Term
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Definition
| group delay is the velocity at which the energy in a pulse travels along a fiber. |
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Term
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Definition
| cause- microscopic variation in material density, compositional fluctuations and defects occurring during manufacture |
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Term
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Definition
| dominant loss mechanism in UV and infrared absorption tails. when inhomogeneties < wavelength |
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Term
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Definition
inhomo~ wavelength
inhomo> lambda/10
scattering in fwd direction |
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Term
| linear and non linear scattering losses |
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Definition
optical power transferred linearly from one mode to another.
optical power transferred in fwd or bkwd direction at diff freq |
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Term
| Stimulated Brillouin Scattering |
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Definition
modulation of light through thermal molecular vibrations
scattered power appears as usb and lsb
*only significant above threshold power density |
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Term
| stimulated raman scattering |
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Definition
| similar to sbs except high freq optical phonon is released |
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Term
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Definition
the min radius that a fiber acn be bent without loss of light or impairment
bend radius should be no less than 15 times the cable dia |
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