Loss Reduction of Waveguide Crossings by Wavefront Matching Method and Their Application to Integrated Optical Circuits

This paper describes a waveguide crossing design that uses the wavefront matching (WFM) method. The WFM method enables us to design waveguide crossings with lower loss than simple crossings composed of two straight waveguides, without any crosstalk degradation. We report the procedure for designing...

Full description

Saved in:
Bibliographic Details
Published in:Journal of lightwave technology 2009-07, Vol.27 (13), p.2257-2263
Main Authors: Sakamaki, Y., Saida, T., Hashimoto, T., Kamei, S., Takahashi, H.
Format: Article
Language:English
Subjects:
Circuit testing
Circuits
Degradation
Deltas
Design methodology
Devices
Integrated circuit technology
Integrated optics
Matching
Multiplexing
Optical attenuators
Optical crosstalk
Optical losses
optical planar waveguides
Optical waveguides
Planar waveguides
Product life cycle
Programmable control
Wave fronts
waveguide junctions
Waveguides
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper describes a waveguide crossing design that uses the wavefront matching (WFM) method. The WFM method enables us to design waveguide crossings with lower loss than simple crossings composed of two straight waveguides, without any crosstalk degradation. We report the procedure for designing waveguide crossings based on the WFM method and some experimental results. For experimental confirmation, we made a waveguide crossing test circuit using silica-based planar lightwave circuit (PLC) technology. By comparing the results obtained with samples constructed with different Delta waveguides, we show that our design method is very efficient for higher Delta waveguides suitable for high-density integration. In addition, we describe an example application of our designed crossings to an integrated PLC device, namely a wavelength multiplexer with a variable optical attenuator. We show that waveguide crossings designed by the WFM method are useful for improving the loss characteristic of highly integrated PLC devices.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2008.2006411