DocumentCode
1505139
Title
Improved electrooptic modulator with ridge structure in X-cut LiNbO 3
Author
Chang, Shih-Jung ; Tsai, Ching-Long ; Lin, Yih-Bin ; Liu, Ju-Feng ; Wang, Way-Seen
Author_Institution
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Volume
17
Issue
5
fYear
1999
fDate
5/1/1999 12:00:00 AM
Firstpage
843
Lastpage
847
Abstract
A ridge-type Mach-Zehnder modulator on X-cut LiNbO3 is fabricated by wet etching with proton-exchange pretreatment. Experimental results show that, with the assistance of the ridge structure, the drive voltage of the proposed modulator is reduced. The enhancement of overlap integral caused by ridge structure is also validated from numerical simulation. Moreover, an improved design to further reduce the drive voltage of the ridge-type Mach-Zehnder is proposed by a proper placement of waveguide relative to the electrode
Keywords
electro-optical modulation; electrodes; etching; integrated optics; lithium compounds; optical fabrication; optical waveguides; ridge waveguides; LiNbO3; X-cut LiNbO3; drive voltage; electrode; electrooptic modulator; numerical simulation; optical waveguide; overlap integral; proton-exchange pretreatment; ridge structure; ridge-type Mach-Zehnder modulator; wet etching optical fabrication; Dry etching; Electrodes; Electrooptic modulators; Electrooptical waveguides; Optical modulation; Optical waveguide theory; Optical waveguides; Voltage; Waveguide discontinuities; Wet etching;
fLanguage
English
Journal_Title
Lightwave Technology, Journal of
Publisher
ieee
ISSN
0733-8724
Type
jour
DOI
10.1109/50.762902
Filename
762902
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