High-density integrated delay line using extreme skin-depth subwavelength grating waveguides
Abstract
Optical delay lines control the flow of light in time, introducing phase and group delays for engineering interferences and ultrashort pulses. Photonic integration of such optical delay lines is essential for chip-scale lightwave signal processing and pulse control. However, typical photonic delay lines based on long spiral waveguides require extensively large chip footprints, ranging from mm 2 to cm 2 scales. Here we present a scalable, high-density integrated delay line using a skin-depth engineered subwavelength grating waveguide, i.e., an extreme skin-depth (eskid) waveguide. The eskid waveguide suppresses the crosstalk between closely spaced waveguides, significantly saving the chip footprint area. Our eskid-based photonic delay line is easily scalable by increasing the number of turns and should improve the photonic chip integration density.
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1962935
- Grant/Contract Number:
- NA-0003525
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Optics Letters
- Additional Journal Information:
- Journal Name: Optics Letters Journal Volume: 48 Journal Issue: 7; Journal ID: ISSN 0146-9592
- Publisher:
- Optical Society of America
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Ahmed, Ishtiaque, Ahmed, Syed Z., Jaidye, Nafiz, Borhan Mia, Md, Bernussi, Ayrton, and Kim, Sangsik. High-density integrated delay line using extreme skin-depth subwavelength grating waveguides. United States: N. p., 2023.
Web. doi:10.1364/OL.479003.
Ahmed, Ishtiaque, Ahmed, Syed Z., Jaidye, Nafiz, Borhan Mia, Md, Bernussi, Ayrton, & Kim, Sangsik. High-density integrated delay line using extreme skin-depth subwavelength grating waveguides. United States. https://doi.org/10.1364/OL.479003
Ahmed, Ishtiaque, Ahmed, Syed Z., Jaidye, Nafiz, Borhan Mia, Md, Bernussi, Ayrton, and Kim, Sangsik. Wed .
"High-density integrated delay line using extreme skin-depth subwavelength grating waveguides". United States. https://doi.org/10.1364/OL.479003.
@article{osti_1962935,
title = {High-density integrated delay line using extreme skin-depth subwavelength grating waveguides},
author = {Ahmed, Ishtiaque and Ahmed, Syed Z. and Jaidye, Nafiz and Borhan Mia, Md and Bernussi, Ayrton and Kim, Sangsik},
abstractNote = {Optical delay lines control the flow of light in time, introducing phase and group delays for engineering interferences and ultrashort pulses. Photonic integration of such optical delay lines is essential for chip-scale lightwave signal processing and pulse control. However, typical photonic delay lines based on long spiral waveguides require extensively large chip footprints, ranging from mm 2 to cm 2 scales. Here we present a scalable, high-density integrated delay line using a skin-depth engineered subwavelength grating waveguide, i.e., an extreme skin-depth (eskid) waveguide. The eskid waveguide suppresses the crosstalk between closely spaced waveguides, significantly saving the chip footprint area. Our eskid-based photonic delay line is easily scalable by increasing the number of turns and should improve the photonic chip integration density.},
doi = {10.1364/OL.479003},
journal = {Optics Letters},
number = 7,
volume = 48,
place = {United States},
year = {Wed Mar 22 00:00:00 EDT 2023},
month = {Wed Mar 22 00:00:00 EDT 2023}
}
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