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Hybrid-integrated dual-wavelength semiconductor laser with 100 GHz stable frequency spacing
Optics Express
|June 11, 2026
Summary
This study introduces a hybrid-integrated dual-wavelength laser for generating millimeter waves and other applications. The novel semiconductor laser achieves stable dual-wavelength output, enabling precise microwave signal generation.
Area of Science:
- Photonics and Optical Engineering
- Semiconductor Device Physics
- Integrated Optics
Background:
- Dual-wavelength lasers are crucial for applications like millimeter-wave generation, wavelength-division multiplexing, and Raman spectroscopy.
- Semiconductor lasers offer advantages such as chip-integrated architecture, stable wavelengths, and narrow linewidths, making them ideal light sources.
Purpose of the Study:
- To propose and demonstrate a novel hybrid-integrated dual-wavelength laser.
- To achieve precise control over dual-wavelength generation and microwave signal production.
Main Methods:
- The proposed laser integrates a semiconductor optical amplifier, an on-chip microring resonator, and a volume Bragg grating.
- Precise control of current and temperature parameters was employed to tune the laser output.
Main Results:
- Dual wavelengths at 1560.454 nm and 1561.246 nm were successfully generated with narrow linewidths (6.73 kHz and 7.38 kHz).
- Optical beating of the dual-wavelength output yielded a 97.4 GHz microwave signal with less than 100 kHz frequency jitter.
Conclusions:
- The developed hybrid-integrated dual-wavelength laser demonstrates high performance for generating specific wavelengths and microwave signals.
- This laser represents a significant advancement for dual-wavelength source research and development in photonics.
