Synthesis of Alkaline-soluble Triazine-based Poly(phenylene sulfide)s with Single/Double Pendant Carboxylic Acid Moieties and Their Application to Refractive Index Contrast Materials

2021 ◽  
Author(s):  
Tomoya Higashihara ◽  
Mao-Chun Fu ◽  
Kouji Hatakeyama ◽  
Shinji Ando ◽  
Ryosuke Takahashi ◽  
...  
Keyword(s):  
Refractive Index ◽  
Carboxylic Acid ◽  
Refractive Index Contrast ◽  
Index Contrast ◽  
Contrast Materials ◽  
Phenylene Sulfide

scholarly journals Optical Sensitivity of Waveguides Inscribed in Nanoporous Silicate Framework

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 123
Author(s):  
Zhong Lijing ◽  
Roman A. Zakoldaev ◽  
Maksim M. Sergeev ◽  
Andrey B. Petrov ◽  
Vadim P. Veiko ◽  
...  
Keyword(s):  
Refractive Index ◽  
Near Field ◽  
Experimental Studies ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Direct Writing ◽  
Sensor Applications ◽  
Refractive Index Contrast ◽  
Optical Sensitivity ◽  
Index Contrast

Laser direct writing technique in glass is a powerful tool for various waveguides’ fabrication that highly develop the element base for designing photonic devices. We apply this technique to fabricate waveguides in porous glass (PG). Nanoporous optical materials for the inscription can elevate the sensing ability of such waveguides to higher standards. The waveguides were fabricated by a single-scan approach with femtosecond laser pulses in the densification mode, which resulted in the formation of a core and cladding. Experimental studies revealed three types of waveguides and quantified the refractive index contrast (up to Δn = 1.2·10−2) accompanied with ~1.2 dB/cm insertion losses. The waveguides demonstrated the sensitivity to small objects captured by the nanoporous framework. We noticed that the deposited ethanol molecules (3 µL) on the PG surface influence the waveguide optical properties indicating the penetration of the molecule to its cladding. Continuous monitoring of the output near field intensity distribution allowed us to determine the response time (6 s) of the waveguide buried at 400 µm below the glass surface. We found that the minimum distinguishable change of the refractive index contrast is 2 × 10−4. The results obtained pave the way to consider the waveguides inscribed into PG as primary transducers for sensor applications.

Integrated platform based on high refractive index contrast waveguide for optical guiding and sorting

2010 ◽  
Author(s):  
Balpreet Singh Ahluwalia ◽  
Olav Gaute Hellesø ◽  
Ananth Z. Subramanian ◽  
James S. Wilkinson ◽  
Jie Chen ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Refractive Index Contrast ◽  
Integrated Platform ◽  
Index Contrast

scholarly journals Air-trench splitters for ultra-compact ring resonators in low refractive index contrast waveguides

2008 ◽  
Vol 16 (1) ◽  
pp. 456 ◽  
Author(s):  
Nazli Rahmanian ◽  
Seunghyun Kim ◽  
Yongbin Lin ◽  
Gregory P. Nordin
Keyword(s):  
Refractive Index ◽  
Ring Resonators ◽  
Compact Ring ◽  
Refractive Index Contrast ◽  
Index Contrast ◽  
Low Refractive Index

Direct laser writing and applications of dielectric microstructures with low refractive index contrast

2011 ◽  
Author(s):  
Vygantas Mizeikis ◽  
Vytautas Purlys ◽  
Lina Maigyte ◽  
Kestutis Staliunas ◽  
Saulius Juodkazis
Keyword(s):  
Refractive Index ◽  
Direct Laser Writing ◽  
Laser Writing ◽  
Refractive Index Contrast ◽  
Direct Laser ◽  
Index Contrast ◽  
Low Refractive Index

Resonant modal analysis and dual-mode tailoring in high refractive index contrast two-dimensional nanorod arrays

Optik ◽  
2019 ◽  
Vol 181 ◽  
pp. 231-238
Author(s):  
Jianyu Zhou ◽  
Tian Sang ◽  
Junlang Li ◽  
La Wang ◽  
Rui Wang ◽  
...  
Keyword(s):  
Refractive Index ◽  
Modal Analysis ◽  
High Refractive Index ◽  
Two Dimensional ◽  
Nanorod Arrays ◽  
Dual Mode ◽  
Refractive Index Contrast ◽  
Index Contrast

Reduction of Refractive Index Contrast Threshold for Photonic Band-Gap in Square Lattices

2005 ◽  
Vol 22 (12) ◽  
pp. 3094-3096
Author(s):  
Wang Jian-Feng ◽  
Huang Yi-Dong ◽  
Zhang Wei ◽  
Peng Jiang-De
Keyword(s):  
Refractive Index ◽  
Band Gap ◽  
Photonic Band Gap ◽  
Contrast Threshold ◽  
Refractive Index Contrast ◽  
Index Contrast ◽  
Photonic Band
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