APC fiber ends have low back reflection even when disconnected.
2.
A Greninger chart can be used to interpret the back reflection Laue photograph.
3.
The Laue back reflection mode records X-rays scattered backwards from a broad spectrum source.
4.
If back reflections cannot be avoided, an optical isolator must be installed directly behind the SLED module.
5.
However, SLEDs from certain component manufacturers are on the market featuring intrinsically safe designs with high robustness against optical back reflections.
6.
Such connections have higher loss than PC connections, but greatly reduced back reflection, because light that reflects from the angled surface leaks out of the fiber core.
7.
Such devices can be sensitive to : modal distribution, wavelength, contamination, vibration, temperature, damage due to power bursts, may cause back reflections, may cause signal dispersion etc.
8.
Generally angle-polished connectors have higher insertion loss than good quality straight physical contact ones . " Ultra " quality connectors may achieve comparable back reflection to an angled connector when connected, but an angled connection maintains low back reflection even when the output end of the fiber is unmated.
9.
Generally angle-polished connectors have higher insertion loss than good quality straight physical contact ones . " Ultra " quality connectors may achieve comparable back reflection to an angled connector when connected, but an angled connection maintains low back reflection even when the output end of the fiber is unmated.
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