C
C
Specications
Denition of Terms
Absolute wavelength
accuracy:
The maximum dierence between the actual wavelength and the
displayed wavelength of the TLS. Wavelength is dened as
wavelength in vacuum.
Conditions:
constant power level, temperature within operating
temperature range, coherence control o.
Measurement
with wavelength meter.
Linewidth:
The 3 dB width of the optical spectrum, expressed in Hertz.
Conditions:
temperature within operating temperature range,
coherence control o.
Measurement
with heterodyning technique: the output of the laser
under test is mixed with another laser of the same type on a wide
bandwidth photodetector. The electrical noise spectrum of the
photodetector current is measured with HP lightwave signal analyzer.
Maximum specied output
power:
The maximum output power specied at a specic wavelength.
Measurement
at the end of a patchcord.
Figure C-1.
Maximum Specied Output Power for 8168D, E and F
(without options)
Minimum output power:
The minimum output power for which the specications apply.
Specications C-1
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