Simulation of Long-Period Fiber Gratings Formed with Helical Fiber
应用文章
This application note shows how to simulate long-period fiber gratings (LPGs) using a helically twisted fiber instead of traditional UV-inscribed gratings. Using BeamPROP, a full 3D model of helical fiber is built to study how the core mode couples into cladding modes based on the pitch of the helix.
Learn how this simulation tracks power transfer between modes and visualizes how the field evolves along the fiber. The Multi-Variable Optimization and Scanning Tool (MOST) is used to scan parameters like wavelength and pitch and makes it easy to study spectral response and optimize device design.
BeamPROP provides a powerful way to analyze these structures with accuracy, capturing multimode effects that other models often miss. This approach is well-suited for designing optical sensors used in fields like aerospace, automotive and healthcare.