Miniature Motorized Optical Variable Delay Line MDL-002
General Photonics’ motorized variable optical delay line provides precision optical path length adjustment of up to 560 ps, single-pass. Driven by a DC motor with an integrated encoder, the MDL-002 has a resolution of less than 0.3μm (1 fs). In addition, its advanced motion design guarantees longevity for long-term continuous operation. 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. The MDL-002 is available in three configurations: 1) an integrated unit for use as a bench-top instrument for laboratory applications, 2) with the optical head and control unit separated for easy incorporation into other equipment, and 3) an OEM version with a miniature controller board. All three versions can be remote controlled by a PC or a micro-processor through an RS-232 interface. The delay line is available with either single mode or PM fiber pigtails.
Applications:
Optical coherence tomography (OCT)
Optical Fourier spectrum analysis
Optical interferometry Delay generation &measurement
Optical time division multiplexing (OTDM)
Fiber sensors
Unique Features:
Compact
High resolution
Low backlash
Low insertion loss
High stability
Long delay range
Specifications
Operating Wavelength2
SM: 1260-1650 nm
PM: 1310 or 1550 nm ± 50 nm
840 ± 50nm or1060 ± 50nm
Optical Delay Range3,4
0 ~ 330 ps (single pass model)
0 ~ 560 ps (single pass model)
0 ~ 1120 ps (double pass model)
0 ~ 330 ps (single pass model)
0 ~ 560 ps (single pass model)
Position Accuracy5
±3 µm (single pass)
±6 µm (double pass)
±3 µm (single pass)
Position Repeatability5
±3 µm (single pass)
±6 µm (double pass)
±3 µm (single pass)
Insertion Loss1
1.0 dB nominal (single pass)
1.5 dB nominal (double pass)
1.5 dB nominal (single pass)
Insertion Loss Variation1
±0.3dB entire range (330 ps)
±0.5dB entire range (560 ps)
±0.7dB entire range (1120 ps)
±0.3dB entire range (330 ps)
±0.5dB entire range (560 ps)
PDL1
0.1 dB (SM fiber)
0.2 dB (SM fiber)
Optical Delay Resolution
0.3 µm or 1 fs per encoder count (single pass)
0.6 µm or 2 fs per encoder count (double pass)
Return Loss1
50 dB
Extinction Ratio
> 18 dB for PM model
Optical Damage Power Threshold
300 mW
Power Supply
12VDC / 1A max.
Control Mode6
Panel keypad and RS-232 interface
Display6
2 x 16 character LCD
Operating Temperature
0°C to 40°C
Storage Temperature
−20°C to 60°C
Fiber Type
SMF-28 or PM Panda
HI780 or PM Panda (840 nm)
HI1060 or PM Panda (1060 nm)
Dimensions (Control unit/ integrated version)
330 ps model: 7” (L) × 4” (W) × 1.6” (H)
560 ps or 1120 ps models: 9” (L) × 4.4” (W) × 1.6” (H)
Dimensions (Optical head)
330 ps model: 5.20” (L) × 1.46” (W) × 0.7” (H)
560 ps or 1120 ps models: 6.18" (L) × 1.46” (W) × 0.7” (H)
Dimensions (OEM board)
2.56” (L) × 2.56” (W) × 0.85” (H)
Notes:
1. Values in table are valid over an 840, 1060, 1310, or 1550 ± 50nm range for a device without connectors at 23±5°C.
2. Other wavelengths available upon request. Contact General Photonics for details.
3. The 1120 ps model is a double-pass device. Input and output signals travel on the same pigtail. A circulator or PBS can be used to separate input and output signals.
4. Double-pass versions not available for 840 or 1060nm.
5. Accuracy and repeatability specifications given for mechanical position of reflector at static position setting.
6. For model with standard control unit. OEM board has no display and is controlled by RS-232 only.
Typical Performance Data
Dimensions: (Representative drawings: 560 ps version, in inches)
Ordering Information:
Configuration Notes:
1. For SM pigtails, the default configuration is 3mm jacketed. For PM pigtails, the default configuration is 900μm loose tube jacketed.
2. Wavelength: 35 option (dual window 1310/1550nm) is available only for SM single-pass devices (330 and 560 ps). PM or double pass devices are single-window (e.g. 1310 or 1550nm) only.
3. Double-pass only available with SM fiber.
4. Double-pass not available for 840 or 1060nm.
商品属性 [波长] SM: 1260-1650 nm PM: 1310 or 1550 nm ± 50 nm [光纤类型] SMF-28 or PM Panda