Tailored fiber optics solutions – optimal sensitivity when every photon counts

Castor Optics supports engineers and scientists redefining the limits of fiber optics systems. We deliver tailored solutions for optimal sensitivity in low-photon or high-noise conditions, enabling systems that sense farther, faster, or at lower concentrations. Applications include biomedical imaging, remote and spectroscopic sensing, and quantum optics.

Explore our advanced fiber optics solutions: double-clad fiber couplers, multimode circulators, low-loss mode-selective photonic lanterns, and fused fiber bundles. Visit us to meet our experts and discover how our technology can solve your most demanding challenges.