Bloch surface waves based platform for integrated optics

Resonant propagating waves created on the surface of a dielectric multilayer stack, called Bloch surface waves (BSW), can be designed for high sensitivity monitoring of the adjacent refractive index as an alternative platform to the metal-based surface plasmon resonance (SPR) sensing. The resonant wavelength and polarization can be designed by engineering of the dielectric layers unlike the fixed resonance of SPR, while the wide bandwidth low loss of dielectrics permits sharper resonances, longer propagation lengths and thus their use in waveguiding devices. The transparency of the dielectrics allows the excitation and monitoring of surface-bound fluorescent molecules. We review the recent developments in this technology. We show the advantages that can be obtained by using high index contrast layered structures. Operating at 1550 nm wavelengths will allow the BSW sensors to be implemented in the silicon photonics platform where active waveguiding can be used in the realization of compact planar integrated circuits for multi-parameter sensing.

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“…[50] A BSW propagation length of 2.5 mm was recently demonstrated using a TiO 2 waveguiding layer. [51]…”

Section: Bsw For Planar Optical Circuitsmentioning

confidence: 99%

Bloch surface wave structures for high sensitivity detection and compact waveguiding

Khan

Corbett

2016

Science and Technology of Advanced Materials

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“…al. [15] have studied thoroughly more complex ultra-thin optical components which are the key elements of integrated optics applications. These compounds include 2D disk resonators [16][17][18][19], BSWs reflectors [20,21], 2D non-diffracting beam [22] and graphene based in-plane photodetectors [23].…”

Section: Introductionmentioning

confidence: 99%

“…These compounds include 2D disk resonators [16][17][18][19], BSWs reflectors [20,21], 2D non-diffracting beam [22] and graphene based in-plane photodetectors [23]. The study contributes to the significant advancement of BSWs based 2D optical integrated systems [24][25][26][27][28][29]. With the aim of finding new optical functionalities various materials have been used for multilayers and the top (device) layer.…”

Section: Introductionmentioning

confidence: 99%

Bloch surface waves at the telecommunication wavelength with lithium niobate as the top layer for integrated optics

et al. 2019

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Lithium niobate (LN) based devices are widely used in integrated and nonlinear optics. This material is robust and resistive to high temperatures, which makes the LN-based devices table, but challenging to fabricate. In this work we report on the design, manufacturing and characterization of engineered dielectric media with thin film lithium niobate (TFLN) on top for the coupling and propagation of electromagnetic surface waves at the telecommunication wavelengths. The designed one-dimentional photonic crystal (1DPhC) sustains Bloch surface waves at the multilayer/air interface at 1550 nm wavelength with a propagation detected over a distance of 3 mm. The working wavelength and improved BSW propagation parameters open the way for exploration of nonlinear properties of BSW based devices. It is also expected that these novel devices will modify BSW propagation and coupling by external thermal/electrical stimuli due to the improved quality of the TFLN top layer of 1DPhC.

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“…The aforementioned advantages and features make the BSW platform an interesting candidate for the development of 2D optical systems [13][14][15]. To this end, several 2D optical components based on BSWs have been studied theoretically and experimentally.…”

Section: Introductionmentioning

confidence: 99%

Bloch Surface Waves Using Graphene Layers: An Approach toward In-Plane Photodetectors

et al. 2018

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A dielectric multilayer platform was investigated as a foundation for two-dimensional optics. In this paper, we present, to the best of our knowledge, the first experimental demonstration of absorption of Bloch surface waves in the presence of graphene layers. Graphene is initially grown on a Cu foil via Chemical Vapor Deposition and transferred layer by layer by a wet-transfer method using poly(methyl methacrylate), (PMMA). We exploit total internal reflection configuration and multi-heterodyne scanning near-field optical microscopy as a far-field coupling method and near-field characterization tool, respectively. The absorption is quantified in terms of propagation lengths of Bloch surface waves. A significant drop in the propagation length of the BSWs is observed in the presence of graphene layers. The propagation length of BSWs in bare multilayer is reduced to 17 times shorter in presence of graphene monolayer, and 23 times shorter for graphene bilayer.

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Bloch surface waves based platform for integrated optics

Abstract: Abstract-A dielectric multilayer platform sustaining Bloch surface waves is investigated for planar integrated optics. We study the optical properties of high refractive index material (TiO 2 ) and obtain propagation lengths in the range of millimeters.

Cited by 6 publications

References 4 publications

Bloch surface wave structures for high sensitivity detection and compact waveguiding

Bloch surface wave structures for high sensitivity detection and compact waveguiding

Bloch surface waves at the telecommunication wavelength with lithium niobate as the top layer for integrated optics

Bloch Surface Waves Using Graphene Layers: An Approach toward In-Plane Photodetectors

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