PL100 Series Features
- Wavelength Range: 1510 to 1640 nm
- Input Independent Polarization Control and Locking
- Stand-alone Operation without PC
- Excellent Accuracy
- SOP: ±0.25° on Poincaré Sphere
- DOP: ±0.25 %
- SOP Scrambling (PL100S)
- Low Insertion Loss: <1.1 dB
- USB Control
The PL100 Series State of Polarization (SOP) Locker is a stand-alone inline deterministic polarization controller. These benchtop devices offer accurate high-speed low-loss control of the output polarization state independent of the input SOP. The SOP locker can be used as a stand alone device or it can be controlled by a computer through a USB port using the included USB cable and software drivers. Drivers for the LabVIEW™, LabWindows/CVI™, MSVC, and Borland C programming environments are included. Similar to the DPC5500 Deterministic Polarization Controller, the PL100 series SOP Locker controls the output polarization using a closed-loop system consisting of several piezo-electric fiber squeezers, a fast in-line polarimeter, and a digital signal processor (DSP). For low-power signals, there is a precision mode that increases the averaging time, which allows the system to maintain precise control over the output SOP. Also, a button on the front panel toggles the active control of the output polarization on/off. Note that when the active control of the output SOP is off, the output polarization will be dependent on the input polarization. The PL100 series have a built-in calibration routine that can be initiated via a button on the front panel.
PL100S Specific Information: The output polarization is set by using the up, down, right, and left buttons on the front panel. Pressing one of these buttons results in a 1° change in the output SOP along a longitudinal (up/down buttons) or latitudinal (right/left buttons) grid superimposed on the Poincaré Sphere. The SOP of the output light is stored in memory so that when the PL100S is turned off for some period of time and then turned back on the output SOP will not change. An additional operating mode on the PL100S produces a pseudo-depolarized output; in this mode, the polarization of the output light is rapidly changed such that all SOPs have an almost equal probability of occurring at any particular instant in time.
PL100P Specific Information: The PL100P is designed for use with a PM output fiber and as a result the SOP of the output light is linear when the PL100P is locked. A button on the front panel toggles the orientation of the linear polarized output light between the slow- and fast-axis of the PM fiber.