MX10C, MX40C Series of Optical Transmitters
Chapter 1: Introduction
Rev. F, February 21, 2020
Page 1
Chapter 1
Introduction
1.1 Description
Thorlabs' MX10C and MX40C series of optical transmitters with phase modulators are designed for high-speed phase
modulation of light. They are fully-integrated and user-configurable solutions based on proven lithium niobate (LiNbO
3
) modulator
technology driven by high-fidelity digital RF amplifiers. They are designed for digital applications, and the maximum output swing
of their limiting RF amplifiers is user-adjustable. Variable optical attenuators (VOAs) and power monitors enable completely
automatic optical output power control and stabilization. The MX10C series includes an external loop-back cable for the driver
RF output and modulator RF input ports, which provides the opportunity to use an external driver, if desired.
The MX10C/MX40C, MX10C-LB/MX40C-LB, and MX10C-1310/MX40C-1310 include a tunable C-band laser, a tunable L-band
laser, and a 1310 nm fixed-wavelength laser, respectively. Both the C- and L-band laser sources are tunable on the ITU 50 GHz
grid and include a dither feature for wavelength stabilization. An external laser source, operating from 1250 nm to 1610 nm, can
also be used with all models to provide the optical input.
These instruments can be controlled in two ways. The simplest method is directly via the built-in graphical user interface (GUI)
and touchscreen. The instrument can also be operated remotely via the RS-232 or USB ports on the back panel. Remote control
is enabled using simple SCPI-type serial commands from a PC. See the remote control user guide (RCUG), which can be
downloaded from https://www.thorlabs.com/manuals.cfm.
The
most
recent
firmware
and
remote
control
software
tools
can
be
downloaded
by
visiting
https://www.thorlabs.com/navigation.cfm?Guide_ID=2191
and entering the Item # into the search field. Thorlabs’ technical
support can provide up-to-date information on available firmware revisions and control functions.
NOTE: This manual covers both the MX10C and MX40C series of models as the architectures are very similar. Any differences
will be clearly noted in the following sections.
1.2 Parts List
Inspect the shipping container for damage. If the shipping container seems to be damaged, keep it until you have inspected the
contents and tested the unit mechanically and electrically. Verify that you have received the following items within the package:
1. MX10C or MX40C Series Optical Transmitter Main Unit
2. Power Cord According to Local Power Supply
3. PM Loopback Fiber Optic Cable
4. SMA Loopback RF Cable (not required for MX40C series)
5. Interlock Keys
6. 2.5 mm Interlock Pin (in back panel)
7. 1.25 A 250 VAC Fuse
8. USB Type A to Type B Cable, 6' Long
