Paper
19 August 1996 New assembly technique for deeply buried optical waveguides
Alain Mure-Ravaud, Serge Pelissier, Florent Pigeon, B. Biasse, Gregory Pandraud
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Abstract
The growing demand for complex components for integrated- optic requires fabrication methods allowing good reproducibility and a minimized number of processing steps. The ion-exchange technique is attractive because it can be used to make inexpensive and versatile waveguides in glass. To ensure reliable operation, the waveguides have to be buried beneath the surface. Various methods for making buried waveguides are based on field assisted ion exchange with one or more steps in the procedure. We propose a new assembling method in which a buried optical waveguide is obtained by direct bonding of two separate waveguides. We found that direct bonding of preprocessed wafers is a useful and versatile step in the fabrication of integrated optical components. Wafer direct bonding is compatible with VLSI batch technology and device miniaturization therefore low cost combined with high performance can be achieved. Furthermore, a large variety of symmetrical or asymmetrical index profiles is possible and the method allows simultaneous fabrication of many identical optical components. Optical properties of the component are studied and the advantages of this new process are summarized and compared with other techniques.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alain Mure-Ravaud, Serge Pelissier, Florent Pigeon, B. Biasse, and Gregory Pandraud "New assembly technique for deeply buried optical waveguides", Proc. SPIE 2775, Specification, Production, and Testing of Optical Components and Systems, (19 August 1996); https://doi.org/10.1117/12.246788
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KEYWORDS
Waveguides

Semiconducting wafers

Wafer bonding

Integrated optics

Near field optics

Glasses

Ion exchange

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