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Optical Delay Line

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IDIL Fibres Optiques provides a wide range of tunable optical delay lines.

Manual optical delay lines tunability depends on a micrometric screw which allows a higher than 0.1 picoseconds resolution. In fact, we propose a tunability that ranges between a few picoseconds to hundred of picoseconds, according to the running of the translation stage.

The translation stage can be motorized with a precision better than 1 µm and easily controlled by a computer via an USB interface.

The delay line can provide precision optical path variation of more than 50 mm.

Furthermore, packaging dimensions vary in accordance with customers’ requirements regarding delay values.

  • High resolution < 0.1 ps
  • Low insertion Loss < 1 dB
  • High delay and loss stability
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Custom ODL ODL 25 ODL 50
Travel range Upon request 25 mm 50 mm
Travel mechanism Manual or motorized Manual micrometer Manual micrometer
Delay range From 1 ps to hundred ps 80 ps 150 ps
Delay resolution Depend of the total delay 1.6 ps per turn 1.6 ps per turn
Resolution ≤ 0.1 ps
Wavelength UV; IR; Visible
Max. Insertion loss ≤ 1 dB (0,6 dB typical) ≤ 1 dB ≤ 1 dB
Loss variation over travel Depend on the total travel ≤ 1 dB ≤ 1 dB
Return loss 45 dB (typical) ≥ 45 dB ≥ 45 dB
Fiber type SMF; PMF ; MMF
Connectors FC; LC; SC; SMA; ST; MU; E2000; other
Buffer 900 µm or 2.8 mm
Dimensions 30 x 80 x 70 mm (with a 50 ps delay) 100 x81.4 x 40 mm 280 x 200 x 76 mm
Packaging Slot, rack, patch cord
Operating temperature From -5°C to +65°C
Storage temperature From -40°C to +85°C
Optical power handling Upon request
Control mode (motorized) USB, PC interface NA NA
Contents (motorized ODL) User guide, calibration data, USB cable, power supply, integrated collimator, input and output fiber
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  • Telecommunications
  • Fiber optic instrumentation
  • Interferometric sensors
  • Coherent detection systems
  • Optical Fourrier spectrum analysis
  • Optical Time Division multiplexing (OTDM)
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Fiber Optic Delay Lines (ODL) consist of controlling the delay through the device by varying the distance the light travels between the input and the output fiber collimator. IDIL expertise in single-pass ODL allows a higher than 0.1 ps resolution compared to other supplier. Double-pass are available on request.

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