Two-photon absorption and all-optical modulation in germanium-on-silicon waveguides for the mid-infrared
The nonlinear absorption properties of a germanium-on-silicon waveguide have been characterized across the two-photon absorption (TPA) transmission window. The results show that the TPA parameters in germanium waveguides are much stronger than the peak values in silicon, in good agreement with selec...
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| Veröffentlicht in: | Optics letters 2015-05, Vol.40 (10), p.2213-2216 |
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| container_issue | 10 |
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| container_title | Optics letters |
| container_volume | 40 |
| creator | Shen, Li Healy, Noel Mitchell, Colin J Penades, Jordi Soler Nedeljkovic, Milos Mashanovich, Goran Z Peacock, Anna C |
| description | The nonlinear absorption properties of a germanium-on-silicon waveguide have been characterized across the two-photon absorption (TPA) transmission window. The results show that the TPA parameters in germanium waveguides are much stronger than the peak values in silicon, in good agreement with selected measurements conducted in bulk materials. Exploiting the large nonlinear absorption near the bandedge, efficient all-optical modulation is achieved with a modulation depth of ∼8 dB and a response time |
| doi_str_mv | 10.1364/OL.40.002213 |
| format | Article |
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| ispartof | Optics letters, 2015-05, Vol.40 (10), p.2213-2216 |
| issn | 0146-9592 1539-4794 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1835649149 |
| source | Optica Publishing Group Journals |
| subjects | Absorption Materials selection Modulation Nonlinearity Parameters Response time Silicon Waveguides |
| title | Two-photon absorption and all-optical modulation in germanium-on-silicon waveguides for the mid-infrared |
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