Precision Optical Fiber Delay Line

Features

  • Delay of line customized to customer requirements
  • Use of master class optical connectors, optical fiber with low attenuation and precise winding technology guarantees low insertion loss of line
  • Extremely high delay accuracy
  • Available in an acoustic and vibration absorbing version

Applications

  • Laser spectroscopy
  • Test and measurement system
  • Quantum optics
  • Optoelectronic oscillators
  • Optical gyroscopes

Technical parameters

Optical fiber parameters 1

ParameterUnitValue
Fiber typeG.657A2 2
Attenuation @1310 nmdB/km≤0.35
Attenuation @1383 nmdB/km≤0.34
Attenuation @1490 nmdB/km≤0.23
Attenuation @1550 nmdB/km≤0.21
Attenuation @1625 nmdB/km≤0.23
Mode filed diameter (MFD) @1310 nmµm8.8 ± 0.4
Mode field diameter (MFD) @1550 nmµm9.8 ± 0.5

1. Full datasheet of optical fiber available on request

2. Other type of fiber Attenuation @1310 nmon request

 

 

 

Optical connectors parameters

ParameterUnitValue
Maximum insertion loss ILdB≤ 0.1
Minimum return loss RLdB≥ 65 (APC), ≥ 55 (UPC)
Concentricityµm≤ 0.3
Longitudinal angle of the ferrule hole≤ 0.2
Apex offsetµm≤ 30
Fiber heightnm-30 – +30
Radius of curvaturemm7-12 (APC), 10-20 (SC UPC), 7-25 (LC UPC)
Polishing angle8 ± 0.3 (APC), 0 ± 0.2 (UPC)

Measure at wavelength 1310, 1550 nm

 

 

 

Standard specifications 2*

Nominal length [km]Maximum insertion loss [dB] 3*Typical delay [µs]
10.415
20.6210
51.2525
102.3050
153.3575
204.40100
255.45125
5010.70250

Delay tolerance  0.005 %

2. Other lengths available on request

3. Insertion loss with optical connectors at 1550 nm wavelength