Abstract
We present a method for achieving the cylindrical vector beams (CVBs) and optical vortex generation in a solid-core ring fiber (SCRF) by using an acoustically induced fiber grating (AIFG). Theoretical analysis shows that the SCRF can introduce a refractive index difference of ∼10-5 between the first group of adjacent high-order degenerate vector modes. In the experiment, the transmission spectra of AIFG constructed with the SCRF depicts three separate resonance peaks with 3-dB bandwidth and resonance wavelength interval of 0.16 and 2.5 nm, respectively, revealing that the high-order degenerate vector modes have been effectively separated. On the basis of the separation of the degenerate vector mode, the CVBs and the ±1-order optical vortex are further experimentally generated at three separate wavelengths using the AIFG.
| Original language | English |
|---|---|
| Article number | 8675382 |
| Journal | IEEE Journal of Selected Topics in Quantum Electronics |
| Volume | 26 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1 Jul 2020 |
Keywords
- acoustooptic effects
- fiber gratings
- optical fiber devices
- Optical fibers
- optical vortices
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