Polarization selective phase modulator in LiNbO/sub 3/

Author

Stubbe, Raoul ; Edwall, Gunnar ; Sahlgren, Bengt ; Svahn, Lars ; Granestrand, Per ; Thylén, Lars

Author_Institution

R. Inst. of Technol., Stockholm, Sweden

Volume

2

Issue

3

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

187

Lastpage

190

Abstract

An integrated optical phase modulator which selectively modulates only one mode of polarization is discussed. Selectivity is accomplished by controlling the ratio between the voltages applied to two different electrode sections. A method for determining the correct ratio and evaluating the polarization selectivity of the phase modulation Gamma has been developed. Experimentally, a Gamma of 46 dB for selective modulation in the TM direction and a corresponding value of 40 dB for the TE direction have been obtained. It is also shown that the concept is a possible alternative or complement to polarizers and polarization preserving components in optical sensors.

Keywords

integrated optics; light polarisation; lithium compounds; optical modulation; LiNbO/sub 3/; TE direction; TM direction; electrode section voltage ratios; electrode sections; integrated optical phase modulator; optical sensors; phase modulation; polarisation modes; polarisation selective phase modulators; polarization preserving components; polarization selectivity; polarizers; selective modulation; Frequency; Optical devices; Optical filters; Optical modulation; Optical polarization; Optical sensors; Optical signal processing; Optical waveguides; Phase modulation;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.50885

Filename

50885