Title :
High-speed and low-driving-Voltage thin-sheet X-cut LiNbO3 Modulator with laminated low-dielectric-constant adhesive
Author :
Jungo Kondo ; Aoki, Kenji ; Kondo, Atsuo ; Ejiri, Tetsuya ; Iwata, Yuuichi ; Hamajima, Akira ; Mori, Tsutomu ; Mizuno, Yukio ; Imaeda, Minoru ; Kozuka, Yoshinari ; Mitomi, Osamu ; Minakata, Makoto
Author_Institution :
NGK Insulators Ltd., Aichi, Japan
Abstract :
We present a novel thin-sheet X-cut LiNbO3 optical modulator structure which can be fabricated by precise polishing and lapping to obtain a thinner LiNbO3 substrate for a lower driving voltage in addition to velocity matching and impedance matching. We demonstrated that the fabricated modulator had a driving voltage Vπ of 2 V and zero chirp for 40-Gb/s operation and had a high potential for suppressed dc drift, and long-term reliability.
Keywords :
adhesives; electro-optical modulation; high-speed optical techniques; impedance matching; integrated optoelectronics; laminates; lapping (machining); lithium compounds; optical fibre communication; permittivity; 40 Gbit/s; LiNbO3; LiNbO3 substrate; X-cut LiNbO3 modulator; high-speed modulator; impedance matching; laminated adhesive; lapping; long-term reliability; low-dielectric-constant adhesive; low-driving-voltage modulator; polishing; suppressed dc drift; thin-sheet modulator; velocity matching; zero chirp; Chirp modulation; Electrodes; High speed optical techniques; Impedance matching; Lapping; Optical films; Optical modulation; Substrates; Thermal stresses; Voltage; Integrated optoelectronics; optical fiber communication; optical modulation; optical waveguides; optoelectronic devices;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.856324
