Proposal of arrayed waveguides optical deflector and wavelength divide optical switch
Proposal of arrayed waveguides optical deflector and wavelength divide optical switch
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阵列波导光偏转器和波分光开关的提出
DOI：
10.1117/12.433292
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
K. Shimomura
中科院分区：
文献类型：
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作者：
Y. Kawakita;T. Kihara;Kazunori Miki;K. Shimomura
我们提出了一种利用MOVPE选区生长的具有不同折射率的阵列光波导的光学偏转器。通过在阵列波导的两侧放置不对称宽度的SiO_2掩模图案，阵列中每个波导的厚度逐渐变化。而每个阵列波导中的相变导致了光的偏转。在该器件中，我们数值计算并制作了1xN多模干涉(MMI)星形耦合器，采用GaInAs/InP MQW结构对每个阵列波导均匀地输入光。通过数值计算，得到了1×16多模干涉光波导中各波导输出光功率的0.42dB起伏。在实验中，我们采用GaInAs/InP多量子阱结构制作了1×16多模干涉光波导，在1.56μm波长的入射光下，获得了0.88dB光的起伏。在此基础上，对该器件的波长解复用和交换性能进行了数值计算。给出了8根两侧折射率差为1.0%的阵列光波导的输出功率随波长的变化关系。通过这一分析，我们可以通过控制阵列波导中的折射率来交换每个波长的输出端口。
We have proposed the optical deflector using arrayed waveguides that have different refractive index fabricated by MOVPE selective area growth. By placing the asymmetric width of SiO2 mask pattern on both sides of the arrayed waveguide, the thickness of each waveguide in the array has changed gradually. And the phase change in each arrayed waveguide results the deflection of the light. In this device, we have numerically calculated and fabricated the 1xN multi-mode interference (MMI) star coupler using GaInAs/InP MQW structure to input the light equally for each arrayed waveguide. From the numerical calculation, we obtain 0.42dB fluctuation of the output light power in each waveguide in the 1x16 MMI waveguide. In the experiment, we fabricated the 1x16 MMI waveguide using GaInAs/InP MQW structure, and 0.88dB fluctuation of the output light was obtained for the 1.56μm wavelength input light. And further, we have numerically calculated the wavelength demultiplexing and switching performance in this device. We have obtained the wavelength dependence of output power in 8 arrayed waveguides that have 1.0% refractive index difference in both sides of the arrayed waveguide. From this analysis, we can exchange the output ports of each wavelength by controlling the refractive index in the arrayed waveguide.