Motorized Variable Optical Delay Line
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Motorized Variable Optical Delay Line - 1

SPECIAL POLARIZATION INSTRUMENTS COMPONENTS APPLICATION ACCESSORIES GUIDE FAQS TIMING/DELAY MANAGEMENT MODULES POLARIZATION MANAGEMENT MODULES General Photonics Corporation 909.590.5473 http://www.generalphotonics.com -51- 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 0.3ìm (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: 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. Features: . Compact . High resolution . Low backlash . Low insertion loss . High stability . Highest delay to length ratio . Long delay: more than 560 ps Applications: . Optical Coherence Tomography (OCT) . Optical Fourier spectrum analysis . Optical interferometry . Delay generation and measurement . Optical time division multiplexing (OTDM) . Fiber sensors Tech Info: p. 152 FAQ: p. 179 Motorized Variable Optical Delay Line – VariDelay™ II TIMING/DELAY MANAGEMENT MODULES Operating Wavelength SM: 1260-1650 nm PM: 1310 or 1550 nm ±50 nm Optical Delay Range1 0 ~ 330 ps for 330 ps model 0 ~ 560 ps for 560 ps model Optical Delay Resolution 0.3 ìm or 1 fs per encoder count Optical Delay Accuracy ± 0.01 ps or ± 3 ìm Optical Delay Repeatability ± 0.01 ps or ± 3 ìm Insertion Loss 1.0 dB nominal Insertion Loss Variation ± 0.3 dB over entire range for 330 ps models ± 0.5 dB over entire range for 560 ps model PDL 0.1 dB Return Loss 50 dB Extinction Ratio > 18 dB for PM model Optical Damage Power Threshold 300 mW Power Supply 12 VDC / 1A max. Control Mode Panel keypad and RS-232 interface Display 2 x 16 character LCD Operating Temperature 0 ~ 40 °C Storage Temperature -20 ~ 60 °C Fiber Type Corning SMF-28 or Fujikura PM Panda fiber Dimensions (control unit/integrated version) 330 ps model: 1.6” (H) × 4” (W) × 7” (L) 560 ps model: 1.6” (H) × 4.4” (W) × 9” (L) Dimensions (mini controller board) 2.56” (L) × 2.56” (W) × 0.85” (H) Dimensions (optical head) 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)

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Motorized Variable Optical Delay Line - 2

INSTRUMENTS SPECIAL POLARIZATION ACCESSORIES COMPONENTS APPLICATION FAQS GUIDE TIMING/DELAY MANAGEMENT MODULES POLARIZATION MANAGEMENT MODULES - 52- General Photonics Corporation 909.590.5473 http://www.generalphotonics.com Typical Performance Data: Figure 1. Insertion loss vs. optical delay. Dimensions: (Representative drawings: 560 ps version) Optical head: Integrated version/control unit Ordering Information: MDL — 002 — — — — Wavelength: 13 = 1310 nm (PM) 15 = 1550 nm (PM) 35 = 1310 & 1550 nm (SM) Delay Range: 33 = 330 ps 56 = 560 ps Connector type: FC/PC, FC/APC SC/PC, SC/APC or NC =...

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