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Nonlinear optical materials based on fluorinated polyurethane-imides and their application in waveguide devices.
- Source :
- High Performance Polymers; Oct2023, Vol. 35 Issue 8, p785-794, 10p
- Publication Year :
- 2023
-
Abstract
- Two monomers, a second-order nonlinear optical azo chromophore C containing a tricyanofuran electron acceptor and a dihydroxyethyl nitrogen electron donor, and a bisphenol AF-type diether dianhydride (BPAFDA), were designed and synthesized. Fluorinated polyurethaneimide (PUI) electro-optic (EO) waveguide materials were prepared using the synthesized monomers polymerized with 4,4′-diphenylmethane diisocyanate (MDI). The structures of the synthesized chromophore C, BPAFDA, and polymers of PUI were characterized by <superscript>1</superscript>HNMR and FTIR, and the thermal properties of the polymers were characterized by DSC and TGA. The prepared PUI exhibited good film-forming properties with glass transition temperatures (T<subscript>g</subscript>) between 160–169°C and over 300°C at 5% thermal weight loss in a nitrogen atmosphere. The experimental results showed that the fluorinated PUIs possessed an EO coefficient of 56–60 p.m./V at 1550 nm and the optical propagation loss of the polymer waveguide was between 1.3–1.4 dB/cm at 1550 nm. Using PUI as the core material of the waveguides, EO modulators with Mach-Zehnder (MZ) structure were designed and prepared, showing good EO modulation performance at 1550 nm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09540083
- Volume :
- 35
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- High Performance Polymers
- Publication Type :
- Academic Journal
- Accession number :
- 171950816
- Full Text :
- https://doi.org/10.1177/09540083231175974