摘要
By using the proposed 3-D mode propagation analysis method and point-matching method, a polymer multimode interference (MMI) Mach-Zehnder interferometer (MZI) electro-optic (EO) switch is designed and optimized for enhancing the EO modulating efficiency and matching the impedance and the velocity. The designed switch possesses low driving voltages of ±1.375 V with a short EO active region length of 5 mm under 1550 nm wavelength, and the estimated cutoff switching frequency is up to 263 GHz due to the less mismatch between the lightwave velocity and microwave velocity. The 3-dB lightwave bandwidth is 60 nm, and within the wavelength range of 1520-1580 nm, the insertion loss and crosstalk are less than 6.71 and -30 dB, respectively.
By using the proposed 3-D mode propagation analysis method and point-matching method, a polymer multimode interfer- ence （MMI） Mach-Zehnder interferometer （MZI） electro-optic （EO） switch is designed and optimized for enhancing the EO modulating efficiency and matching the impedance and the velocity. The designed switch possesses low driving volt- ages of ±1.375 V with a short EO active region length of 5 mm under 1550 nm wavelength, and the estimated cutoff switching frequency is up to 263 GHz due to the less mismatch between the lightwave velocity and microwave velocity. The 3-dB lightwave bandwidth is 60 nm, and within the wavelength range of 1520-1580 nm, the insertion loss and crosstalk are less than 6.71 and -30 dB, respectively.
基金
supported by the National Natural Science Foundation of China (No. 60706011)
the Ministry of Education of China (Nos.20070183087 and 20090061110041)
the Science and Technology Department of Jilin Province of China (No. 20080125)
the Major StateBasic Research Development Program of China (No. 2006CB302803)
