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Ultrawide-range four-wave mixing in Raman distributed-feedback fiber lasers
Jindan Shi1, Shaif-ul Alam, Morten Ibsen
1Optoelectronics Research Centre, University of Southampton, Highfield, Southampton, UK. jxs@orc.soton.ac.uk
Optics Letters
|March 19, 2013
Summary
We achieved ultrawide-range wavelength conversion using four-wave mixing (FWM) in Raman distributed-feedback (R-DFB) fiber lasers. This method offers high efficiency for optical signal processing applications.
Area of Science:
- Photonics and Optical Engineering
- Fiber Optic Lasers
- Nonlinear Optics
Background:
- Four-wave mixing (FWM) is a key nonlinear optical process for wavelength conversion.
- Raman distributed-feedback (R-DFB) fiber lasers offer unique properties for integrated photonic devices.
Purpose of the Study:
- To demonstrate ultrawide-range and highly efficient wavelength conversion.
- To investigate the use of R-DFB fiber lasers as a platform for FWM.
Main Methods:
- Utilizing center π phase-shifted distributed feedback (DFB) gratings UV written in germano-silica single-mode fibers.
- Employing the R-DFB lasing signal as the pump wave for the FWM process within the laser cavity.
Main Results:
- Achieved a maximum wavelength conversion range of 112 nm.
- Obtained a high FWM conversion efficiency of approximately -25 dB.
- Demonstrated efficient wavelength conversion within the R-DFB laser cavity.
Conclusions:
- R-DFB fiber lasers are effective for ultrawide-range and efficient wavelength conversion via FWM.
- The integrated approach simplifies optical systems and enhances performance.
- This technique has potential applications in optical communications and signal processing.
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