2x2 polymeric electro-optic MZI switch using multimode interference couplers

H. P. Li; J. K. Liao; X. G. Tang; R. G. Lu; Y. Z. Liu

doi:10.1117/12.837822

24 November 2009 2×2 polymeric electro-optic MZI switch using multimode interference couplers

H. P. Li, J. K. Liao, X. G. Tang, R. G. Lu, Y. Z. Liu

Proceedings Volume 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration; 75090X (2009) https://doi.org/10.1117/12.837822
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

We present the design of a 2×2 photonic switch operating at 1.55-μm wavelength using electro-optic (EO) polymer waveguides. A Mach-Zehnder interferometer (MZI) is used to implement the proposed switch in which two identical 2×2 multimode interference (MMI) couplers are connected by two identical parallel single mode waveguides (two MZI arms). These two single-mode waveguides with electrodes allow modulating the phase difference between the two MZI arms based on the EO effect. In the proposed switch, the EO polymer, IPC-E/polysulfone, is used for the core layer of optical waveguides. UV15 and NOA61 are employed for the lower and upper cladding layers, respectively. The singlemode waveguide structure and 2×2 MMI coupler have been designed and analyzed for the EO switch. Device performance has been simulated using the beam propagation method. It is found that the switch performance is most sensitive to the MMI width and less sensitive to the MMI length. Optimized structure has been obtained for the 2×2 polymeric EO switch, which has a crosstalk level better than -25 dB and insertion loss lower than -1.8 dB. This performance makes the switch a potential candidate for practical use in photonic systems.

Citation Download Citation

H. P. Li, J. K. Liao, X. G. Tang, R. G. Lu, and Y. Z. Liu "2×2 polymeric electro-optic MZI switch using multimode interference couplers", Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 75090X (24 November 2009); https://doi.org/10.1117/12.837822

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