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Widely tunable Vernier ring laser on hybrid silicon
Optics Express
|October 10, 2013
Summary
A novel hybrid silicon tunable Vernier ring laser was developed. This laser achieves over 40 nm of thermal tuning with excellent side mode suppression and a narrow linewidth.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
- Semiconductor Device Physics
Background:
- Integrated photonics requires advanced tunable laser sources.
- Hybrid III-V-on-silicon technology offers a path to high-performance optoelectronic devices.
- Vernier ring lasers provide a mechanism for wide tuning ranges.
Purpose of the Study:
- To design and fabricate a hybrid silicon tunable Vernier ring laser.
- To demonstrate wide thermal tuning capabilities.
- To characterize the laser's performance, including side mode suppression ratio and linewidth.
Main Methods:
- Integration of two intra-cavity ring resonators.
- Incorporation of hybrid III-V-on-silicon gain elements.
- Utilizing resistive heaters for precise thermal tuning.
Main Results:
- Successful fabrication of the hybrid silicon tunable Vernier ring laser.
- Demonstrated thermal tuning range exceeding 40 nm.
- Achieved a side mode suppression ratio greater than 35 dB.
- Measured a laser linewidth of 338 kHz.
Conclusions:
- The hybrid III-V-on-silicon approach enables highly tunable integrated lasers.
- The demonstrated performance meets requirements for various photonic applications.
- This work advances the development of compact and versatile tunable laser sources.
