Fiber Optical Phase Switch

SKU: NSPW

The NanoSpeed™ Series fiber optic phase switch is a two-port device that provides high phase-shift precision, low loss, fast response, and high optical power handling. These performance levels are achieved through a patented all-crystal design that switches between two optical paths regardless of polarization, without mechanical movement or organic materials, ensuring exceptional reliability and continuous operation. The phase shift is precisely controlled by passing or bypassing a passive waveplate, and the switch is intrinsically bidirectional—configurable for either polarization-independent or polarization-maintaining operation depending on the fiber type. Multiple switches can be cascaded and mounted on a single driver to provide a range of discrete phase-shift values.
Each NS Series switch is driven by 5V TTL control signals using a matched electronic driver optimized for specific repetition rates. The rise/fall time and operating frequency range depend on both the crystal properties and the driver design. Certain frequency bands may exhibit reduced response due to natural device resonances; therefore, every NS device is shipped pre-mounted on a tuned driver. The switches support arbitrary control timing with frequencies from DC up to the MHz range, and electrical power consumption scales with the operating repetition rate. A dual-stage configuration is available to further enhance extinction ratio and minimize crosstalk.