New! Fiber Modulator - high speed: SOM

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Fiber Modulator: a new alternative to AOM, EOM or direct diode modulation

This fiber modulator is a lossless, low noise, high speed (~ns), high dynamic range, high extinction ratio solution available from 750 to 1700 nm.


Product reference: SOM


See our tutorial: Fiber modulation basics


Fiber modulator Datasheet 


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Key features:

  • Lossless device
  • High dynamic range: >48 dB
  • High speed: down to 500 ps rise/fall
  • High extinction ratio: >50 dB
  • User design pulse shape
  • Very low noise and stable signals
  • No wavelength evolution along the pulse duration


It is a very compact unit optimized for single-shot to CW performance with pulse width lengths down to 1 nanosecond. This fiber modulator  delivers precision pulses which are generated internally by an on-board pulse generator, or on demand from an external TTL signal. 


SOM (Semiconductor Optical Modulator) can be compared with AOMs, EOMs or direct laser diode modulators. It is the only solution meeting all the constraints for a reliable, stable and efficient fibered modulation. 


Choose your wavelength on the datasheet table or contact us for other wavelength.


One version contains an embedded AWG which lets the user define its own shape with 2 GHz/500 ps resolution and 48 dB dynamic range.


Applications of this fiber modulator includes laser seeding, LIDAR testing, etc.


The GUI software lets the user have total control of all module functions. It includes several libraries for software integration (Labview VIs, DLLs, Hexa etc.).


This fiber modulator works alone or in series with other products in our range like:

Complex systems, such as fiber lasers, can be quickly developed on this module platform.




 SOM standard

 SOM-HPP (High Pulse Performance)


SOM-shape (pulse shaping)

 Wavelength (nm)

 Any wavelength to be chosen between 700 and 1650 nm (see wavelength table next page)

 Optical bandwidth (nm)

 From 20 nm to 110 nm to be selected

 Extinction ratio (dB,typ)

 > 50 dB

 Switching speed (ns,  typical)

 1 ns

 0.6 ns

 2 ns

 Dynamic range

 60 dB

 60 dB

 48 dB

 Small signal gain

 From 22 to 40 dB depending on the selected wavelength (see wavelength table next page)

 Trigger-to-pulse Jitter

 < 8 ps

< 20 ps

< 2 ns

 Pulse shaping




 Max repetition rate

250 MHz

250 MHz

20 MHz

 Max output power

From 20 to 100 mW  (more than 500 mW have been measured in some pulsed configuration)

 Interface/compatibilities and Libraries

USB - Windows 7/10 - DLLs - Hexa - Labview - Python


Example of a SOM-std 40 ns pulse shape from an input 1064 nm DFB laser diode.


Example of a user-defined pulse shape with SOM-std internal AWG from an input 1064 nm DFB laser diode.


GUI interface



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