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PRODUCTS – FIBRE OPTICS – SINGLE MODE
FIBRE CHARACTERISTICS
The SMC Trainer – The Ultimate Single Mode Fibre Characteristics Training
System
The light propagation in optical fibres is well understood
by way of explaining the ray propagation with
respect to angle of light coupled into fibre and reflections
at the core-cladding boundary. But a complete
description of the modes is rather complex as it
involves hybrid electromagnetic fields. The wave nature
of electromagnetic radiation when guided, such as
microwaves in a wave-guide or light in an optical fibre,
results in phase shifts of the wavefronts at the reflective
boundaries that reinforce the transmission in discrete
number of paths or modes.
The Benchmark SMC Trainer provides a platform to show the propagating
modes in a single mode fibre.
| Features |
- Enables comprehensive training on Single-mode
fibre characteristics such as Normalized Frequency
(Vnumber), Modes, cut off wavelength, Mode field
diameter and Numerical aperture of a single mode
fibre
- Modes observation in two different single mode fibres having
different cut off wavelengths
- Precision XYZ positioner for coupling the free
space 650nm Laser light into Single-mode fibre
- Specially designed Mechanical setup for Mode field
diameter and NA measurement
- Comprehensive lab manual
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Top of Page
| Experiment Topics |
- Normalized frequency (V-number) calculation and
Modes observation in two different single mode fibres
- Mode field diameter & NA measurement of single
mode fibre
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Top of Page
| Specifications |
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SST-ST-PC-3-A |
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Cut-off wavelength |
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1260nm |
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Numerical aperture |
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0.12 |
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Mode field diameter |
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9.2nm@1310nm
10.4nm@1550nm |
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SST-ST-PC-3-C |
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Cut-off wavelength |
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600nm |
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Numerical aperture |
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0.12 |
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Mode field diameter |
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4.3nm@633nm
4.6@680nm |
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ST-PC-3 |
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Core diameter |
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50μm |
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Numerical aperture |
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0.2 |
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Rotation stage |
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Maximum angle of rotation |
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±10° |
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Angle steps |
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0.5° (approx) |
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Power Meter |
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Sensor type |
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Large area Si Photodetector |
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Optical input wavelength |
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600 – 1000 nm |
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Optical input power |
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-60 dBm to +3 dBm |
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Photodetector sensor area |
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3.8 x 3.8 mm |
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LD Unit |
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Source |
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LD |
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Lasing Wavelength |
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650nm (typ) |
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Threshold current |
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30mA (typ) |
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Maximum current |
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55mA |
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Optical output connector |
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Collimating lens |
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Optical output Power |
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3mW (max) |
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LD Driver |
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Possible modes of Operation |
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Forward bias |
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Bias Control |
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Potentiometer |
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Power supply connectors |
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DIN – DIN cable |
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Reflectivity |
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90% – 95% (typ) |
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LD unit Interface connector |
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5x2 Header |
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*Specifications subject
to change without notice
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For more information / downloads follow the links in the right-hand panel
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