Fiber optic modulator: a high speed intensity modulator and optical switch

 Bernard Azout

Key Features:

  • Lossless device
  • High dynamic range : >48 dB
  • Very low noise and stable signals
  • High speed : down to 500 ps rise/fall time
  • User design pulse shape (SOM-Shape only)
  • High extinction ratio : >50 dB
  • No wavelength evolution along the pulse duration : SOM maintain the narrow optical linewidth of an input CW signal while producing very short pulses.

Description

This fiber optic modulator is a high speed (nanosecond), high dynamic range, high extinction ratio solution.  It is a low noise and lossless device available from 750 to 1700 nm. Choose your wavelength on the datasheet table or table image above. It is a very compact SOA-based unit optimized for single-shot to CW performance with pulse width down to 1.5 nanosecond. This fiber optic 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. SOM maintain the narrow optical linewidth of an input CW signal while producing very short pulses. It is the only solution meeting all the constraints for a reliable, stable and efficient fiber-coupled  intensity modulation.

To see the various detailed versions, see this page : Fiber optic modulator


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