High Glass Waveguide Multi/Demultiplexers with Small Device Size and Low Wavelength Response Sensitivity

Senichi SUZUKI  Satoshi SEKINE  Keizo SHUTO  Yasushige UEOKA  Isao NISHI  

IEICE TRANSACTIONS (1976-1990)   Vol.E73   No.1   pp.99-104
Publication Date: 1990/01/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section PAPER (Special Issue on International Conference on Integrated Optics and Optical Fiber Communication)
Category: Optical Waveguides and Their Devices

Full Text: PDF(547.2KB)>>
Buy this Article

Small-size directional coupler type optical multi/demultiplexers using high refractive-index-difference composite-glass waveguides have been investigated. A novel design to minimize wavelength response sensitivity to waveguide width deviation in the coupler part was proposed. Composite glass waveguides with 5% were fabricated using Corning 7059 glass for the core and SiO2 for the cladding. 1.3/1.55-µm optical multi/demultiplexers with short coupler length of 300 µm, low insertion loss of 5 dB and high crosstalk attenuation of more than 25 dB were realized.