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Electrically-pumped compact hybrid silicon microring lasers for optical interconnects
Di Liang1, Marco Fiorentino, Tadashi Okumura
1Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, USA. dliang@ece.ucsb.edu
Optics Express
|December 10, 2009
Summary
We developed a compact, electrically-pumped hybrid silicon microring laser. This device operates efficiently at low thresholds and high temperatures, showing potential for on-chip optical interconnects.
Area of Science:
- Photonics
- Materials Science
- Electrical Engineering
Background:
- Integrated photonics requires efficient, compact light sources.
- Silicon photonics offers a platform for miniaturization and mass production.
- Hybrid integration combines advantages of different materials for enhanced performance.
Purpose of the Study:
- To demonstrate an electrically-pumped hybrid silicon microring laser.
- To characterize its performance, including lasing threshold and operating temperature.
- To explore its potential for on-chip optical interconnects.
Main Methods:
- Fabrication of a hybrid silicon microring laser using a self-aligned process.
- Characterization of lasing threshold, operating temperature, and spectral properties.
- Analysis of electrical and optical losses.
Main Results:
- Achieved a low lasing threshold of 5.4 mA.
- Demonstrated continuous-wave (cw) operation up to 65°C.
- Observed single-mode operation with a high extinction ratio and narrow linewidth.
- Fabricated a compact microring laser with a diameter of 50 micrometers.
Conclusions:
- The demonstrated hybrid silicon microring laser is compact and efficient.
- It exhibits excellent performance characteristics suitable for integrated photonic applications.
- The device shows promise for advanced on-chip optical interconnects.
