Frequency measurement of THz waves by electro-optic sampling using Mach-Zehnder-modulator-based flat comb generator

2016 ◽  
Author(s):  
Isao Morohashi ◽  
Mayu Kirigaya ◽  
Yuta Kaneko ◽  
Ikufumi Katayama ◽  
Takahide Sakamoto ◽  
...  
Keyword(s):  
Frequency Measurement ◽  
Electro Optic ◽  
Mach Zehnder Modulator ◽  
Thz Waves

scholarly journals High-accuracy Photonics-assisted Frequency Measurement With Rough-accurate Compensation Based on Mach-Zehnder Interfering and Power Cancellation

2021 ◽  
Author(s):  
Lanfeng Huang ◽  
Yongjun Li ◽  
Shanghong Zhao ◽  
Tao Lin ◽  
Guodong Wang ◽  
...  
Keyword(s):  
Frequency Estimation ◽  
Frequency Measurement ◽  
High Accuracy ◽  
Optical Field ◽  
Comparison Function ◽  
Multiple Frequency ◽  
Frequency Identification ◽  
Mach Zehnder Modulator ◽  
Rf Signal ◽  
Polarization Division Multiplexing

Abstract A high-accuracy photonics-assisted frequency measurement with rough-accurate compensation based on Mach-Zehnder interfering and power cancellation is proposed. A polarization division multiplexing dual-parallel Mach–Zehnder modulator (PDM-DPMZM) is employed to mix the unknown RF signal and sweep signal to optical field. The rough measurement is firstly performed by the interference of a Mach-Zehnder interferometer (MZI) to realize fast frequency estimation. Then, based on the rough measurement result, the accurate measurement based on power cancellation is implemented in a much narrower range, which greatly improves the efficiency of frequency measurement. The simulation results show that the amplitude comparison function (ACF) established by interference can achieve a measurement error of less than 0.3 GHz over 0.5 ~39 GHz. Moreover, thanks to the rough-accurate compensation, the accuracy can be further improved to 4 MHz. Additionally, the multiple frequency identification with a resolution of 10 MHz can also be achieved based on this system.

20 GHz electro‐optic polymer Mach–Zehnder modulator

1991 ◽  
Vol 58 (16) ◽  
pp. 1730-1732 ◽  
Author(s):  
D. G. Girton ◽  
S. L. Kwiatkowski ◽  
G. F. Lipscomb ◽  
R. S. Lytel
Keyword(s):  
Electro Optic ◽  
Mach Zehnder Modulator

scholarly journals Nonlinear intermodulation distortion suppression in coherent analog fiber optic link using electro-optic polymeric dual parallel Mach-Zehnder modulator

2011 ◽  
Vol 19 (8) ◽  
pp. 7865 ◽  
Author(s):  
Seong-Ku Kim ◽  
Wei Liu ◽  
Qibing Pei ◽  
Larry R. Dalton ◽  
Harold R. Fetterman
Keyword(s):  
Fiber Optic ◽  
Intermodulation Distortion ◽  
Electro Optic ◽  
Mach Zehnder Modulator
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