IdealPhotonics' optogenetic 2x2 coupler/beam splitter is a four-port fiber optic device specifically designed for neuromodulation. It uses fused taper or micro-optics technology to distribute the input optical signal to dual output channels at a specific splitting ratio (e.g., 50:50), while simultaneously supporting inverse fluorescence signal collection. This enables synchronous integration of optical stimulation and signal detection, making it suitable for multi-brain region interaction studies.Specifications include splitting ratio accuracy (e.g., 50:50 ± 5%) and insertion loss.