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Wavelength-tunable spectral compression in a dispersion-increasing fiber
Hsiu-Po Chuang1, Chen-Bin Huang
1Institute of Photonics Technologies, National Tsing Hua University, 101 Section 2 Kuang Fu Road, Hsinchu 30013, Taiwan.
Optics Letters
|August 3, 2011
Summary
Adiabatic soliton spectral compression was achieved in a dispersion-increasing fiber. Positively chirped pulses yielded enhanced spectral compression, demonstrating a 15.5x ratio and 30 nm wavelength tuning.
Area of Science:
- Nonlinear Optics
- Fiber Optics
- Quantum Optics
Background:
- Soliton propagation in optical fibers is crucial for optical communications.
- Dispersion-increasing fibers (DIFs) offer unique properties for manipulating light pulses.
- Spectral compression of optical pulses is essential for various applications, including spectroscopy and optical signal processing.
Purpose of the Study:
- To demonstrate adiabatic soliton spectral compression in a DIF.
- To investigate the effect of pulse chirp on spectral compression efficiency.
- To achieve high spectral compression ratios and wavelength tunability.
Main Methods:
- Numerical simulations of soliton propagation in DIFs.
- Experimental setup utilizing a 350 fs positively chirped input pulse at 1.5 μm.
- Characterization of spectral compression using optical spectrum analyzers.
Main Results:
- Achieved adiabatic soliton spectral compression both numerically and experimentally.
- Demonstrated that positively chirped pulses lead to better spectral compression in DIFs with large anomalous dispersion ramps.
- Obtained an experimental spectral compression ratio of 15.5.
- Experimentally achieved 30 nm wavelength tuning ability.
Conclusions:
- Adiabatic soliton spectral compression is feasible and effective in DIFs.
- Positively chirped pulses are advantageous for spectral compression in this configuration.
- The demonstrated technique offers a promising method for pulse shaping and wavelength control in optical systems.
