Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1535476 | Optics Communications | 2013 | 10 Pages |
Abstract
A novel non-resonance 2Ã2 polymer electro-optic (EO) switch with flatting spectral response is proposed by employing two-section reversed active Mach-Zehnder interferometers (MZIs), a passive middle directional coupler (M-DC) and two passive phase generating couplers (PGCs). Two crosstalk compensations are performed by optimizing the PGCs to broaden the spectrum under bar-state and optimizing the two active MZIs to broaden the spectrum under cross-state. The bar-state and cross-state voltages are 0 and ±4 V, respectively, with the two optimized MZI EO region lengths of 4068 and 5941 μm. Sufficiently considering wavelength dispersion of material and waveguide, a wide spectrum over 130 nm (1473-1603 nm) is achieved for dropping the crosstalk below â30 dB, and within this range, an insertion loss of 1.8-12.3 dB is observed. Under the same crosstalk level, this spectrum is over 2 times of that of the traditional 2Ã2 MZI switch (60 nm) based on the same materials. This broadband 2Ã2 switch is more attractive than our previously reported broadband 1Ã1 switch due to cross/bar routing operations other than simple ON/OFF functions.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Chuan-Tao Zheng, Li-Hua Zheng, Qian-Qian Luo, Lei Liang, Chun-Sheng Ma, Da-Ming Zhang,