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Evaluation of Fiber Coupling Lenses and Their Design

[Friday, 29. June 2018]

 

How to ensure a high-efficient coupling of light into optical fibers is an important question in all fiber-related applications.

In VirtualLab, the focal field behind the coupling lens can be easily calculated with the fast physical optics simulation engine, and by calculating the overlap integral, the fiber coupling efficiency can be evaluated. Additionally, with the parametric optimization, the lens parameter can be optimized for customized situations.

Parametric Optimization of Fiber Coupling Lens

With the parametric optimization in VirtualLab, the design of a fiber coupling lens with conical surfaces for efficient coupling into a single-mode fiber is presented.

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Comparison of Different Lenses for Fiber Coupling

For the task of coupling light into a single-mode fiber, two commercially available lenses are selected, and their performance evaluated using the overlap integral.

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