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Quantum dot SOA/silicon external cavity multi-wavelength laser.
Optics Express
|April 4, 2015
Summary
We developed a novel silicon-based multi-wavelength laser for high-capacity data transmission. This single-cavity device achieves error-free 40 Gb/s transmission, paving the way for advanced optical communication systems.
Area of Science:
- Photonics and Optical Engineering
- Integrated Optics
- Semiconductor Lasers
Background:
- High-capacity data transmission demands advanced laser sources.
- Existing multi-wavelength lasers often face challenges in integration and performance.
- Silicon photonics offers a promising platform for integrated optical devices.
Purpose of the Study:
- To demonstrate a hybrid integrated external cavity, multi-wavelength laser.
- To achieve high-capacity data transmission near 1310 nm using a silicon-based platform.
- To report the first single-cavity multi-wavelength laser in silicon.
Main Methods:
- Fabrication of a hybrid device combining a quantum dot reflective semiconductor optical amplifier with a silicon-on-insulator chip.
- Integration of a Sagnac loop mirror and microring wavelength filter within a single cavity.
- Characterization of lasing performance and data transmission capabilities.
Main Results:
- Achieved four major lasing peaks from a single cavity.
- Demonstrated low power non-uniformity (< 3 dB) across the lasing peaks.
- Successfully demonstrated error-free 4 × 10 Gb/s data transmission.
Conclusions:
- The developed hybrid integrated laser is a significant advancement for silicon photonics.
- This single-cavity multi-wavelength laser enables high-capacity optical data transmission.
- The device shows potential for future high-speed communication networks.
