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Variable Optical Delay Line (VDL Series)

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Product Name: Variable Optical Delay Line (VDL Series)


The Optical Delay Line could be adjusted by manual lead screw or servo motor. Low insertion loss and high reliability make this device ideal for integration in optical coherence tomography system.


Specifications

Parameter

Unit

Value

Center Wavelength (λc)

nm

850, 1064, 1310

Operation Wavelength Range

nm

±50,  ±50,  ±60

Travel Mechanism

manual lead screw/servo motor

Optical Delay Range

mm

150 (continuous)

Zero Point Delay Offset**

mm

132

Readout Scale Resolution

mm

0.02

Insertion Loss

dB

1.5, 1.2, 1.2

Flatness over travel

 dB  0.7, 0.5, 0.3

Max. PDL

dB

0.1

Min. Extinction Ratio (for PM model)

dB

18

Min. Return Loss

dB

55

Max. Input Power

mW

300

Operating Temperature

  °C  0 to +40

Storage Temperature

  °C  -40 to +60

Fiber Type

   HI 780, HI 1060, SMF-28e+


*IL is 0.5 dB higher, RL is 5 dB lower and ER is 2 dB lower for each connector added, measured at center wavelength

**Absolute delay at 0 ps setting measured to the edge of the enclosure (excluding caps, boots, and pigtails).


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