Guiding light in bent waveguide superlattices with low crosstalk
Abstract
Waveguide superlattices with a subwavelength pitch and low crosstalk can significantly increase the waveguide integration density and are beneficial for many chip-scale applications. Bending of such high-density waveguide superlattices is necessary for flexible signal routing. However, tight bending tends to induce high crosstalk between guided modes, as witnessed in multimode waveguide bends. Here we explore the mechanisms of light guiding and coupling in a subwavelength-pitch waveguide superlattice bend and analyze how bending further modifies the already “renormalized” parameters of superlattice modes via various physical effects. Particularly, bending can skew the phase mismatch in a waveguide superlattice, sometimes producing a near phase-matching condition and causing salient crosstalk spikes among non-first-nearest neighbors. Interestingly, a waveguide superlattice with less pristine phase mismatch may be more robust against such skew of phase mismatch and can suppress crosstalk spikes by ~10 dB. Bending with 5–15 μm radii and subwavelength pitches has been demonstrated with crosstalk lower than -19.5 dB. The scaling of the footprint of waveguide superlattice bending is analyzed, and significant footprint reduction can be achieved for chip-scale applications. The rationale for footprint reduction of superlattice bending under crosstalk constraint differs markedly from that of a single waveguide bend.
- Authors:
-
[1];
[2];
- Rutgers Univ., Piscataway, NJ (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1559122
- Report Number(s):
- BNL-212015-2019-JAAM
Journal ID: ISSN 2334-2536
- Grant/Contract Number:
- SC0012704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Optica
- Additional Journal Information:
- Journal Volume: 6; Journal Issue: 5; Journal ID: ISSN 2334-2536
- Publisher:
- Optical Society of America
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY
Citation Formats
Gatdula, Robert, Abbaslou, Siamak, Lu, Ming, Stein, Aaron, and Jiang, Wei. Guiding light in bent waveguide superlattices with low crosstalk. United States: N. p., 2019.
Web. doi:10.1364/OPTICA.6.000585.
Gatdula, Robert, Abbaslou, Siamak, Lu, Ming, Stein, Aaron, & Jiang, Wei. Guiding light in bent waveguide superlattices with low crosstalk. United States. https://doi.org/10.1364/OPTICA.6.000585
Gatdula, Robert, Abbaslou, Siamak, Lu, Ming, Stein, Aaron, and Jiang, Wei. Thu .
"Guiding light in bent waveguide superlattices with low crosstalk". United States. https://doi.org/10.1364/OPTICA.6.000585. https://www.osti.gov/servlets/purl/1559122.
@article{osti_1559122,
title = {Guiding light in bent waveguide superlattices with low crosstalk},
author = {Gatdula, Robert and Abbaslou, Siamak and Lu, Ming and Stein, Aaron and Jiang, Wei},
abstractNote = {Waveguide superlattices with a subwavelength pitch and low crosstalk can significantly increase the waveguide integration density and are beneficial for many chip-scale applications. Bending of such high-density waveguide superlattices is necessary for flexible signal routing. However, tight bending tends to induce high crosstalk between guided modes, as witnessed in multimode waveguide bends. Here we explore the mechanisms of light guiding and coupling in a subwavelength-pitch waveguide superlattice bend and analyze how bending further modifies the already “renormalized” parameters of superlattice modes via various physical effects. Particularly, bending can skew the phase mismatch in a waveguide superlattice, sometimes producing a near phase-matching condition and causing salient crosstalk spikes among non-first-nearest neighbors. Interestingly, a waveguide superlattice with less pristine phase mismatch may be more robust against such skew of phase mismatch and can suppress crosstalk spikes by ~10 dB. Bending with 5–15 μm radii and subwavelength pitches has been demonstrated with crosstalk lower than -19.5 dB. The scaling of the footprint of waveguide superlattice bending is analyzed, and significant footprint reduction can be achieved for chip-scale applications. The rationale for footprint reduction of superlattice bending under crosstalk constraint differs markedly from that of a single waveguide bend.},
doi = {10.1364/OPTICA.6.000585},
journal = {Optica},
number = 5,
volume = 6,
place = {United States},
year = {Thu May 02 00:00:00 EDT 2019},
month = {Thu May 02 00:00:00 EDT 2019}
}
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Works referenced in this record:
Making spatial multiplexing a reality
journal, April 2014
- Winzer, Peter J.
- Nature Photonics, Vol. 8, Issue 5
Space-division multiplexing in optical fibres
journal, April 2013
- Richardson, D. J.; Fini, J. M.; Nelson, L. E.
- Nature Photonics, Vol. 7, Issue 5
SDM transmission of real-time 10GbE traffic using commercial SFP + transceivers over 05km elliptical-core few-mode fiber
journal, January 2015
- Ip, Ezra; Milione, Giovanni; Li, Ming-Jun
- Optics Express, Vol. 23, Issue 13
Moore's law in photonics
journal, September 2011
- Smit, M.; van der Tol, J.; Hill, M.
- Laser & Photonics Reviews, Vol. 6, Issue 1
8 × 8 × 40 Gbps fully integrated silicon photonic network on chip
journal, January 2016
- Zhang, Chong; Zhang, Shangjian; Peters, Jon D.
- Optica, Vol. 3, Issue 7
General architectures for on-chip optical space and mode switching
journal, January 2018
- Yang, Lin; Zhou, Ting; Jia, Hao
- Optica, Vol. 5, Issue 2
A Nanophotonic Interconnect for High-Performance Many-Core Computation
conference, August 2008
- Beausoleil, R. G.; Ahn, J.; Binkert, N.
- 2008 16th IEEE Symposium on High Performance Interconnects
High-density waveguide superlattices with low crosstalk
journal, May 2015
- Song, Weiwei; Gatdula, Robert; Abbaslou, Siamak
- Nature Communications, Vol. 6, Issue 1
Adiabatic elimination-based coupling control in densely packed subwavelength waveguides
journal, June 2015
- Mrejen, Michael; Suchowski, Haim; Hatakeyama, Taiki
- Nature Communications, Vol. 6, Issue 1
Increasing the density of passive photonic-integrated circuits via nanophotonic cloaking
journal, November 2016
- Shen, Bing; Polson, Randy; Menon, Rajesh
- Nature Communications, Vol. 7, Issue 1
Efficient Cross-talk Reduction of Nanophotonic Circuits Enabled by Fabrication Friendly Periodic Silicon Strip Arrays
journal, November 2017
- Bian, Yusheng; Ren, Qiang; Kang, Lei
- Scientific Reports, Vol. 7, Issue 1
Experimental demonstration of simultaneous mode and polarization-division multiplexing based on silicon densely packed waveguide array
journal, January 2015
- Chen, Kaixuan; Wang, Siya; Chen, Sitao
- Optics Letters, Vol. 40, Issue 20
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration
journal, May 2018
- Jahani, Saman; Kim, Sangsik; Atkinson, Jonathan
- Nature Communications, Vol. 9, Issue 1
On-chip transformation optics for multimode waveguide bends
journal, January 2012
- Gabrielli, Lucas H.; Liu, David; Johnson, Steven G.
- Nature Communications, Vol. 3, Issue 1
Accurate numerical method for the calculation of bending loss in optical waveguides using a matrix approach
journal, January 1987
- Thyagarajan, K.; Shenoy, M. R.; Ghatak, A. K.
- Optics Letters, Vol. 12, Issue 4
Ultra-compact bent multimode silicon waveguide with ultralow inter-mode crosstalk
journal, January 2017
- Sun, Chunlei; Yu, Yu; Chen, Guanyu
- Optics Letters, Vol. 42, Issue 15
Low Crosstalk Bent Multimode Waveguide for On-chip Mode-Division Multiplexing Interconnects
conference, January 2018
- Wu, Xinru; Zhou, Wen; Huang, Duanni
- CLEO: Applications and Technology, Conference on Lasers and Electro-Optics
Simultaneous wavelength locking of microring modulator array with a single monitoring signal
journal, January 2017
- Dong, Po; Gatdula, Robert; Kim, Kwangwoong
- Optics Express, Vol. 25, Issue 14
Simultaneous four-channel thermal adaptation of polarization insensitive silicon photonics WDM receiver
journal, January 2017
- Gatdula, Robert; Kim, Kwangwoong; Melikyan, Argishti
- Optics Express, Vol. 25, Issue 22
Parallel-coupled dual racetrack silicon micro-resonators for quadrature amplitude modulation
journal, January 2011
- Integlia, Ryan A.; Yin, Lianghong; Ding, Duo
- Optics Express, Vol. 19, Issue 16
A nanophotonic interconnect for high-performance many-core computation
conference, September 2008
- Beausoleil, R. G.; Fiorentino, M.; Ahn, J.
- 2008 5th IEEE International Conference on Group IV Photonics
A Nanophotonic Interconnect for High-Performance Many-Core Computation
conference, January 2008
- Beausoleil, R. G.; Ahn, J.; Binkert, N.
- Integrated Photonics and Nanophotonics Research and Applications
Space Division Multiplexing in Optical Fibres
text, January 2013
- Richardson, D. J.; Fini, J. M.; Nelson, L. E.
- arXiv
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration
text, January 2017
- Jahani, Saman; Kim, Sangsik; Atkinson, Jonathan
- arXiv
Works referencing / citing this record:
Design of a low-crosstalk half-wavelength pitch nano-structured silicon waveguide array
journal, January 2019
- Wang, Liping; Chen, Ze; Wang, Hongfei
- Optics Letters, Vol. 44, Issue 13