Nano-scale optical circuits and self-organized lightwave network (SOLNET) fabricated using sol-gel materials with photo-induced refractive index increase

Sol-gel hybrid glass films doped with benzildimethylketal (BDK) were prepared from [(methacryloxy)propyl]trimethoxysilane, methacrylic acid, and zirconium n-propoxide. Polymerization of methacryl groups and polycondensation of alkoxides by UV illumination and baking were observed using Fourier-transformed infrared spectroscopy. Polymerization kinetics and refractive index increase depend on UV illumination time. The refractive index increase is sensitive to BDK concentration and agrees well with photodecomposition of BDK. Thus, it is found that the refractive index increase is made by incorporation of the radicals produced by photodecomposition of BDK in the network as well as polymerization of methacryl groups.

Download Full-text

Direct laser writing of self-developed waveguides in benzyldimethylketal-doped sol-gel hybrid glass

Journal of Materials Research ◽

10.1557/jmr.2001.0439 ◽

2001 ◽

Vol 16 (11) ◽

pp. 3184-3187 ◽

Cited By ~ 25

Author(s):

Byeong-Soo Bae ◽

Oun-Ho Park ◽

Robbie Charters ◽

Barry Luther-Davies ◽

Graham R. Atkins

Keyword(s):

Refractive Index ◽

Sol Gel ◽

Refractive Index Change ◽

Single Mode ◽

Laser Exposure ◽

Laser Writing ◽

Guided Mode ◽

Direct Laser ◽

Development Processes ◽

Refractive Index Increase

Exposure of benzyldimethylketal (BDK)-doped sol-gel hybrid glass films to ultraviolet light produces a refractive index increase up to 43 × 10−3 and an increase in thickness due to photolocking of the BDK into the sol-gel hybrid glass matrix. Thus, single mode ridge waveguides at λ = 1550 nm can be fabricated by direct laser exposure without using photomask and development processes. The slower laser writing speed gives greater refractive index change producing more circular guided mode profiles.

Download Full-text

Sol-Gel Synthesis of Nano-Scale, End-Member Albite Feldspar (NaAlSi3O8)

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2021.06.026 ◽

2021 ◽

Author(s):

L.M. Anovitz ◽

A. Affolter ◽

M.C. Cheshire ◽

A.J. Rondinone ◽

Lawrence F. Allard

Keyword(s):

Sol Gel ◽

Nano Scale ◽

Sol Gel Synthesis

Download Full-text

Self-organized micro-holes on titania based sol-gel films under continuous direct writing with a continuous wave ultraviolet laser

Applied Physics Letters ◽

10.1063/1.4807784 ◽

2013 ◽

Vol 102 (21) ◽

pp. 211903

Author(s):

S. Bakhti ◽

N. Destouches ◽

L. Balan ◽

E. Gamet ◽

S. Reynaud

Keyword(s):

Continuous Wave ◽

Sol Gel ◽

Direct Writing ◽

Ultraviolet Laser ◽

Self Organized ◽

Micro Holes ◽

Sol Gel Films

Download Full-text

Self-organized nano-scale multilayer coating on SiC fibers obtained by phosphating

Journal of the European Ceramic Society ◽

10.1016/j.jeurceramsoc.2017.12.036 ◽

2018 ◽

Vol 38 (6) ◽

pp. 2486-2494 ◽

Cited By ~ 1

Author(s):

S. Mazerat ◽

R. Pailler

Keyword(s):

Multilayer Coating ◽

Sic Fibers ◽

Nano Scale ◽

Self Organized

Download Full-text

Mode Sensitivity Exploration of Silica–Titania Waveguide for Refractive Index Sensing Applications

Sensors ◽

10.3390/s21227452 ◽

2021 ◽

Vol 21 (22) ◽

pp. 7452

Author(s):

Muhammad A. Butt ◽

Andrzej Kaźmierczak ◽

Cuma Tyszkiewicz ◽

Paweł Karasiński ◽

Ryszard Piramidowicz

Keyword(s):

Refractive Index ◽

High Performance ◽

Near Infrared ◽

Sol Gel ◽

Cost Effective ◽

Dip Coating ◽

Infrared Wavelength ◽

Refractive Index Sensing ◽

Sensing Applications ◽

Coating Method

In this paper, a novel and cost-effective photonic platform based on silica–titania material is discussed. The silica–titania thin films were grown utilizing the sol–gel dip-coating method and characterized with the help of the prism-insertion technique. Afterwards, the mode sensitivity analysis of the silica–titania ridge waveguide is investigated via the finite element method. Silica–titania waveguide systems are highly attractive due to their ease of development, low fabrication cost, low propagation losses and operation in both visible and near-infrared wavelength ranges. Finally, a ring resonator (RR) sensor device was modelled for refractive index sensing applications, offering a sensitivity of 230 nm/RIU, a figure of merit (FOM) of 418.2 RIU−1, and Q-factor of 2247.5 at the improved geometric parameters. We believe that the abovementioned integrated photonics platform is highly suitable for high-performance and economically reasonable optical sensing devices.

Download Full-text