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Efficient Coupling into Polymer Waveguides by Gratings
Abstract
Investigations of highly efficient grating couplers for polymer slab and strip waveguides fabricated by electron-beam lithography are reported. A maximum input efficiency of 67% is achieved. The electron-beam direct-writing technique allows one to replicate the original gratings into polymer substrates by embossing. An all-polymeric optical chip with efficient grating couplers is demonstrated. Waveguide grating couplers with blazed profile and variable grating depth are investigated. Thus, the intensity distribution of the outcoupled light is matched to a Gaussian-like profile. A focusing blazed grating that couples the light with an efficiency of 42% into a polymer strip waveguide is reported. A curvature correction of the grating lines allows one to improve the focusing properties.
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Cited by
Waveguide sub‐wavelength structures: a review of principles and applications
Halir, R., Bock, P. J., Cheben, P., Ortega‐Moñux, A., Alonso‐Ramos, C., Schmid, J. H., Lapointe, J., Xu, D., Wangüemert‐Pérez, J. G., Molina‐Fernández, Í., et al. (2015) · Laser & Photonics Reviews · doi:10.1002/lpor.201400083 · Cited by 658
Compact efficient broadband grating coupler for silicon-on-insulator waveguides
Taillaert, D., Bienstman, P., & Baets, R. (2004) · Optics Letters · doi:10.1364/ol.29.002749 · Cited by 634
Coupling strategies for silicon photonics integrated chips [Invited]
Marchetti, R., Lacava, C., Carroll, L., Gradkowski, K., & Minzioni, P. (2019) · Photonics Research · doi:10.1364/prj.7.000201 · Cited by 635
“17), where z is the direction of light propagation and the origin is set in the desired focal point, the focusing grating can be defined by curving the grating trenches [50], so that Fig.”
BackgroundApodized Waveguide Grating Couplers for Efficient Coupling to Optical Fibers
Chen, X., Li, C., Fung, C. K. Y., Lo, S. M. G., & Tsang, H. K. (2010) · IEEE Photonics Technology Letters · doi:10.1109/lpt.2010.2051220 · Cited by 256
High-efficiency broadband light coupling between optical fibers and photonic integrated circuits
Son, G., Han, S., Park, J., Kwon, K., & Yu, K. (2017) · Nanophotonics · doi:10.1515/nanoph-2018-0075 · Cited by 192
Metadata
- Authors
- Waldhäusl, R., Schnabel, B., Dannberg, P., Kley, E.-B., Bräuer, A., & Karthe, W.
- Venue
- Applied Optics
- Publisher
- Optica Publishing Group
- Published
- 1997-12-20
- Volume
- 36
- Issue
- 36
- Pages
- 9383
- ISSN
- 0003-6935 (ISSN-L)
- 1539-4522
- OpenAlex
- W2034959645
- Cited by
- 163
- References
- 0
- FWCI
- 1.51
- Type
- journal article
- Language
- en
- Open access
- closed
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- Waldhäusl, R., Schnabel, B., Dannberg, P., Kley, E.-B., Bräuer, A., & Karthe, W. (1997). Efficient Coupling into Polymer Waveguides by Gratings. Applied Optics. https://doi.org/10.1364/ao.36.009383
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