VDL-002 Fiber Optic Delay Line

840-1650 nm; Delay Range 0-250 ps; RL 55 dB; Fiber Type SMF-28, HI780, HI1060, PM Panda; IL 1.0 dB; PDL 0.1 dB

Lunas’ VDL-002 variable fiber optic delay line module is approximately half the volume of the VDL-001 unit . Path length of the VDL-002 delay line is up to 250 ps, compared to the maximum delay of 1,200 ps in the larger VDL-001.

A single VDL-002 device can be used for any data rate, simplifying inventory management. With a footprint of only 78 × 22 × 15 mm for a delay range of 100 ps, the device can be conveniently integrated into network modules, test instruments and OCT equipment for precision optical path length control or timing alignment.

An internal mirror can be installed to cause light to double pass the device, doubling the delay range. The patent-pending design makes hermetically sealed packaging possible and enables Telcordia qualification when required.

Finally, a locking mechanism is provided for locking the delay at a permanent position. The VDL-002 generally comes with single mode (SM) or polarization maintaining (PM) fiber pigtails per customer requirement.

Key Features:

• Compact Size: 56/80 × 37 × 18 mm
• Insertion Loss (IL): 1.0 dB Nominal
• Variation of Insertion Loss: ±0.3 dB Over Entire Range
• Flexible Options
• Operating Wavelength: 840, 1060, 1310, 1550, 1260 to 1650 nm
• Optical Delay Range: 0 to 100 ps (3 cm), 0 to 250 ps (7.5 cm) Continuous
• Internal Mirror Option for Doubling the Range
• Delay Stability: 0.15 ps
• Zero Point Delay Offset: 180 ps
• Polarization Dependent Loss (PDL): 0.1 dB (SM Model)
• Return Loss (RL): 55 dB
• Extinction Ratio: >18 dB (PM Model)
• Optical Power Damage Threshold: 300 mW
• Fiber Type: SMF-28, HI780, HI1060, PM Panda

Applications: Coherent Detection Systems; Optical Time Division Multiplexing (OTDM); Optical Coherence Tomography (OCT); Optical Interferometry; Optical Fourier Spectrum Analysis; Replacement for Variable RF Phase Shifters