PPLN-based Free-Space to SMF Conversion and Green to C-Band Wavelength Conversion
Author Information
Author(s): Kodama Takahiro, Kuwahara Kiichiro, Kariya Ayumu, Ikuta Rikizo
Primary Institution: Kagawa University
Hypothesis
Can a PPLN-based system efficiently convert green light signals to C-band wavelengths for optical remote sensing applications?
Conclusion
The study successfully demonstrates a PPLN-based system that significantly reduces transmission loss from green light to C-band, enhancing the performance of optical remote sensing.
Supporting Evidence
- The system achieved a wavelength conversion efficiency of 1.6%.
- Transmission loss was reduced from 15 dB/km in the green band to 0.22 dB/km in the C-band.
- The integration of PPLN-based wavelength conversion allows for seamless connectivity with standard SMF networks.
- High OSNR was achieved after long-wavelength down-conversion for both CW light and OOK signals.
Takeaway
This study shows how we can change green light into a different color that travels better through fiber optics, making it easier to send information over long distances.
Methodology
The study used a PPLN waveguide for wavelength conversion and evaluated the system's performance through experimental setups measuring output power and conversion efficiency.
Limitations
The conversion efficiency was limited by the broad linewidth of the input green light, which affected phase matching in the PPLN.
Digital Object Identifier (DOI)
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