Optical rib waveguides based on sol-gel derived silica–titania films

Karasiński, Paweł; Tyszkiewicz, Cuma; Rogoziński, R.; Jaglarz, Janusz; Mazur, J.

doi:10.1016/j.tsf.2011.02.064

Cited by 51 publications

(28 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover it is hard to synthesize functional glass of optical quality with perfectly homogeneous refractive index and being cracks free. Thus, up to now, the sol-gel method has been used to fabricate thin films that are subsequently processed using different types of lithographic processes such as standard photolithography [195][196][197][198], two-photon laser processing [199], and soft imprinting [200]. A recent review of the results achieved so far is in [201].…”

Section: Sol-gelmentioning

confidence: 99%

Hybrid Materials for Integrated Photonics

Bettotti

2014

Advances in Optics

View full text Add to dashboard Cite

In this review materials and technologies of the hybrid approach to integrated photonics (IP) are addressed. IP is nowadays a mature technology and is the most promising candidate to overcome the main limitations that electronics is facing due to the extreme level of integration it has achieved. IP will be based on silicon photonics in order to exploit the CMOS compatibility and the large infrastructures already available for the fabrication of devices. But silicon has severe limits especially concerning the development of active photonics: its low efficiency in photons emission and the limited capability to be used as modulator require finding suitable materials able to fulfill these fundamental tasks. Furthermore there is the need to define standardized processes to render these materials compatible with the CMOS process and to fully exploit their capabilities. This review describes the most promising materials and technological approaches that are either currently implemented or may be used in the coming future to develop next generations of hybrid IP devices.

show abstract

Section: Sol-gelmentioning

confidence: 99%

Hybrid Materials for Integrated Photonics

Bettotti

2014

Advances in Optics

View full text Add to dashboard Cite

show abstract

“…The details concerning fabrication technology of the silica titania and titania lms are given in Ref. [11,21]. The morphological parameters of the investigated composite waveguide as well as of the parent slab waveguide are schematically presented in Fig.…”

Section: Composite Structurementioning

confidence: 99%

Sensing Properties of Four-Layered Planar Waveguides - Theoretical Analysis

Tyszkiewicz

2012

Acta Phys. Pol. A

Self Cite

View full text Add to dashboard Cite

Optical waveguides are the fundamental components of chemical and biochemical evanescent wave sensors. Presented work focuses on the theoretical investigations of homogeneous sensitivity of four-layered composite planar waveguide composed of a silicatitania lm and a titania lm deposited on a glassy substrate in order of citing. Characteristics of a homogeneous sensitivity and a fundamental modes homogeneous sensitivity dierence of such a structure are compared with the ones for a three-layered waveguide composed of silicatitania waveguiding lm. Therefore the inuence of a high refractive index titania lm on homogeneous sensitivity characteristics of three-layered structure is given. It was shown that homogeneous sensitivity dierence of fundamental modes of four-layered waveguide can be optimized with respect to thicknesses of each layer. For each value of a cover refractive index there exists the minimal thickness of the titania layer which maximizes the homogeneous sensitivity dierence of fundamental modes.

show abstract

“…Ultra clean soda-lime glass substrates (microscope slides, Menzel-Glaser), was cleaned by a method described in the Ref. 15. The films were deposited on the cleaned substrates by dip coating method.…”

Section: Films Fabricationmentioning

confidence: 99%

“…It is of interest for use as gas sensor [1, 2], photoinduced optical operated materials [3], solar cell [4][5][6], photocatalyst [7][8][9], selfcleaning glasses [10], electrochromic films [11], antireflection coatings [12] and transparent conductors [13]. Titanium dioxide is also a principal component used in planar waveguide technology [14,15]. Several synthesis methods concerning titanium dioxide thin films are described in the literature, such as e-beam evaporation [2], magnetron sputtering [7,16], ultrasonic spray pyrolysis [17], chemical vapor deposition [18,19], metal organic chemical vapor deposition [13], pulsed laser deposition [20], and sol-gel method [1, 5,6,[9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Nano-sized blue spectral shift in sol–gel derived mesoporous titania films

Karasiński

Gondek

Drewniak

et al. 2011

J Sol-Gel Sci Technol

Self Cite

View full text Add to dashboard Cite

Following the spectral energy shift of the energy gap (blue shift) of the TiO 2 sol-gel derived films we have evaluated diameters of the nanocrystallites. The TiO 2 films were deposited by dip-coating technique. Two types of mesoporous films were studied: films with porosity *16% and refractive index (2.15 at wavelength 633 nm) and films with porosity *46% and refractive index (1.61 at wavelength 633 nm). High porosity and consequently low refractive index was achieved by adding the non-ionic surfactant Triton X-100 to the starting solution as template. The principal goal of the work is to establish the influence of the Triton X-100 on the morphology as well as to establish a possible correlation between the morphology and optical features of the titania films. The surface morphology was explored using AFM method. And the energy gap was determined from the transmission spectra. Analysis of the blue energy spectral shift is performed following the excitonic model.

show abstract

Optical rib waveguides based on sol-gel derived silica–titania films

Cited by 51 publications

References 24 publications

Hybrid Materials for Integrated Photonics

Hybrid Materials for Integrated Photonics

Sensing Properties of Four-Layered Planar Waveguides - Theoretical Analysis

Nano-sized blue spectral shift in sol–gel derived mesoporous titania films

Contact Info

Product

Resources

About