Digital optical phase control in ridge-waveguide phase modulators

Author

Vawter, G. Allen ; Hietala, Vincent M. ; Kravitz, Stanley H.

Author_Institution

Sandia Nat. Lab., Albuquerque, NM, USA

Volume

5

Issue

3

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

313

Lastpage

315

Abstract

The authors report a digital optical phase modulation concept based on depletion-edge-translation p-n junction GaAs/AlGaAs ridge-waveguide modulators. Digital modulation is achieved by integrating in series several discrete waveguide modulators with lengths related by successive factors of two. To illustrate the concept, the authors fabricated and demonstrated a three-bit digital phase modulator with 45 degrees resolution. This structure represents the first photonic integrated circuit that performs direct digital-electronic to analog-optical conversion.<>

Keywords

III-V semiconductors; aluminium compounds; electro-optical devices; gallium arsenide; integrated optics; optical modulation; phase modulation; GaAs-AlGaAs; depletion-edge-translation p-n junction; digital optical phase modulation; digital-electronic to analog-optical conversion; optical modulators; optical phase control; optical waveguides; photonic integrated circuit; ridge-waveguide phase modulators; semiconductors; three-bit digital phase modulator; Digital modulation; Gallium arsenide; Optical control; Optical modulation; Optical variables control; Optical waveguides; P-n junctions; Phase control; Phase modulation; Photonic integrated circuits;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.205622

Filename

205622