Manual Variable Optical Delay Line

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Reference number: GPC-VDL-002

The VDL-002 is a miniaturized variable optical delay line designed specifically for OEM applications. With a delay range of up to 250 ps, this device is a superior replacement for the variable RF phase shifters inadequately adapted from the RF/wireless field for fiber optic communications.


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Miniature Manual Variable Optical Delay Line - VariDelay™ I

It is especially useful in coherent detection systems for adjusting phase or delay differences between signals. The VDL-002 eliminates the VSWR problems of RF phase shifters for high frequency and broadband signals, especially at 40 and 100Gbps. A single device can be used for
any data rate, simplifying inventory management.


  • Compact size
  • High resolution
  • Low insertion loss
  • High stability
  • Longevity


  • Coherent detection systems
  • Optical time division multiplexing (OTDM)
  • Optical coherence tomography (OCT)
  • Optical interferometry
  • Optical Fourier spectrum analysis
  • Fiber sensors