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Backreflection
| Fiber Optic Glossary |
The loosely-used term covers optical return loss (orl) for spans, reflectance for components, and fresnel reflectance
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Reflectance, английский
- The percentage of light that is reflected from an object. spectrophotometers measure an object's reflectance at various intervals along the visible spectrum to determine the object color's spectral curve. see spectral curve, spectral data.
- The ratio of light returned from a surface expressed as a percentage.
- Отражательная способность
- The percentage of light reflected from a component, such as a connector, splice, splitter, or wdm
- The ratio of the reflected flux to the flux incident on a surface. reflectance coefficient, reflectance factor
- Коэффициент отражения, отражательная способность
- Ratio of reflected wave energy to incident wave energy. also known as reflectivity.
Components, английский
Комплектующие
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Center wavelength (cw), английский
The nominal value operating wavelength in a laser; thereby, the wavelength defined by a peak mode measurement where the effective optical power resides
Last mile, английский
- The last mile is the local access network that extends from the co to the end-user subscriber. also called the local loop network, it is traditionally copper-based and suffers from the bandwidth limitations of that media
- Последняя миля last-minute changes and additions последние изменения и добавления
- The final leg in delivering connectivity in a telecommunications network. often perceived as the most critical in terms of both service provision, cost and bandwidth. last modified date/time (n)
- Последний путь осуждённого на казнь last-minute lie разг. ложные сведения, порочащие кандидата на выборный пост, распространяемые накануне дня выборов, т.е. когда опровергнуть их уже невозможно las – lea
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