Miniature Motorized Optical Variable Delay Line
General Photonics’ motorized variable optical delay line provides low cost, precision optical path length adjustment and delay scanning functionality. This addition to the MDL product line is specifically designed for OEM applications that require continuous scanning capability and a small footprint. The standard device has a delay range of 100 ps. An internal mirror can also be installed to cause light to double pass the device, doubling the delay range. A stepper motor and two position sensors ensure precise delay control. Low insertion loss and high reliability make this device ideal for integration in optical coherence tomography (OCT) systems, network equipment and test instruments for precision optical path length control or timing alignment.A mini controller board is available as an accessory.
Applications:
Optical coherence tomography (OCT)
Optical Fourier spectrum analysis
Optical interferometry
Delay generation & measurement
Optical time division multiplexing (OTDM)
Fiber sensors
Unique Features:
Compact
Low insertion loss
High stability
High reliability
Low cost
Specifications
Operating Wavelengths2
SM: 840 ± 50nm, 1060 ±50 nm, 1260-1650 nm
PM: 840, 1060, 1310 or 1550 nm ± 50 nm
Optical Delay Range3
0 to 100 ps, single-pass
Optical Delay Resolution
30 µm, single-pass at maximum speed
Optical Delay Accuracy
± 40 µm, single-pass at maximum speed
Optical Delay Repeatability
± 40 µm, single-pass at maximum speed
Insertion Loss1
1 dB
Insertion Loss Variation1
± 0.3 dB over entire range
PDL1
0.15 dB for SM fiber
Return Loss1
55 dB
Extinction Ratio
> 18 dB for PM model
Actuation Speed
50 ps/s (single-pass) max.
Optical Damage Power Threshold
100 mW
Electrical Interface
2-phase stepper motor drive signal
2 sensor connections
Operating Temperature
0°C to 50°C
Storage Temperature
−20°C to 60°C
Fiber Type
840nm: HI780 or PM Panda
1060nm: HI1060 or PM Panda
Notes:1.Specifications in table apply for a single-pass device without connectors,measured over 1310 ± 50 nm or 1550 ± 50 nm at 23±5°C. The output pigtail can also be replaced with a Faraday mirror to create a double pass device with a total range of 200 ps. Specifications may be different for double pass devices or for wavelengths other than 1310 or 1550nm.
2.Other wavelengths available upon request. Contact General Photonics for details.
3.Double pass device has 200 ps delay range. Since input and output signals travel on the same pigtail, a circulator or PBS may be necessary to separate input and output signals for some applications. Double pass not available for 840 or 1060nm.
Ordering Information:
Configuration Notes:
1. Wavelength: 35 option (dual-window 1310/1550nm) is available only for SM single-pass devices. PM or double-pass devices are single-window (e.g. 1310 or 1550nm) only.
2. Double-pass only available with SM fiber.
3. Double-pass not available for 840 or 1060nm.
商品属性 [波长] SM: 840 ± 50nm, 1060 ±50 nm, 1260-1650 nm PM: 840, 1060, 1310 or 1550 nm ± 50 nm [光纤类型] 840nm: HI780 or PM Panda 1060nm: HI1060 or PM Panda