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Appendix C. Specifications
Definitions of Terms
Definitions of Terms
Output Power
The output power at the specified wavelength, measured at the end
of the pigtail (#020) or at the end of a jumper cable (#021 and
#022), assuming specified HP connector interfaces and patchcords.
Connectors and patchcords must be absolutely clean and
undamaged.
CW-Stability short term
The uncertainty of the power level observed over the given time
relative to the mean power during this time.
Measured with average optical power meter and a 9/125 µm fiber,
at constant temperature within the specified operating temperature
and within a given time, line voltage uninterrupted.
Center Wavelength
The wavelength defined as wavelength in air and by the "center of
gravity" of the spectral emission. The power and wavelength of
each spectral component are used in the calculation of the Center
Wavelength:
λ
Σ P
{
×
=
i
is total power Σ P
where
P
0
P
is the power of an individual peak
i
Spectral Bandwidth (FWHM)
FWHM (full width at half the maximum) describes the spectral
width of the half-power points of the laser, assuming a continuous,
Gaussian power distribution.
When the power distribution is a spectrum of discrete lines, then the
FWHM spectral bandwidth, w, is calculated from
2.355 σ
w
=
185
(
λ
⁄
)
}
P
i
0
i
×
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