材料科学
铌酸锂
电光调制器
光学
光调制器
插入损耗
调制(音乐)
光纤
光电子学
波导管
相位调制
物理
声学
相位噪声
作者
Mengke Wang,Junhui Li,Kaixin Chen,Zhefeng Hu
出处
期刊:Optics Express
[The Optical Society]
日期:2020-06-29
卷期号:28 (15): 21464-21464
被引量:17
摘要
We propose a low-insertion-loss electro-optic modulator formed with LNOI bonded on a D-shaped SMF. The proposed modulator employs high-performance Mach-Zehnder interferometer (MZI) formed with ridge LNOI waveguides and driven by travelling-wave electrodes. The light from the fiber core is coupled into a thin strip LNOI waveguide and then launched into the MZI via a ridge LNOI waveguide with tapered slab height and vice versa. Such all-fiber configuration exempts the need of the butt-coupling with an SMF. The calculated results show that our proposed modulator is capable of achieving a low insertion loss of less than 1.5 dB, an EO modulation efficiency (Vπ·L) of 2.05 V·cm, and a 3-dB modulation bandwidth of larger than 80 GHz. Our all-fiber LNOI modulator is feasible in practice and opens a new door to realize high-speed fiber devices by the integration of an optical fiber and thin film LN.
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