Fiber Collimators

Fiber collimators are devices that produce parallel light beams. However, perfect collimation is theoretically unattainable due to fundamental diffraction limitations in which the divergence angle θ≈λ/πD depends on the wavelength (λ) and beam diameter (D). Larger beam diameters reduce divergence, allowing greater working distances. Practical fiber collimators are optimized within a specific working distance and a diffraction-limited beam size. A typical beam profile is shown in the graph below. For multimode collimators, the performance depends on the mode field distribution. A similar profile laser is used during the fabrication and tests to be consistent with customer expectations. With over 20 years of expertise, we utilize unique fiber-end lenses, V-groove technologies, and specially-built measurement instruments to manufacture custom fiber collimators that achieve superior performance.