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All-optical light manipulation based on graphene-embedded side-polished fiber
Optics Letters
|March 15, 2022
Summary
This study demonstrates all-optical light manipulation using a graphene-embedded fiber device. The novel structure effectively controls light loss with low power, showing potential for optical signal processing.
Area of Science:
- Photonics and Optical Engineering
- Materials Science
Background:
- All-optical signal processing offers high speed and low power consumption.
- Graphene's unique optical properties make it suitable for light modulation.
- Fiber-based devices provide compact and integrated solutions for optical functions.
Purpose of the Study:
- To investigate all-optical light manipulation in a graphene-embedded side-polished fiber (SPF) structure.
- To demonstrate effective control of light loss using the Pauli blocking effect.
- To enhance device performance through Norland Optical Adhesives (NOA) coating and SPF evanescent field.
Main Methods:
- Fabrication of a graphene-embedded SPF device coated with NOA.
- Utilizing the Pauli blocking effect for light loss modulation.
- Characterizing device performance including modulation depth, slope, and insertion loss.
Main Results:
- Achieved effective all-optical light manipulation with a modulation depth of 10.4 dB (∼91% efficiency).
- Demonstrated a low required control power of approximately 14 dBm.
- Observed broadband operation with low insertion loss (∼0.6 dB) for both signal and control light.
Conclusions:
- The developed all-fiber device enables efficient all-optical light control.
- The NOA coating and SPF structure enhance graphene-light interaction, improving performance.
- This device holds significant potential for future all-optical signal processing applications.
