Optical waveguide device

• Main Authors: ICHIKAWA, JUNICHIRO, HONDA, HIDEKI, SAKAMOTO, TOSHIHIRO, KOBAYASHI, MASANOBU, NAGATA, HIROTOSHI, SHINRIKI, TAKASHI, KIUCHI, KAZUMASA, MINOWA, JUNICHIRO, SHIMOTSU, SHINICHI, NAYYER, JAMSHID, YAMADA, MANABU, OGIWARA, JUNICHI
• Format: Patent
• Language: English; French; German
• Published: 10.05.1995
• Edition: 6
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

An optical waveguide device usable as an optical wave-modulator and having a reduced DC drift includes a LiNbO3 substrate (7), an optical waveguide formed in a front surface portion of the substrate, a dielectric layer (8) covering the front surface of the substrate and the optical waveguide surface, and an electrode system (5,6a,6b) arranged on the dielectric layer (8), the dielectric layer (8) comprising a matrix component consisting of an amorphous SiO2 and a doping element component consisting of Li and/or Nb; and having a refractive index lower than that of the amorphous SiO2 matrix free from the doping element component.