Computer Controlled Variable Ratio Coupler

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Computer-controlled variable-ratio coupler (CTDC) has an all-fiber construction and provides the tuning range of 0 – 100 % coupling ratio with negligible optical loss. A servo motor actuator facilitates fine-tuning coupling ratio through a motion controller. The computer-controlled version allows user-customized operation during the experiments.
It is based on evanescent field coupling using two side polished fibers where the coupling ratio is tuned by adjusting the core-to-core geometric offset. Customer specified fibers and operating wavelengths are available including single-mode fibers, polarization maintaining fibers and other specialty fibers.

Features

• Negligible loss

• Polished fiber coupler

• Tunable coupling ratio (0-100%)

• Available with various fiber types including SMF and PMF

• Controlled by the linear actuator

• Actuator & Driver included

• Compatible with 1⁄4’’-80 Threaded actuator ( 1⁄4’’-80 mounting bush)

• Available with body only option (without actuator)

• Very small size

Applications

• Quantum communication experiments

• Single-photon interference experiments

• Optical system testing

• Interferometry

• General laboratory experiments

• Optics education kits

Related Documents

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