Manual Fiber Polarization Controllers
Chapter 2: General Description
Page 6
1167-D02
2.2. Miniature 2-Paddle Fiber Polarization Controllers
The 2-paddle polarization controllers use two quarter-wave plates to transform
an arbitrary polarization state into any other polarization state. In this
configuration, however, the control of the polarization will be coupled between
the two paddles. These controllers allow complete control of the output
polarization state over a broad range of wavelengths (300 to 2100 nm).
The retardation per paddle is a function of loop number and the cladding
diameter of the fiber if the loop diameter is fixed. The retardation, in radians,
is plotted for 1, 2, 3, and 4 loops per paddle for a fiber with cladding diameters
of 80 µm and 125
μ
m (Figure 5 and Figure 6). Due to its small size, the
FPC020 cannot accommodate more than 4 loops per paddle.
