Grating Assisted InGaAsP/InP Vertical Co-directional Coupler Filter
Grating Assisted InGaAsP/InP Vertical Co-directional Coupler Filter
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光栅辅助 InGaAsP/InP 垂直同向耦合器滤波器
DOI：
10.1063/1.102148
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
M. Martyak
中科院分区：
文献类型：
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作者：
R. Alferness;T. Koch;L. Buhl;F. Storz;F. Heismann;M. Martyak
目前，人们对基于波分复用技术的光波网络非常感兴趣。此类系统以及其他应用（例如光放大器的噪声滤波器）将需要紧凑的、可能可调谐的波长滤波器装置。此外，如果这些设备可以与光电探测器或光放大器单片集成，则可能会带来更多好处。为了实现这一目标，我们首次展示了一种波长选择性耦合器，该耦合器基于 InP 上不同的垂直堆叠 InGaAsP 波导之间的正向耦合，使用蚀刻波纹层进行相位匹配。我们使用 14.4 μm 的光栅周期实现了 3 dB 带宽（半高全宽）为 65Å 的带通滤波器响应，交互长度仅为 1.0 mm。
Presently there is great interest in lightwave networks based upon wavelength division multiplexing techniques. Such systems, as well other applications such as noise filters for optical amplifiers, will require compact, possibly tunable wavelength filter devices. In addition, further benefits may result if these devices could be monolithically integrated with photodetectors or optical amplifiers. Toward that goal we have demonstrated, for the first time, a wavelength selective coupler based upon forward coupling between nonidentical, vertically stacked InGaAsP waveguides on InP using an etched corrugated layer for phase matching. We have achieved a bandpass filter response with a 3 dB bandwidth (full width at half maximum) of 65Å with an interaction length of only 1.0 mm using a grating period of 14.4 μm.