A1 - Tao, Qing
A1 - Luo, Fengguang
A1 - Cai, Dusi
A1 - Liang, Qianliang
A1 - Wan, Zhengwen
A1 - Song, Xinming
A1 - Liu, Xuechao
A2 - Gaj, Miron. Redakcja
A2 - Urbańczyk, Wacław. Redakcja
PB - Oficyna Wydawnicza Politechniki Wrocławskiej
N2 - 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 ΔW, ΔH, ΔK 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 Δi, j caused by the change of ΔW, ΔH, ΔK. Furthermore, we find the tolerance range of ΔW, ΔH, ΔK for Ti, j and Δi, 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 η 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.
L1 - http://dbc.wroc.pl/Content/58173/015optappl_4103p669.pdf
L2 - http://dbc.wroc.pl/Content/58173
KW - optyka
KW - silicon-on-insulator (SOI)
KW - vector finite element
KW - discrete split-step multi-wavelet transfor-mation
KW - coupled nonlinear Schrödinger equation (CNLSE)
ER -
T1 - Optical switch based on cascaded SOI nonlinear directional coupler
UR - http://dbc.wroc.pl/dlibra/docmetadata?id=58173