Nlo Polymer Material Systems for Electro-Optic Devices

1995 ◽  
Vol 413 ◽  
Author(s):  
J. T. Kenney ◽  
J. C. Nurse ◽  
J. C. Chon ◽  
E. S. Binidey ◽  
M. Stiller ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Communication Systems ◽  
High Speed ◽  
High Thermal Stability ◽  
Side Chain ◽  
Electronic Systems ◽  
Material System ◽  
Electro Optic ◽  
Non Linear ◽  
Linear Optical

ABSTRACTNon linear optical (NLO) polymers have great potential to be fabricated into integrated electro-optic (E/O) devices for use as high speed electro-optic (E/O) switches, modulators and interconnects in computer and communication systems [1,2]. The fabrication of practical integrated E/O devices requires a material system that meets the final device requirements and can be processed using standard fabrication technologies [3]. Applications of polymer E/O devices in electronic systems have been limited by the relatively low thermal stability and poor processability of non linear optical (NLO) polymers. This paper describes a thermally stable electro-optic material system and the fabrication process to make compact integrated E/O devices for application in electronic systems. This material system consists of high thermal stability polyimide core and cladding materials. The active NLO material is a side chain polyimide that uses a new high activity and high thermal stability chromophore.

Electro‐optic side‐chain polyimide system with large optical nonlinearity and high thermal stability

1994 ◽  
Vol 64 (17) ◽  
pp. 2197-2199 ◽  
Author(s):  
Wataru Sotoyama ◽  
Satoshi Tatsuura ◽  
Tetsuzo Yoshimura
Keyword(s):  
Thermal Stability ◽  
Optical Nonlinearity ◽  
High Thermal Stability ◽  
Side Chain ◽  
Electro Optic

Dielectric Relaxation Spectroscopic Measurements on a Novel Electroactive Polyimide

1999 ◽  
Vol 600 ◽  
Author(s):  
Saadi Abdul Jawad ◽  
Abdalla Alnajjar ◽  
Mamoun M. Bader
Keyword(s):  
Activation Energy ◽  
Thermal Stability ◽  
Dielectric Constant ◽  
Electric Modulus ◽  
High Thermal Stability ◽  
Side Chain ◽  
Electrical Behavior ◽  
Frequency Range ◽  
Kcal Mole ◽  
Electro Optic

AbstractAC electrical behavior of a novel aromatic electro-optic polyimide was investigated in the temperature range 25 °C to 300 °C and a frequency range from 1 Hz to 106 Hz. Three electrical quantities: impedance, permittivity and electric modulus are reported. The dependence of imaginary and real components of these quantities on temperature and frequency are discussed. The experimental results show that the polymer has high thermal stability below 200 °C, where the resistivity, dielectric constant and permittivity are nearly temperature-independent indicating highly rigid structure. Above this temperature, however, a well-defined broad peak corresponding to a relaxation process was observed for which the activation energy was calculated to be 8.5 Kcal/mole. This relaxation is associated with a restricted local rotational motion of the side chain chromophore.

Materials Requirements for Electro-Optic Polymers (for electronic systems applications)

1992 ◽  
Vol 247 ◽  
Author(s):  
Rick Lytel ◽  
George F. Lipscomb
Keyword(s):  
Thermal Stability ◽  
Integrated Optics ◽  
Polymer Material ◽  
Basic Research ◽  
Polymer Materials ◽  
Core Material ◽  
Electronic Systems ◽  
Material System ◽  
Active Core ◽  
Electro Optic

ABSTRACTThe field of electro-optic (EO) polymer materials for integrated optics has been developing rapidly during the past several years. Recent advances include the formulation of poled crosslinked epoxies and guest-host polyimides exhibiting thermal stability at temperatures significantly higher than that previously achieved with thermoplastic acrylate chemistry. These developments are an essential first step toward achieving practical materials exhibiting stability to manufacture, assembly, and end-use in modern electronic systems applications.Despite these developments, there is still much basic research to be performed to achieve a practical EO polymer material system. A polymer material system for integrated optics consists of a set of three compatible materials: cladding polymers, passive core polymers, and active core polymers. The three materials should ideally be derived from the same base polymer so that the layers of the entire waveguide structure have nearly identical thermal, mechanical, chemical, electrical, and optical properties. In an ideal syst', the active core material would consist of passive materials highly loaded with aligned nonlinear optical moieties exhibiting large hyperpolarizabilities and suitable size and shape for thermal stability.This paper provides a detailed review of the material requirements for EO polymer waveguide devices in electronic systems and points to new areas of research required for practical systems.

Sol-gel process of non-linear optical silica films with organic chromophore as side chain

1996 ◽  
Vol 31 (9) ◽  
pp. 2443-2446 ◽  
Author(s):  
Po-Hou Sung ◽  
Shao-Ling Wu ◽  
Chien-Yang Lin
Keyword(s):  
Sol Gel ◽  
Side Chain ◽  
Silica Films ◽  
Sol Gel Process ◽  
Non Linear ◽  
Linear Optical ◽  
Organic Chromophore

Integrated Photonic Circuits in Gallium Nitride and Aluminum Nitride

2014 ◽  
Vol 23 (01n02) ◽  
pp. 1450001 ◽  
Author(s):  
Chi Xiong ◽  
Wolfram Pernice ◽  
Carsten Schuck ◽  
Hong X. Tang
Keyword(s):  
High Speed ◽  
Optical Signal ◽  
Silicon Substrates ◽  
Material System ◽  
Group Iii ◽  
Electro Optic ◽  
New Material ◽  
Nanophotonic Circuits ◽  
Group Iii Nitride ◽  
On Chip

Integrated optics is a promising optical platform both for its enabling role in optical interconnects and applications in on-chip optical signal processing. In this paper, we discuss the use of group III-nitride (GaN, AlN) as a new material system for integrated photonics compatible with silicon substrates. Exploiting their inherent second-order nonlinearity we demonstrate and second, third harmonic generation in GaN nanophotonic circuits and high-speed electro-optic modulation in AlN nanophotonic circuits.

Electro-Optic and Non-Linear Optical Coefficients of (Pb, La)(Zr, Ti)O3, BaTiO3, (Sr, Ba)Nb2O6 and Ba2NaNb5O15 Thin Films

1990 ◽  
Vol 200 ◽  
Author(s):  
A. Y. Wu ◽  
Feiling Wang ◽  
Ching-Bo Juang ◽  
Carlos Bustamante
Keyword(s):  
Thin Films ◽  
Physical Properties ◽  
Higher Order ◽  
Fused Silica ◽  
Optical Polarization ◽  
Electro Optic ◽  
Non Linear ◽  
Confocal Scanning ◽  
Linear Optical ◽  
Sputter Deposited

ABSTRACTThe electro-optic properties of sputter-deposited PLZT, BaTiO3, SBN, and BNN films on fused silica substrates have been studied using a confocal scanning optical polarization microscope. The Pockels, Kerr, and higher order electro-optic coefficients and their relations to the non-linear optical coefficients in the films are presented. The materials and physical properties of the films are discussed.

Electro-optical and pyroelectrical thermal analysis of novel nonlinear optical side-chain polymers with high thermal stability

1994 ◽  
Author(s):  
Reimund Gerhard-Multhaupt ◽  
Stefan Bauer ◽  
Wolf-Dietrich Molzow ◽  
W. Ren ◽  
Werner Wirges ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Thermal Analysis ◽  
Nonlinear Optical ◽  
High Thermal Stability ◽  
Side Chain

New Host-Guest Polymeric System for Thermal Stability Enhancement of Electro Optic Effect

2002 ◽  
Vol 725 ◽  
Author(s):  
Seung Koo Park ◽  
Jung Yun Do ◽  
Jung-Jin Ju ◽  
Suntak Park ◽  
Myung-Hyun Lee
Keyword(s):  
Thermal Stability ◽  
Model Compound ◽  
Main Chain ◽  
Side Chain ◽  
Hydroxyl Groups ◽  
New Host ◽  
Polymer Main Chain ◽  
Electro Optic ◽  
Chromophore Concentration ◽  
Stability Enhancement

AbstractA new host-guest electro optic (EO) polymer, in which a chromophore can be reacted with the polymer main chain during poling to give the corresponding side-chain EO polymer, has been prepared for improving EO effect and its thermal stability. Polyisoimide (PII) synthesized from 2, 2-bis (4-aminophenyl) hexafluoropropane and oxydiphthalic anhydride and Disperse Red 1 (DR1) were used as a host and a guest, respectively. A model compound reaction and Infrared spectra of the host-guest film after annealing at various temperatures show that the reaction between the isoimide groups in PII and the hydroxyl groups in DR1 occurs around 140 °C. The glass transition temperatures of the resulting EO polyamic aicd ester-imide copolymer with 0, 10, 20 and 30 wt. % of chromophore concentration were 275, 219, 160, and 124 °C, respectively. The EO coefficient obtained at a wavelength of 1.55 νm was 5.3 and 10.5 pm/V from the EO polymer film with 20 and 30 wt. % DR1. The EO signals exhibited only a slight decay at high temperature due to the chemical reaction between the host and guest during poling.

Recent Progress of Electro-optic Polymers for Device Applications

1997 ◽  
Vol 488 ◽  
Author(s):  
Alex K-Y. Jen ◽  
Qing Yang ◽  
Seth R. Marder ◽  
Larry R. Dalton ◽  
Ching-Fong Shu
Keyword(s):  
Data Storage ◽  
High Speed ◽  
Stable State ◽  
Optical Data Storage ◽  
Device Fabrication ◽  
Optical Data ◽  
Material System ◽  
Electro Optic ◽  
Potential Applications ◽  
Device Applications

AbstractElectro-optic (E-O) polymers have drawn great interest in recent years because of their potential applications in photonics devices such as high speed modulators and switches, optical data storage and information processing1–2. In order to have suitable materials for device fabrication, it is essential to design and develop polymeric material systems (active and passive polymers) with matched refractive indices, large E-O coefficients, good temporal and photochemical stability3–8 The E-O response of an active polymer commonly arises from the electric field induced alignment of its second-order nonlinear optical (NLO) chromophore, either doped as a guest/host system or covalently bonded as a side-chain. Because of the strong interaction among the electric dipoles, the poled structure is in a meta-stable state; the poled NLO chromophores which possess large dipole moment will tend to relax back to the randomly oriented state. As a result, the stability of the poled structure strongly depends on the rigidity of the overall material system. As it might be expected, the continuous increases of the rigidity and Tg of poled polymers imposes constraints on the selection of suitable chromophores that can survive the hightemperature poling and processing conditions. To circumvent this problem, we have developed a series of chromophores that possess conformation-locked geometry and perfluoro-dicyanovinylsubstituted electron-accepting group which demonstrate both good thermal stabilty and nonlinearity. This paper provides a brief review of these highly efficient and thermally stable chromophores and polymers for device applications.

Sign in / Sign up

Export Citation Format

Share Document