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RESEARCH PRODUCT
Evaluation of performance of a hybrid electro-optic directional coupler and a Mach–Zehnder switch
Edgars Nitisssubject
Physicsbusiness.industryPhotonic integrated circuitEigenmode expansion02 engineering and technologyCondensed Matter PhysicsCladding (fiber optics)Mach–Zehnder interferometerCoupled mode theory01 natural sciencesElectronic Optical and Magnetic Materialslaw.invention010309 optics020210 optoelectronics & photonicsOpticslaw0103 physical sciences0202 electrical engineering electronic engineering information engineeringPower dividers and directional couplersHybrid couplerbusinessWaveguidedescription
The efficiency of an electro-optic (EO) directional coupler (DC) and a Mach–Zehnder (MZ) switch is discussed. The specific designs employ a passive waveguide core and an EO cladding. The performance of a DC switch was evaluated by numerical methods, namely coupled mode theory (CMT), eigenmode expansion (EME) method, and beam envelope method. Using the CMT and EME methods, it is shown that in the DC with a passive waveguide core and EO cladding at certain waveguide parameters the switching effect does not take place. The effect is demonstrated for the first time and suggests that careful optimization of the DC switch should be done before experimental realization of the device. The efficiency of an optimized DC switch is shown to be of an order lower than that of an MZ switch.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-03-09 | Journal of Nanophotonics |