Used JDSU SB-SERIES SB Fiber Optic Switch

Programmable benchtop/rack-mount switches that can be controlled from front panel keys and numeric pad or via GPIB and serial RS232 interface. 

The JDSU SB and SC Series of Benchtop/Rack-mount Programmable Switches can be controlled using the front panel keys and a numeric pad or via GPIB and serial RS232 interface. The SB and SC series switches are available in three basic configurations.
C configuration: is a single common input model (SB, SC)
D configuration: provides simultaneous connection of a bank of input fibers to output fibers (SB, SC)
E configuration: allows for connecting any input to any output while other inputs/outputs are aligned to subsequent/adjacent channels. The switch is non-blocking in this mode and other inputs/outputs are aligned (SB, SC).
Operation of these switches is based upon the JDSU-proven expanded beam lens technology, which utilizes a precision stepper-motor to align optical channels. The
use of collimating lenses minimizes insertion loss (IL) and improves repeatability and performance. Internal temperature control of the switching mechanism ensures excellent operational stability.