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Photonic Nanojet-Enabled Mode Matching for Ultralow-Loss Hybrid Fiber Interconnects
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DOI：10.1109/JPHOT.2026.3658357.png)
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Abstract
En 中文
Coupling light into high-index-core hybrid optical fibers (HOFs) typically results in losses >2 dB. We exploit a photonic nanojet-like effect in a tapered subwavelength core to force fundamental mode expansion into the cladding, effectively solving the mismatch problem. For a 0.30 mu m core, this strategy achieves a remarkable coupling loss of 0.31-0.32 dB and reduces Fresnel reflections to negligible levels (<0.1%) by ensuring near-perfect effective index matching with standard fiber. This powerful approach provides a generalized and practical framework for integrating diverse HOF platforms into conventional photonic infrastructure.
Keywords:
Couplings
Refractive index
Photonics
Optical fibers
Silicon dioxide
Indexes
Claddings
Standards
Nonlinear optics
III-V semiconductor materials
All-fiber integration
coupling loss
hybrid optical fibers
mode matching
subwavelength core
Journal
I
IF:
2.4
Papers:
194
Citations:
1.1W
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Cited Papers