In the field of photonics and optical communications, precision tools are crucial. A continuously tunable laser is one such tool. It is used in both research labs and on production floors. These lasers are designed to provide accurate, fast, and reliable wavelength tuning across a wide spectrum. One of the most advanced models in this category is the T200S High Power Continuously Tunable Laser.
This laser known for its high-speed sweeping, narrow linewidth, and strong optical power output. The T200S plays a key role in testing complex optical components, especially in Photonic Integrated Circuits (PICs). Whether the goal is measuring insertion loss or polarization-dependent loss, this laser delivers precise and repeatable results.
What Is a Continuously Tunable Laser?
A continuously Tunable Laser Source is a laser source that can adjust its output wavelength smoothly over a range. Unlike fixed-wavelength lasers, tunable lasers can sweep across different wavelengths. This feature is vital for tasks like:
- Spectral testing
- Signal calibration
- Device characterization
- Wavelength-division multiplexing (WDM) emulation
The T200S model offers fast wavelength sweeps, up to 200 nm/s, and maintains a narrow linewidth at any fixed point. This combination makes it ideal for high-resolution spectral analysis.
Why T200S is Ideal for PIC Testing
Photonic Integrated Circuits (PICs) are becoming more complex. They often include sharp spectral features, such as those found in ring resonators. Accurate testing of these features requires:
- High-resolution measurements
- Wide wavelength tuning
- Low noise and high stability
The T200S supports these needs by enabling rapid, continuous sweeps. It can also be paired with tools like the CTP10, a fast component tester, to further enhance testing capabilities. The CTP10 takes full advantage of the T200S’s 200 nm/s sweep speed. For more compact setups, the CT440 offers 100 nm/s performance, also compatible with the T200S.
This integration allows multiple outputs or devices to be tested at once. As a result, test time is reduced, and lab efficiency increases.
The FTBx-2850 µITLA Tunable Light Source
Another high-performance tunable laser is the FTBx-2850. This laser is built for coherent transmission systems and WDM testing. It delivers:
- High output power
- Narrow linewidth (100 kHz)
- 1 pm resolution
These specifications make it ideal for OFDM transmission, coherent signal emulation, and network simulation.
The FTBx-2850 fits into the LTB-8 rackmount platform, which can host up to 8 modules. Each module functions as a separate tunable laser, and platforms can be linked together. This offers a scalable solution, with up to 32 lasers working in sync. These modules are controlled by the ToolBox software, which also supports other EXFO optical test tools like:
- FTBx-3500 variable optical attenuator
- FTBx-1750 high-performance power meter
This setup ensures a powerful and flexible testing environment for modern telecom applications.
T500S – Advanced Spectral Characterization
The T500S is another high-power, continuously tunable laser designed for advanced optical characterization. Like the T200S, it provides:
- Fast wavelength sweeping
- Narrow linewidth
- High output power
The T500S is best suited for detailed spectral analysis where precision and consistency are key. This makes it a strong choice for research labs, particularly in telecom, sensor development, and quantum photonics.
OSICS T100 – Stepped Tunable Laser for Full Band Coverage
For users who need a cost-effective tunable laser that covers a wide range of wavelengths, the OSICS T100 is ideal. It features:
- Stepped wavelength tuning
- Narrow linewidth
- Ultra-low optical noise
- High optical power
The T100 uses a patented external cavity design to provide clean and accurate signals. It is suitable for optical component testing, particularly when high measurement dynamic range is required.
By combining four T100 modules with a SWT optical switch in a single OSICS-8 mainframe, users can cover 1260 nm to 1680 nm with just one fiber output. This makes it a unique and affordable solution for full telecom band testing.
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