All Fiber Couplers (fiber ports) and Fiber Collimators have an adjustable focus and are available for different connector types (including FC connectors FC PC, FC APC as well as ST, LSA (compatible with fiber connectors type DIN, AVIO and AVIM) or SMA-905 (F-SMA)). Fiber couplers belong to the basic components of many fiber-optic setups. Light from an input fiber can appear at one or more outputs. Thorlabs' Adjustable Path Length Fiber-to-Fiber Couplers are ideal for fiber-based spectroscopic applications. Two off-axis parabolic (OAP) mirrors are used to collimate. A fiber optic connector is a mechanical device used to align and join optical fibers, enabling light to pass through with minimal loss. It helps networks grow and change when needed.