Motorized Variable Optical Delay Line

SICART'’s Motorized Variable Optical Delay Line provides precision optical path length adjustment of up to 1200 ps. Driven by a step motor, the MDL has a delay resolution of less than 10 µm (34 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 in

● Low insertion loss

● High stability

● Highest delay to length ratio

● Long delay: up to 1600 ps

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Parameters

● Low insertion loss

● High stability

● Highest delay to length ratio

● Long delay: up to 1600 ps

Product Detail

Key Features	Applications
lCompact	lOptical Coherence Tomography (OCT)
lHigh Resolution	lOptical Fourier Spectrum Analysis
lLow Insertion Loss	lOptical Interferometry
lHigh Stability	lDelay Generation and Measurement
lLong Delay: up to 1200 ps	lOptical Time Division Multiplexing (OTDM)

Specifications (300 - 1200 ps)

Parameter	Unit	Value
Center Wavelength (λc)	nm	1060, 1310 or 1550
Operation Wavelength	nm	λc ± 50
Travel Range	mm	45 x 2	90 x 2	180 x 2
Optical Delay Range	ps	300	600	1200
Zero Point Delay Offset**	ps	≈ 440
Optical Delay Resolution	-	10 μm or 34 fs Per Encoder Count
Max. Insertion Loss	dB	1.0	1.2	1.8
Max. Insertion Loss Variation	dB	0.2	0.5	0.6
Max. PDL	dB	0.15
Min. Extinction Ratio (for PM Model)	dB	20
Min. Return Loss	dB	55
Max. Optical Power Handling (Continuous Wave)	mW	300
Electrical Interface	-	2 - Phase Stepper Motor Drive Signal
Electrical Interface	-	2 Sensor Connections
Operating Temperature	°C	-5 to +70
Storage Temperature	°C	-20 to +85
Fiber Type	-	Singlemode or PM Panda Fiber