MEMS WDM Routers Using Analog Micromirror Arrays
نویسندگان
چکیده
There have been increasing interests in programmable optical add-drop multiplexers (OADM) and wavelength-selective switches in wavelength-division-multiplexed (WDM) networks. Conventional OADM has one input and one output channels, in addition to an add and a drop channels [l]. It is also called 1x1 OADM. Dynamic OADM with more than one output ports offers greater flexibility and functionality for WDM networks [2,3]. We call this type of devices WDM Routers. They are also called 1xN wavelength-selective switches or multi-port OADM. They enable new network topologies. For example, meshed rings that offer greater capacity and higher level of protection can be realized using WDM Routers. In this paper, we report on our recent experimental results of the WDM Routers employing a novel analog micromirror array. Using a hidden comb drive actuator with high force density, large scan angles are achieved with at low voltages. We also report on the stability and repeatability of the WDM Router. Less than *.0035 dB variations in system insertion loss have been achieved over three hours of open-loop operation [4].
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