Marpaung David, Roeloffzen Chris, Leinse Arne, Hoekman Marcel
Telecommunication Engineering Group, University of Twente, Enschede, the Netherlands.
Opt Express. 2010 Dec 20;18(26):27359-70. doi: 10.1364/OE.18.027359.
We report a high performance phase modulation direct detection microwave photonic link employing a photonic chip as a frequency discriminator. The photonic chip consists of five optical ring resonators (ORRs) which are fully programmable using thermo-optical tuning. In this discriminator a drop-port response of an ORR is cascaded with a through response of another ORR to yield a linear phase modulation (PM) to intensity modulation (IM) conversion. The balanced photonic link employing the PM to IM conversion exhibits high second-order and third-order input intercept points of + 46 dBm and + 36 dBm, respectively, which are simultaneously achieved at one bias point.
我们报道了一种采用光子芯片作为鉴频器的高性能相位调制直接检测微波光子链路。该光子芯片由五个光学环形谐振器（ORR）组成，这些谐振器可通过热光调谐实现完全可编程。在这个鉴频器中，一个ORR的下路端口响应与另一个ORR的直通响应级联，以实现线性相位调制（PM）到强度调制（IM）的转换。采用PM到IM转换的平衡光子链路分别具有+46 dBm和+36 dBm的高二阶和三阶输入截点，这两个截点在一个偏置点上同时实现。
