Improvement of Ridge-type Electro-optical Modulators
Date Issued
2005
Date
2005
Author(s)
Wu, Yi-Kuei
DOI
zh-TW
Abstract
A novel electro-optical (EO) modulator with ridge on the X-cut lithium niobate substrate is proposed. Its simulated driving voltage can be decreased more than 15% in comparison to that of a conventional one. The improvement of driving voltage and overlap integral is noticeable even when the side wall of ridge is tilted. For comparison, a Mach-Zehnder modulator with the improved EO modulator is successfully fabricated, whose measured extinction ratio is 18.5 dB and measured driving voltage is decreased from 3.4V to 2.5V. That is useful for practical application.
Subjects
電光調變器
脊形結構
Electro-optical modulators
Ridge structure
Type
thesis
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