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Ti-Diffused Optical Waveguide with Thin LiNbO3 Structure for High-Speed and Low-Drive-Voltage Modulator Jungo KONDO Kenji AOKI Tetsuya EJIRI Yuichi IWATA Akira HAMAJIMA Osamu MITOMI Makoto MINAKATA Publication IEICE TRANSACTIONS on Communications Vol.E89-B No.12 pp.3428-3429 Publication Date: 2006/12/01 Online ISSN: 1745-1345 DOI: 10.1093/ietcom/e89-b.12.3428 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Devices/Circuits for Communications Keyword: optical modulation, optical waveguides, optical communication, optoelectronic devices, Full Text: PDF(313.5KB)>>
Summary: We examined a Ti-diffused optical waveguide formed on a thin X-cut LiNbO3 substrate for a lower-drive-voltage modulator. Under the single-mode condition, optical mode-size decreases with LiNbO3 substrate thickness below 10 µm. A thin-sheet LiNbO3 modulator could achieve a low-drive-voltage of 1.3 V with a bandwidth of 15 GHz by adopting a narrow electrode-gap. | |||||
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