Temperature-dependent Goos-Hänchen shifts in a symmetrical graphene-cladding waveguide

Zhou, Xiang; Tang, Peng; Yang, Chenfei; Liu, Shuoqing; Luo, Zhaoming

doi:10.1016/j.rinp.2021.104100

Cited by 7 publications

(4 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This feature is obviously different from those in the previous works, where the enhanced GH shifts always come at the cost of the low reflectances [47][48][49]. For example, it has been reported that the maximum value of GH shift can reach l 1220 but its reflection coefficient is only 0.005 in the structure of a BK7 glass slab sandwiched by two monolayers of graphene [37]. Similarly, the maximum value of GH shift and the reflectance are the respective l 64.43 and 0.38 when the BK7 glass grating layer in our structure is replaced by its slab (green dotted-dashed line).…”

Section: Results and Analysiscontrasting

confidence: 67%

“…From figure 7(a), it can be found that the magnitude of S depends on the wavelength and the maximum value of S can reach m ´ -5.0017 10 m C ). The sensitivity obtained in monolayer graphene based BK7 glass grating structure is at least comparable with that in the symmetrical graphene-cladding waveguide and in graphene-hexagonal boron nitride (hBN) heterostructure [37,50], which suggests its application potential in the temperature sensors.…”

Section: Results and Analysismentioning

confidence: 71%

“…Besides, Zhou et al theoretically investigated the GH shift of the BK7 glass slab sandwiched by two monolayer graphenes. It is revealed that its GH shift can reach l 1220 at the valley of the Fresnel reflection coefficient curve and its magnitude also oscillates with temperature mainly due to the temperature dependence of the thickness of the BK7 glass [37]. These works suggest that the BK7 glass enables an opportunity to become a potential candidate in thermal-related devices.…”

Section: Introductionmentioning

confidence: 86%

See 2 more Smart Citations

Temperature controllable Goos–Hänchen shift and high reflectance of monolayer graphene induced by BK7 glass grating

Lu¹,

Shanshan²,

Zhu³

et al. 2022

Nanotechnology

View full text Add to dashboard Cite

BK7 glass has an unusual temperature-dependent refractive index and thickness, which provides a promising platform for uncovering the temperature-related optical phenomena and applications. Here, we theoretically demonstrate that monolayer graphene based BK7 glass grating structure has two Goos-Hänchen (GH) peaks with respective magnitudes of 2564λ and 1993λ, and their corresponding reflectances are also high. The electromagnetic field distribution in this structure directly reveals that the enhanced GH shifts can be ascribed to the excitation of the guide mode resonances in the waveguide dielectric layer below BK7 glass grating structure and their high reflectances are granted by the constructive interferences between the reflected waves. In addition, the magnitudes of the GH peaks can be controlled by the temperature of BK7 glass as well as the chemical potential of monolayer graphene. We also evaluate the temperature sensing property of this structure based on the GH shifts and find that its maximum temperature sensitivity can be up to 50017 μm/°C . The enhanced and controlled GH shift presented in monolayer graphene based BK7 glass grating structure shows promise for the applications, such as, optical sensors, temperature sensors, and optoelectronic detectors.

show abstract

Section: Results and Analysiscontrasting

confidence: 67%

Section: Results and Analysismentioning

confidence: 71%

Section: Introductionmentioning

confidence: 86%

See 1 more Smart Citation

Temperature controllable Goos–Hänchen shift and high reflectance of monolayer graphene induced by BK7 glass grating

Lu¹,

Shanshan²,

Zhu³

et al. 2022

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…A plasmonic metasensor formed by atomically thin perovskite nanomaterials has also been proposed for improving the GH sensitivity up to 1.5458 × 10 9 µm/RIU [ 41 ], offering numerous opportunities for the detection of chemical and biological markers difficult to identify (e.g., the diagnosis of tumor necrosis factor—TNF). We can also mention the theoretical studies of GH shift, developed on a symmetric graphene cladding waveguide, showing a sensitivity up to 2.2 × 10 5 μm/C, which could open avenues for applications of optical temperature sensors [ 42 ].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Plasmonic Waveguide Biosensor Based on Phase Singularity-Enhanced Goos–Hänchen Shift

et al. 2022

View full text Add to dashboard Cite

The detection for small molecules with low concentrations is known to be challenging for current chemical and biological sensors. In this work, we designed a highly sensitive plasmonic biosensor based on the symmetric metal cladding plasmonic waveguide (SMCW) structure for the detection of biomolecules. By precisely designing the configuration and tuning the thickness of the guiding layer, ultra-high order modes can be excited, which generates a steep phase change and a large position shift from the Goos–Hänchen effect (with respect to refractive index changes). This position shift is related to the sharpness of the optical phase change from the reflected signal of the SPR sensing substrate and can be directly measured by a position sensor. Based on our knowledge, this is the first experimental study done using this configuration. Experimental results showed a lateral position signal change > 90 µm for glycerol with a sensitivity figure-of-merit of 2.33 × 104 µm/RIU and more than 15 µm for 10−4 M biotin, which is a low molecular weight biomolecule (less than 400 Da) and difficult to be detected with traditional SPR sensing techniques. Through integrating the waveguide with a guiding layer, a strong improvement in the electric field, as well as sensitivity have been achieved. The lateral position shift has been further improved from 14.17 µm to 284 µm compared with conventional SPR substrate with 50 nm gold on single side. The as-reported sensing technique allows for the detection of ultra-small biological molecules and will play an important role in biomedical and clinical diagnostics.

show abstract

Experimental proof on the effect of beam width and spatial coherence on Goos-Hänchen shift

Zhu¹,

Gao²,

Zhang³

et al. 2023

Optics & Laser Technology

View full text Add to dashboard Cite

Temperature-dependent Goos-Hänchen shifts in a symmetrical graphene-cladding waveguide

Cited by 7 publications

References 46 publications

Temperature controllable Goos–Hänchen shift and high reflectance of monolayer graphene induced by BK7 glass grating

Temperature controllable Goos–Hänchen shift and high reflectance of monolayer graphene induced by BK7 glass grating

Highly Sensitive Plasmonic Waveguide Biosensor Based on Phase Singularity-Enhanced Goos–Hänchen Shift

Experimental proof on the effect of beam width and spatial coherence on Goos-Hänchen shift

Contact Info

Product

Resources

About