Evolution of the Tunable Laser

High Performance Tunable Laser


A tunable laser that achieves both fast scans and high stability.

  • 200 nm/s Rapid Sweep
  • Excellent Accuracy (+/- 2 pm) & Resolution (0.1 pm)
  • Sealed cavity ensures stability for every wavelength
  • Wide Variety of Wavelength Options from 1240 to 1680 nm
  • Fine tuning scan range 10 GHz






Santec’s all new TSL-570 capitalizes on Santec’s 33 years’ experience in tunable laser manufacture. The TSL-570 is a high performance tunable laser with a wide tuning range and an output combining high power and high signal-to-noise ratio. It uses a new optical cavity design with precise speed control up to 200 nm/s and sub-picometer resolution and accuracy.

Tunable lasers are used extensively in photonics; for optical component characterization, photonic integrated circuit testing, quantum photonics, spectroscopy and sensors.  Santec’s TSL-570 is a high specification, full feature instrument suitable for all applications.  It has a simple to use touch panel display as well as Ethernet, GPIB and USB interfaces for remote control.  A Wake-on-LAN (WoL) feature provides convenience for remote installations.  Models are available to cover from 1240 to 1680 nm with output powers up to 20 mW.

A new sealed laser cavity is mode-hop-free and provides a stable output at every wavelength. It has 0.1 pm resolution, sub-pm accuracy and a market leading, 90 dB/0.1 nm, ultra-low level of spontaneous source emission.  The TSL-570 integrates seamlessly with Santec’s optical power meters (MPM series), optical switches (OSU series) and polarization controllers (PCU series) creating benchmark, turn-key solutions for wavelength dependent loss (WDL) and polarization dependent loss (PDL) measurements (Swept Test System).


Features and Characteristics

  • Output power: + 13 dBm
  • Signal-to-noise ratio: 90 dB/0.1 nm
  • Wavelength accuracy:
    - Type A: ±20 pm wavelength accuracy
    - Type C: ±5 pm wavelength accuracy
    - Type P: ±2 pm wavelength accuracy

  • Wide tuning ranges covering 1240 to 1680 nm
    - Ext O-Band      1240 to 1380 nm
    - O-Band *         1260 to 1360 nm
    - ES-Band *       1355 to 1485 nm
    - Ext ES-Band    1355 to 1505 nm
    - CL-Band *       1500 to 1630 nm
    - SCL-Band        1480 to 1640 nm
    - U-Band *          1560 to 1680 nm

     * Not available in Type P

- Typical Data -

Optical Spectrum
- High Output Power & High Signal-to-Noise Ratio - Optical Spectrum
Wavelength vs. Output power
- Wide Wavelength Range - - Wide Wavelength Range -
Wavelength accuracyWavelength accuracy


  • Optical characterization of components and modules:
    - Tunable Filters, Interleavers, Fiber Bragg Gratings, Couplers, Splitters, Isolators, Switches, etc
    - WSS and Wavelength Blockers
    - DWDM components
  • Silicon photonic waveguide characterization, including micro-cavity ring resonators
  • Spectroscopy
  • Interferometry

Please refer to this link for details. -> Swept Test System
Please refer to this link for details. -> Customer feedback


- Brochure -
- Operation Manual -
If you require an operation manual, please download from here.


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