Thermal stability enhancement of electrooptic polymer modulator

Author

Park, Suntak ; Ju, Jung Jin ; Do, Jung Yun ; Park, Seung Koo ; Myung-Hyun Lee

Author_Institution

Basic Res. Lab., ETRI, Taejon, South Korea

Volume

16

Issue

1

fYear

2004

Firstpage

93

Lastpage

95

Abstract

We synthesized a novel electrooptic (EO) polymer with good thermal stability and high optical nonlinearity. The EO polymer has a side-chain structure of a hyper-branched chromophore in polyetherimide. In order to improve the thermal stability, the EO polymer has been designed to have a high glass transition temperature (178°C). The hyper-branched chromophores induced a large EO coefficient (35 pm/V at 1550 nm). An optical intensity modulator based on the EO polymer was demonstrated. The measured half-wave voltage was 8.5 V and the extinction ratio was 18 dB. The modulator showed good thermal stability at 125°C.

Keywords

electro-optical modulation; glass transition; intensity modulation; optical communication equipment; optical polymers; thermal stability; 125 degC; 1550 nm; 178 degC; 8.5 V; electrooptic polymer modulator; extinction ratio; glass transition temperature; good thermal stability; half-wave voltage; high optical nonlinearity; hyper-branched chromophore; large EO coefficient; optical intensity modulator; polyetherimide; side-chain structure; thermal stability enhancement; Electrooptic devices; Electrooptic modulators; Glass; Intensity modulation; Nonlinear optics; Optical modulation; Optical polymers; Optical signal processing; Temperature; Thermal stability;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.818925

Filename

1255962