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Cost-effective wavelength-tunable fiber laser using self-seeding Fabry-Perot laser diode
Chien-Hung Yeh1, Fu Y Shih, Chia H Wang
1Information and Communications Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu 31040, Taiwan.
Optics Express
|June 4, 2008
Summary
We developed a tunable-wavelength fiber laser using a self-seeding Fabry-Perot laser diode (FP-LD). This novel design achieves stable single-wavelength output across a broad tuning range without an internal optical amplifier.
Area of Science:
- Photonics and Laser Technology
- Optical Engineering
- Fiber Optic Systems
Background:
- Fiber lasers are crucial for various applications, but achieving tunable single-wavelength output often requires complex configurations.
- Existing tunable laser designs may involve bulky components or limited wavelength ranges.
Purpose of the Study:
- To propose and demonstrate a novel continuous wave (CW) tunable-wavelength fiber laser.
- To achieve single-longitudinal mode operation using a self-seeding technique.
- To evaluate the laser's performance metrics, including output power, side-mode suppression, and wavelength tunability.
Main Methods:
- Utilized a self-seeding configuration with a Fabry-Perot laser diode (FP-LD) as the gain medium.
- Incorporated a tunable bandpass filter (TBF) and a fiber reflected mirror (FRM) within the gain cavity.
- Experimental validation of the laser's operation and performance characteristics.
Main Results:
- Successfully demonstrated a CW tunable-wavelength fiber laser.
- Achieved single-longitudinal wavelength lasing due to the self-seeding operation.
- Exhibited output power greater than -15 dBm and an optical side-mode suppression ratio greater than 40 dB.
- Covered a wide wavelength tuning range from 1533.75 to 1560.95 nm.
- Investigated and confirmed the output stability of the fiber laser.
Conclusions:
- The proposed self-seeding FP-LD fiber laser offers a compact and effective solution for tunable wavelength generation.
- The demonstrated performance metrics indicate suitability for applications requiring stable, tunable laser sources.
- The absence of an internal optical amplifier simplifies the laser cavity design.
