Block Diagram - THORLABS MX10C Series User Manual

MX10C, MX40C Series of Optical Transmitters Chapter 1: Introduction

1.3 Block Diagram

These instruments are fully integrated and contain both the laser source and a high-speed phase modulator. All the user needs
to supply is the signal source to the Amplifier RF In port. The user can choose to use the internal laser source (via loop-back
fiber) or an external laser source of their own. The Laser In port uses PM fiber with light linearly polarized along the slow axis as
shown on the front panel. Maximum input power is 20 dBm (100 mW). In the MX10C series, the user also has the option of using
their own modulator driver connected to the Modulator RF In port. Transmitters in the MX40C series does not have this option
in order to preserve signal integrity. Optical power is monitored in three places (Mon-1, -2, -3) for the purpose of enabling bias
and power control. These power values are also available at the I/O port. Mon-1 is at the Laser Input, Mon-2 is at the modulator
output, and Mon-3 is at the final Optical Output.
Figure 1 Block Diagram of the MX10C and MX40C Series
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