Silicon photonic paper-clip spiral delay lines with ultra-low delay loss of 0.5 dB/ns
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866915676053045248 |
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| author | Hashemi, Batoul Méndez-Rosales, Manuel Arturo Edke, Parimal Islam, Mohammad Rezaul Das, Ranjan Knights, Andrew P. Bradley, Jonathan D. B. |
| author_facet | Hashemi, Batoul Méndez-Rosales, Manuel Arturo Edke, Parimal Islam, Mohammad Rezaul Das, Ranjan Knights, Andrew P. Bradley, Jonathan D. B. |
| contents | In this work, we demonstrate compact paper-clip spiral silicon photonic waveguides with ultra-low delay loss. We characterize the optical loss and group delay of single-mode and multi-mode silicon waveguides across the telecom O-, S-, C-, and L-bands. For spiral devices with 2.0-μm-wide waveguides, we measure propagation losses of 0.11 and 0.06 dB/cm at 1310 and 1550 nm, representing 10- and 20-times improvements, respectively, compared to the singlemode waveguides. Additionally, we observe a group delay of 1163 ps for a 9.5 cm-long waveguide with a compact device footprint of (0.30 {\times} 3.00) mm2, yielding a delay loss of 0.5 dB/ns. These results are highly promising for large-scale silicon photonic integration, delay lines, and on-chip programmable systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_13391 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Silicon photonic paper-clip spiral delay lines with ultra-low delay loss of 0.5 dB/ns Hashemi, Batoul Méndez-Rosales, Manuel Arturo Edke, Parimal Islam, Mohammad Rezaul Das, Ranjan Knights, Andrew P. Bradley, Jonathan D. B. Optics In this work, we demonstrate compact paper-clip spiral silicon photonic waveguides with ultra-low delay loss. We characterize the optical loss and group delay of single-mode and multi-mode silicon waveguides across the telecom O-, S-, C-, and L-bands. For spiral devices with 2.0-μm-wide waveguides, we measure propagation losses of 0.11 and 0.06 dB/cm at 1310 and 1550 nm, representing 10- and 20-times improvements, respectively, compared to the singlemode waveguides. Additionally, we observe a group delay of 1163 ps for a 9.5 cm-long waveguide with a compact device footprint of (0.30 {\times} 3.00) mm2, yielding a delay loss of 0.5 dB/ns. These results are highly promising for large-scale silicon photonic integration, delay lines, and on-chip programmable systems. |
| title | Silicon photonic paper-clip spiral delay lines with ultra-low delay loss of 0.5 dB/ns |
| topic | Optics |
| url | https://arxiv.org/abs/2512.13391 |