photonics and optical devices
Background:
- Space division multiplexing (SDM) is essential for increasing optical communication capacity.
- Accurate characterization of SDM components and systems is vital for performance optimization.
Purpose of the Study:
- To demonstrate spatially diverse optical vector network analysis for SDM component and system characterization.
- To experimentally analyze a 108-channel photonic lantern spatial multiplexer coupled to a 36-core 3-mode fiber.
Main Methods:
- Utilizing spatially diverse optical vector network analysis for comprehensive characterization.
- Extracting full impulse response and complex transfer function matrices.
- Analyzing insertion loss (IL) and mode-dependent loss (MDL) data.
Main Results:
- Successfully characterized a 108-channel photonic lantern spatial multiplexer and a 36-core 3-mode fiber.
- Quantified insertion loss (IL) and mode-dependent loss (MDL).
- Identified significant mode-mixing caused by fiber splices in few-mode multi-core fibers.
Conclusions:
- Fiber splices introduce substantial mode-mixing, impacting system IL and MDL.
- The impact of fiber splices on mode-mixing is non-negligible and must be considered in SDM system capacity analysis.
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