THORLABS MX40A Benchtop High-Speed LiNbO3 Electro-Optic Modulator Drivers (1250 - 1610 nm)

Optical Input Power: 20 dBm (Maximum). 22 dBm (Absolute Max.)

External Laser Wavelength Range: 1250 - 1610 nm

Power Calibration Points: 1310 nm, 1550 nm, and 1590 nm

Maximum Bit Rate (Digital Signal): 40 Gb/s

Small Signal Bandwidth(a): 20 GHz

Low Frequency Cutoff: 100 kHz

Amplifier RF Input (Linear Response)(b): 120 mV (Maximum)

Amplifier RF Input (Digital Mode)(c): 400 mV (Typical) 4V (Maximum) 6V (Absolute Max)

Maximum Amplifier DC Input: ±10 V

Maximum Bias Voltage to Modulator: ±10 V (≥50 Ω Input Impedance)

Internal Fiber: 

- PM Ports: PM PANDA-Style Fiber. 

- SM Port: SMF-28-Compatible Fiber

Fiber Connectors: FC/PC, 2.0 mm Narrow Key

Electrical Connectors: SMA Female

Internal Amplifier

Rise/Fall Timed: 8 ps

RF Amplifier Gain: 30 dB

RF Amplifier Maximum Output Swing: 3 V - 7 V (Adjustable)

Electrical Return Losse: -10 dB (Typical)

Internal Control

Power Monitor Accuracy: ±0.5 dBm at Power Calibration Points

Power Monitor Resolution: 0.01 dBm

Power Monitor Insertion Loss (Typical): 0.1 dB per Monitor

VOA Insertion Loss (Typical): 0.4 dB

VOA Attenuation: 20 dB (Max)

VOA Response Tim:  1 s

(a) Linear, Analog Response

(b) <5% Total Harmonic Distortion at 1 GHz

(c) Peak to Peak

(d) Large Signal, Digital Response

(e) Any RF Port



  • Quality Engagement
  • Easy change and return
  • Delivery Avaliable
  • Favorable payment