VDL-001 Manual Variable Optical Delay Line

The VDL-001 family of manual variable optical delay lines provides optical path length adjustment of up to 600 ps in single-pass configuration.

The VDL-001 is a fiber coupled delay line with the delay adjustment path in free space. The delay is adjusted by manually turning a handle on one end of the device, and position is read from a vernier scale on the side. The delay line is available with either single mode or PM fiber pigtails.

Key Features

  • Long delay range
  • Easy to use
  • Easy to read scale
  • Compact

Specifications

Center wavelengths (λc )

SM, single pass: 1310/1550 dual window, 1060, or 840nm

SM, double pass: 1310 or 1550nm
PM, single pass: 1310, 1550, 1060, or 840nm
Wavelength range
λc ±50nm
Optical delay range
Single-pass: 330 ps or 600 ps
Double-pass: 1200 ps
Readout scale resolution
0.05mm
IL
1.0 dB nominal (1310/1550nm single pass)
1.5 dB nominal (840nm or 1060nm single pass)
1.5 dB nominal (1310 or 1550nm double pass)
IL variation over delay range
±0.3 dB (330 ps model)
±0.5 dB (600 ps model)
±0.7 dB (1200 ps model)