Motorized Variable Optical Delay Line ? VariDelay? II0 pages

TIMING/DELAY
MANAGEMENT MODULES

General Photonics’ motorized variable optical delay line provides precision
optical path length adjustment of up to 560 ps. Driven by a DC motor with an
integrated encoder, the MDL-002 has a delay resolution of less than 0.3µm
(1 fs), and an extremely low backlash of less than 8 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.

Specifications:

Insertion Loss Variation
PDL
Return Loss
Extinction Ratio
Optical Damage Power Threshold
Power Supply
Control Mode
Display
Operating Temperature
Storage Temperature
Fiber Type
Dimensions (control unit/integrated version)
Dimensions (mini controller board)
Dimensions (optical head)

SPECIAL POLARIZATION
COMPONENTS

Optical Delay Resolution
Optical Delay Accuracy
Optical Delay Repeatability
Insertion Loss

ACCESSORIES

Optical Delay Range1

SM: 1260-1650 nm
PM: 1310 or 1550 nm ±50 nm
0 ~ 330 ps for 330 ps model
0 ~ 560 ps for 560 ps model
0.3 µm or 1 fs per encoder count
± 0.01 ps or ± 3 µm
± 0.01 ps or ± 3 µm
1.0 dB nominal
± 0.3 dB over entire range for 330 ps models
± 0.5 dB over entire range for 560 ps model
0.1 dB
50 dB
> 18 dB for PM model
300 mW
12 VDC / 1A max.
Panel keypad and RS-232 interface
2 x 16 character LCD
0 ~ 40 °C
-20 ~ 60 °C
Corning SMF-28 or Fujikura PM Panda fiber
330 ps model: 1.6” (H) × 4” (W) × 7” (L)
560 ps model: 1.6” (H) × 4.4” (W) × 9” (L)
2.56” (L) × 2.56” (W) × 0.85” (H)
330 ps model: 0.7” (H) x 1.46” (W) × 5.20” (L)
560 ps model: 0.7” (H) x 1.46” (W) x 6.18” (L)

Note: Values are referenced without connectors.
1. The output pigtail on either the 330 ps or 560 ps model can be replaced with an internal Faraday mirror to create a double pass device with a total
range of 660 ps or 1120 ps, respectively. Contact General Photonics for details.

Applications:

. Compact
. High resolution
. Low backlash
. Low insertion loss
. High stability
. Highest delay to length ratio
. Long delay: more than 560 ps

. Optical Coherence Tomography (OCT)
. Optical Fourier spectrum analysis
. Optical interferometry
. Delay generation and measurement
. Optical time division multiplexing (OTDM)
. Fiber sensors

Tech Info:t
FAQ:t

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FAQS

Features:

APPLICATION
GUIDE

Operating Wavelength

INSTRUMENTS

Motorized Variable Optical Delay Line – VariDelay™ II

POLARIZATION
MANAGEMENT MODULES

T I M I N G / D E L AY M A N A G E M E N T M O D U L E S

General Photonics Corporation 909.590.5473 http://www.generalphotonics.com -51-