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
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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
- Experiment Topics
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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
LP01 LP11 LP22 LP02 - Specifications
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Specifications
SST-ST-PC-3-A Cut-off wavelength 1260nmNumerical aperture 0.12Mode field diameter 9.2nm@1310nm
10.4nm@1550nmSST-ST-PC-3-C Cut-off wavelength 600nmNumerical aperture 0.12Mode field diameter 4.3nm@633nm
4.6@680nmST-PC-3 Core diameter 50μmNumerical aperture 0.2Rotation stage Maximum angle of rotation ±10°Angle steps 0.5° (approx)Power Meter Sensor type Large area Si PhotodetectorOptical input wavelength 600 – 1000 nmOptical input power -60 dBm to +3 dBmPhotodetector sensor area 3.8 x 3.8 mmLD Unit Source LDLasing Wavelength 650nm (typ)Threshold current 30mA (typ)Maximum current 55mAOptical output connector Collimating lensOptical output Power 3mW (max)LD Driver Possible modes of Operation Forward biasBias Control PotentiometerPower supply connectors DIN – DIN cableReflectivity 90% – 95% (typ)LD unit Interface connector 5x2 Header*Specifications subject to change without notice
- List of Items
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List of Items
FOSM-D600 LD Driver - 1 no FOSM-U600 LD Unit - 1 no Fibre Optic power meter with remote PD - 1 no Rotation Stage with mounting post & XYZ positioner setup - 1 no XYZ positioner with mounting post setup Single mode & multimode patch cords - 1 no SST-ST-PC-3-A - 1 no SST-ST-PC-3-C - 1 no ST-PC-3 - 1 no - Ordering Information
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Ordering Information
- SMC trainer