NKT Photonics Koheras ADJUSTIK, Product Manual

Page: 21 / 105

21
Front and rear panels
Tuning types
The laser’s variants can be further specified with different tuning options. The
options include narrow and wide thermal tuning for coarse adjustment, Piezo
tuning for finer adjustment and output power tuning. The tuning options must be
specified when the laser is ordered from the factory.
Thermal tuning
Thermal tuning options available are:
•
Narrow thermal tuning – provides narrow thermal tuning suitable for
systems where a wide tuning range is not required but vibration immunity is
vital.
•
Wide thermal tuning – provides a wider thermal tuning range at the expense
of reduced immunity to vibration and acoustic pickup.
Note: Wide thermal tuning is the default option for Koheras ADJUSTIK lasers.
Piezo tuning
The laser modules support fine fast wavelength modulation using Piezo tuning.
For further information see
“Fast wavelength modulation” on page 24
).
Note: Koheras ADJUSTIK lasers are fitted with Piezo tuning by default. If Piezo tuning
is not required it must be specified when ordering the laser.
Output power tuning
Output power tuning is determined by the variant type:
•
C15 and Y10 variants – No power tuning, output power is fixed at the factory.
•
E15 variant – Limited power tuning from approximately 30 to 100% of the
maximum output power.
•
X15 variant – Full range power tuning from 0 to 100% of it’s maximum output
power. (A VOA is fitted to its output.)
Front and rear panels
Front panel
Figure 2
shows the front panel of the laser. The laser has two optical outputs A and
B. The outputs are assigned at the factory as either the main output, monitor
output or blank. The front panel also includes controls to operate the laser without
using a CONTROL PC. The controls include:
•
LCD display panel - displays operational parameters and a menu system
where the laser’s parameters can be set.
•
Menu and return buttons – use to enter into menu levels, select parameter
digits, confirm the setting and return to a higher menu level