The Differential Polarization Delay Lines from OZ Optics are Optical Delay Lines (ODL) that operate at a wavelength of 1550 nm. They have a delay range of ±50 ps and a delay resolution of 0.0027 ps. These optical delay lines provide a return loss of 60 dB and a maximum insertion loss of 1.2 dB. This series allows electronic control of polarization mode dispersion in optical networks by splitting the light within a fiber into orthogonal polarizations and then actively varying the time that one polarization travels compared to the other polarization before combining the two polarizations together again.

The Differential Polarization Delay Lines require a DC supply of 6-8 V and consume up to 180 mA of current. They can be controlled via an RS232 or TTL interface. This series is available in a package that measures 105 x 51 x 25 mm with 1 meter long tight-buffered 9/125 SM fibers that have an optical density of 0.9 mm and FC/APC connectors. They are ideal for PMD compensation in high-speed communications networks, PMD emulation, TDM bit alignment, interferometric sensors, and coherent telecommunications applications.