Parametric Optimization of Fiber-Coupling Lens

Abstract


Fibers are some of the most versatile components in modern optics. One of their most valued characteristics is their capacity to transport optical energy with very low losses across vast distances (even several kilometers). On the flip side, coupling light into a fiber in a way that achieves as high an efficiency as possible is often a very delicate endeavor: among other things, the fiber coupling lens must be well designed to ensure that the focal spot matches the propagating modes of the fiber as closely as possible. With the fast physical optics simulation and the parametric optimization in VirtualLab Fusion, we show the design of a plano-convex lens with a conical surface for the task of coupling light into a single-mode fiber.

VirtualLab Fusion Configuration

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Are you interested in further reading?

Use Case

Optimal Working Distance for Coupling Light into Single-Mode Fibers

In this example, we select one commercially available lens and show how to find the optimal working distance to obtain maximum fiber coupling efficiency by using field tracing.

Use Case

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 are evaluated by using the overlap integral.

Tutorial

Introduction to the Parametric Optimization Document

Three local and one global optimization algorithm are provided. This Tutorial introduces the associated Parametric Optimization document.