Multilevel polarization modulation using a specifically designed LiNbO/sub 3/ device

Author

Benedetto, S. ; Djupsjobacka, A. ; Lagerstrom, B. ; Paoletti, R. ; Poggiolini, P. ; Mijic, G.

Author_Institution

Dipartimento di Elettronica, Politecnico di Torino, Italy

Volume

6

Issue

8

fYear

1994

Firstpage

949

Lastpage

951

Abstract

Binary and multilevel optical polarization modulation (POLSK) is an innovative transmission technique, suitable for both coherent and direct detection. To prove its feasibility, we have built a flexible polarization modulator based on a specifically designed LiNbO/sub 3/ device. We show that it can generate any state of polarization and therefore it is suitable for transmission of any binary or multilevel POLSK constellation. Once electrically equalized, the modulator has a 4 GHz bandwidth. To test the modulator with actual digital modulation, we set up a coherent binary experiment at 800 Mbit/s, and attained a sensitivity 1.5 dB away from the noise limit of the receiver.<>

Keywords

electro-optical devices; integrated optics; light polarisation; lithium compounds; optical modulation; optical receivers; 1550 nm; 4 GHz; 800 Mbit/s; LiNbO/sub 3/; POLSK; binary optical polarization modulation; coherent binary experiment; coherent detection; digital modulation; direct detection; multilevel optical polarization modulation; noise limit; polarization shift keying; receiver; sensitivity; specifically designed LiNbO/sub 3/ device; transmission technique; Electrodes; Fiber nonlinear optics; Nonlinear optics; Optical design; Optical fiber devices; Optical fiber polarization; Optical modulation; Optical polarization; Optical receivers; Polarization shift keying;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.313061

Filename

313061