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Multiwavelength fiber ring lasing by use of a semiconductor optical amplifier
1EXFO Electro-Optical Engineering, Inc, Quebec G1M 2K2, Canada. hongxin.chen@exfo.com
Optics Letters
|March 29, 2005
Summary
Researchers developed a novel multiwavelength fiber ring laser using a semiconductor optical amplifier (SOA). This laser achieves over 50 simultaneous wavelengths, offering stable broadband operation for advanced optical applications.
Area of Science:
- Photonics
- Optical Engineering
- Laser Physics
Background:
- Semiconductor optical amplifiers (SOAs) are crucial components in fiber optic communication systems.
- Achieving stable, multiwavelength laser operation is essential for increasing data transmission capacity.
Purpose of the Study:
- To report a novel multiwavelength fiber ring laser utilizing a semiconductor optical amplifier (SOA).
- To demonstrate simultaneous lasing at multiple wavelengths with a stable broadband output.
Main Methods:
- A simple fiber ring laser cavity configuration was employed.
- A Fabry-Perot filter was integrated into the cavity to enable multiwavelength oscillations.
- A semiconductor optical amplifier (SOA) provided the gain medium.
Main Results:
- More than 50 simultaneous wavelength lasing oscillations were achieved.
- A stable broadband multiwavelength lasing operation was obtained with a frequency separation of 50 GHz.
- The SOA exhibited broadband and flat gain (0.8 dB over >20 nm), crucial for stable operation.
Conclusions:
- The developed fiber ring laser offers a simple yet effective method for generating stable multiwavelength outputs.
- The use of an SOA with broadband gain characteristics is key to achieving high-density wavelength generation.
- This technology holds potential for applications requiring dense wavelength division multiplexing (DWDM).