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Published on: May 30, 2014
Fiber-optic parametric amplifier and oscillator based on intracavity parametric pump technique
Zhengqian Luo1, Wen-De Zhong, Ming Tang
1Department of Electronic Engineering, Institute of Optoelectronic Technology, Xiamen University, Xiamen, China.
Optics Letters
|January 17, 2009
Summary
A novel fiber optical parametric amplifier (FOPA) uses an intracavity laser pump for cost-effectiveness. This method achieves significant parametric gain without complex pump sources, enabling tunable fiber-optic parametric oscillators.
Area of Science:
- Photonics
- Nonlinear Optics
- Fiber Optics
Background:
- Fiber optical parametric amplifiers (FOPAs) are crucial for optical signal processing.
- Conventional FOPA schemes often require complex and expensive pump sources, such as tunable semiconductor lasers.
- Eliminating pump phase modulation is desirable for simplified FOPA operation.
Purpose of the Study:
- To propose and experimentally demonstrate a cost-effective FOPA using a laser intracavity pump technique.
- To investigate the performance of this novel pumping scheme.
- To develop a widely tunable fiber-optic parametric oscillator based on the FOPA.
Main Methods:
- A fiber ring-laser cavity was constructed using a high-power erbium-doped fiber (EDF) amplifier and fiber Bragg gratings.
- A 1 km highly nonlinear dispersion-shifted fiber (HNL-DSF) was integrated into the cavity to facilitate the parametric process.
- The HNL-DSF was pumped by the intracavity oscillating laser power.
Main Results:
- A peak parametric gain of 27.5 dB was achieved.
- A net gain exceeding 45 nm was obtained.
- The proposed pumping technique eliminated the need for a tunable semiconductor laser and pump phase modulation.
Conclusions:
- The intracavity laser pumping technique offers a cost-effective and simplified approach to FOPA implementation.
- The demonstrated FOPA provides substantial gain, suitable for advanced optical applications.
- The developed FOPA serves as an effective gain medium for widely tunable fiber-optic parametric oscillators.
