Frush - Optical frequency comb

Wavelength: Near 1550nm Spectral Width: 3nm Comb Spacing: 12~18GHz (Variable)

Manufacturer : Sevesix Inc.

✓ Channel spacing: 12-18 GHz Flat optical frequency comb spectrum
✓ Synchronization with external systems
✓ High cost performance
✓ 19" rack size
✓ PMF output available


Our optical frequency comb has a simple configuration that uses a single LN modulator to generate a flat optical frequency comb spectrum with a channel spacing of 12-18 GHz. You can use your existing narrow linewidth laser source as an external input seed light source.

In addition, since the RF signal is also an external input, a low-phase noise signal generator can be used to generate picosecond pulses with low timing jitter. The line width and average output of each channel of the optical frequency comb to be generated depend on the external light source. The optical output of an optical frequency comb is approximately 18 dB lower than the input light.

We recommend that you input RF signals at 16 GHz and < 20 dBm, but other frequencies and RF intensities can be input (fine-tuning required). Optical frequency comb in an all-polarization-preserving fiber configuration are also possible, but if you are not particular about the polarization state, you can keep the price down by using the non-PM (SMF) configuration for the injection fiber of the LN modulator.

Key Features

  • 12-18 GHz channel spacing
  • Flat Spectrum
  • Optical monitor output port×1
  • RRF monitor output port×2
  • Seed Light Source/RF Signal External Input
Technical data on the features of “Frush”


Customization examples of “Frush”


  • Center wavelength: Near 1550nm
  • Spectral Width: 3nm
  • Optical average output: > -5 dBm at 13 dBm optical input
  • Optical pulse width: < 5ps
  • Comb spacing: 12-18GHz (variable)
  • Output port: FC/APC
  • Polarization: Linearly polarization is possible (recommended)
  • Power supply voltage: 100VAC
  • Size:148(H)×480(W)×430(D) mm

There is one optical signal monitor output and two RF signal monitor outputs, so synchronization with external systems is possible.
The optical pulse from this generator is amplified with BOA or EDFA to increase the peak output of the pulse, and then input to a high nonlinear fiber to obtain a broadband comb spectrum of several tens of nm.

Product Catalog (PDF)Technical
Documentation (PDF)

Usage example

Product Explainer Video

A demonstration video of “Frush”

This 2-minute video shows the setup equipment and the generation of an optical frequency comb.

Applications of “Frush”

The best feature of “Frush” is its excellent customizability. You can see examples of various applications using “Frush”.

Playlist of “Frush” applications.

Technology of “Frush”

The optical comb generation method used in Frush and the numerical analysis simulations actually performed by our company are also explained in each video.

Playlist of “Frush” technology.

Research Papers

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