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Distributed feedback photonic crystal fibre (DFB-PCF) laser
Optics Express
|June 5, 2009
Summary
Researchers developed a novel distributed feedback laser using erbium-doped photonic crystal fiber. This advancement demonstrates a practical multi-photon writing technique for optical fiber structures without hydrogen or germanium.
Area of Science:
- Photonics
- Optical Engineering
- Materials Science
Background:
- Photonic crystal fibers (PCFs) offer unique light-guiding properties.
- Erbium-doped fibers are crucial for optical amplification and lasing.
- Developing integrated fiber laser structures is an active research area.
Purpose of the Study:
- To fabricate a distributed feedback (DFB) laser within an Er3+-doped photonic crystal fiber.
- To investigate the feasibility of a multi-photon writing process for creating complex structures in optical fibers.
- To demonstrate single-mode lasing without specific polarization control.
Main Methods:
- Fabrication of an Er3+-doped photonic crystal fiber.
- Utilizing a multi-photon writing technique to inscribe the DFB structure.
- Characterization of the laser output spectrum and mode properties.
Main Results:
- Successful fabrication of a DFB laser in Er3+-doped PCF.
- Achieved preferential single-mode lasing operation.
- Demonstrated the effectiveness of the multi-photon writing process for complex fiber structures.
- Confirmed no requirement for hydrogen loading or germanium doping.
Conclusions:
- The multi-photon writing process is a viable method for creating DFB lasers in Er3+-doped PCF.
- The fabricated fiber laser exhibits efficient single-mode operation.
- This technique offers a practical route for complex optical fiber device fabrication.
