N7784B

Agilent N7784B High Speed Polarization Controller Data Sheet Figure 1. N7784B-001 bench-top mainframe Introduction The Agilent N7784B polarization controller contains a high-speed polarization controller plus microcontrollerbased driving circuitry. This unit can operate in various modes. As a polarization stabilizer, it provides a stable output state of polarization (SOP) even with fluctuations and drifts of the input SOP as occurring for example through temperature drift and mechanical settling processes. The stabilized output signal is guided in a polarization maintaining fiber (PMF). Alternatively, an external electrical feedback signal can be provided for stabilizing the SOP. As a synchronous scrambler, the device switches the www.DataSheet4U.com SOP of the output signal in a random (pseudo) way. As an SOP switch, the N7784B allows switching the internal waveplates to user definable angles with very high speed and repeatability. As traditional scrambler the N7784B varies the output SOP smoothly in a random/pseudo random way. The unit does not contain any moving parts and therefore is robust and withstands even rough environmental conditions. All above-mentioned applications of the N7784B are supported by a PC software package. ● PC-based application software comes with this instrument. ● Other instrument drivers for various software interfaces are available. Switching of the SOP occurs within a few microseconds. The SOP is stable for a predefined time until it again switc...