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Micro-transfer-printed III-V-on-silicon C-band distributed feedback lasers
Optics Express
|October 29, 2020
Summary
We demonstrate single-mode C-band distributed feedback lasers using micro-transfer printing to integrate InP lasers onto silicon photonic circuits. This method enables efficient light coupling and achieves 80 mA threshold current and 6.9 mW output power.
Area of Science:
- Photonics
- Materials Science
- Electrical Engineering
Background:
- Silicon photonics offers a scalable platform for integrated optical circuits.
- Heterogeneous integration of III-V materials on silicon is crucial for on-chip light sources.
Purpose of the Study:
- To demonstrate single-mode C-band distributed feedback lasers on silicon-on-insulator photonic circuits.
- To evaluate the performance of micro-transfer printing for hybrid III-V/Si integration.
Main Methods:
- Fabrication of semiconductor optical amplifier coupons on InP.
- Micro-transfer printing of InP coupons onto silicon nitride gratings on silicon waveguides.
- Utilizing alignment-tolerant adiabatic tapers for efficient light coupling.
Main Results:
- Achieved 80 mA threshold current and > 6.9 mW output power at 20 °C.
- Demonstrated single-mode operation at 1558 nm with > 33 dB side mode suppression ratio.
- Successful hybrid integration of InP lasers onto silicon photonic circuits.
Conclusions:
- Micro-transfer printing is a viable technique for wafer-level heterogeneous integration of advanced laser sources.
- This approach facilitates the integration of laser sources onto complex silicon photonic integrated circuits without altering foundry processes.
