MX10B, MX40B Series of Optical Transmitters
Chapter 4: Operating Instructions
Rev. D, March 19, 2019
Page 21
4.6
Laser Settings Page
To access the Laser Settings page, tap on the Laser monitors pane on the Home page. Here the user can control the
laser wavelength and choose whether or not to use the dither feature to stabilize the wavelength (available for models
with C- or L-band lasers only). Turning the dither off will result in lower phase and intensity noise, but the wavelength
may drift slightly over time. The monitors on this page provide live readings of many parameters.
When the internal laser source is a C-band or L-band tunable laser, tap on the Laser Monitors pane on the Home page to access
the Laser Settings page. This page is not available when the 1310 nm fixed-wavelength source is the internal laser. When the
internal laser is not the standard C-band tunable laser, the laser type is denoted in the Options label on the rear panel of the
instrument (please see Figure 3 for location of the Options label).
Optical frequency can be set at increments of 50 GHz for C-band or L-band tunable internal lasers. The ITU channel number on
these pages is an index number given only for convenience, which is unique to this instrument; actual frequencies and spacings
are specified by the ITU standard.
Caution
: The laser should not be turned on unless there is an optical fiber connected to the laser out port.
Figure 37
Enabling and Disabling Laser Dither
Figure 38
Changing the ITU Channel Number
Use these buttons to toggle
the dither function On/Off.
Tap here to change the laser
wavelength by channel
number.
Actual frequency and
wavelength are displayed in
the monitor section.
