OP1021 Launch Condition Analyzer System

OptoTest_OP1021
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The OP1021 Launch Condition Analyzer is a convenient and compact benchtop Nearfield and Farfield scanner for optical fibers.  Coupled with windows application OPL-LCA, the user can scan and easily plot both the Nearfield and Farfield patterns of any compatible fiber. In addition to comparing the Nearfield and Farfield patterns to standard launch templates, the Encircled Flux is calculated and compared to various IEC templates.

The optical interface of the instrument accepts all standard 2.5mm ferrules. Other connector sizes available upon request.

The OP1021 can be equipped with two internal LEDs with 850nm and 1300nm wavelengths. The internal 105/125µm, 0.22NA fiber allows for overfill testing in most applications.

Product Features

Nearfield

The Nearfield (NF) describes the optical power density on the surface of a radiating source or the end of a fiber.

The OP1021 complies with IEC 61280-1-4 specifications for a pinhole scanning mechanism to gather the nearfield distribution.  Using a microscope objective, the fiber endface is imaged onto a plane. A pinhole, 100µm in diameter, is situated in front of a detector on this plane and is mechanically scanned across the projected image to gather the nearfield distribution data.

The OP1021 has 3 software controlled positioners to allow for movement in all 3 spatial dimensions.  One allows for bringing the image into focus (z-axis), while two allow the system to scan the projected plane (x, y-axis) for centering purposes. With a +/-250µm effective scan range and a 0.1µm resolution, this nearfield scanner is capable of analyzing the majority of fiber endfaces and launches.

Farfield

The OP1021 conforms to the standards specified in TIA-455-177-B Technique 1 for measuring numerical aperture from the farfield plot.  The farfield scan in the OP1021 is performed by moving a 100µm core fiber along the semicircular arc formed by rotating the normal ray to the input fiber endface in a radial motion.  The receiver is a 100/250µm fiber that is placed approximately 5cm from the endface of the input fiber and can be rotated from -0.5 radians to +0.5 radians about the radial center.

The farfield launch measurement does illustrate the farfield launch profile of a fiber. With the farfield scan the numerical aperture of the fiber can be measured, given there is an overfilled launch condition.

Product Specs

Nearfield Analyzer
Measurement Scanning Range – 250μm to + 250μm
Scanning Resolution 0.1μm
Scanning Aperture 100μm
Receiver Sensitivity (at Optical Interface) +3dBm to -60dBm
Receiver Wavelength 850nm to 1700nm (or 450nm to 1100nm upon request)
Resolution, Optical Power 0.01dBm or 0.1%
Measurement Linearity, Relative Accuracy 0.05dB
Scanning Speed (Typical) 30 sec. depending on scanning resolution
Connector Interface Universal 2.5mm
Farfield Analyzer
Measurement Scanning Range -0.5 NA to +0.5 NA (-0.5rad to +0.5rad)
Scanning Resolution 2.2 mrad
Scanning Aperture 0.22 NA
Receiver Sensitivity (at Optical Interface) +3dBm to -60dBm
Receiver Wavelength 850nm to 1700nm (or 450nm to 1100nm upon request)
Resolution, Optical Power 0.01dBm or 0.1%
Measurement Linearity, Relative Accuracy 0.05dB
Scanning Speed (Typical) 10 sec. depending on scanning resolution
Connector Interface Universal 2.5mm
Internal LED (optional)
Wavelength 850nm and 1300nm
Optical Output Power typ. -13dBm into 105μm Fiber
Connector Interface fixed FC/PC
General Specifications
Data Interface USB 1.1 (or later) compatible data rate and interconnect
Operating Temperature Range 0ºC to 50ºC (32ºF to 122ºF)
Mechanical Dimension 19” Rack Standard (16.8 x 3.8 x 10 inch)
Power Supply Universal AC input: 90VAC to 264VAC, 43Hz.. 63Hz

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