The VDL-002 series of variable optical delay lines are approximately half the volume of the VDL-001 units. Path length of VDL-002 models is up to 250 picoseconds (compared to maximum delay of 1200 picoseconds in the larger VDL-001)

A single device can be used for any data rate, simplifying inventory management. With a footprint of only 0.72” x 1.46” x 2.2” for a delay range of 100 ps, the device can be conveniently integrated into network modules, test instruments, and OCT equipment for precision optical path length control or timing alignment. An internal mirror can be installed to cause light to double pass the device, doubling the delay range. The patent-pending design makes hermetically sealed packaging possible and enables Telcordia qualification when required.

Finally, a locking mechanism is provided for locking the delay at a permanent position. The VDL-002 generally comes with single mode or PM fiber pigtails per customer requirement.