Optical switch based on cascaded SOI nonlinear directional coupler

• Autorzy: Tao Q. , Luo F. , Cai D. , Liang Q. , Wan Z. , Song X. , Liu X.
• Języki publikacji: EN

Abstrakty

EN

In this paper, we calculate three effective refractive indexes for cascaded silicon-on-insulator (SOI) nonlinear directional coupler. For each effective refractive index, the coupling length LC, core-to-distance-ratio K and switching threshold power Pi, m are calculated, respectively. However, there are some fabrication errors, which are ?W, ?H, ?K in the height of Si layer and width of Si layer and error of core-to-distance-ratio. We have analyzed the influence of power transmission efficiency Ti, j and relative transmission efficiency error ?i, j caused by the change of ?W, ?H, ?K. Furthermore, we find the tolerance range of ?W, ?H, ?K for Ti, j and ?i, j in couplers a, b, c. The other four input pulses with different powers are switched to four different ports. Although output pulses show some little compression and loss, the value of ? is very small and output pulse waveforms are not affected seriously. The basic switching function has been realized, so this design is proved to be effective.

Słowa kluczowe

EN

silicon-on-insulator (SOI); vector finite element; discrete split-step multi-wavelet transfor-mation; coupled nonlinear Schrödinger equation (CNLSE)

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2011
• Tom: Vol. 41, nr 3
• Strony: 669--678
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Tao Q.

autor

Luo F.

autor

Cai D.

autor

Liang Q.

autor

Wan Z.

autor

Song X.

autor

Liu X.

• Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Bibliografia

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