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We propose a new hierarchical optical cross-connect node architecture that utilizes 3D MEMS-based WSS and WBSS (Waveband Selective Switch). We evaluate the total number of MEMS mirrors necessary to implement the node, a key parameter in determining node reliability and cost. It is demonstrated that the proposed hierarchical architecture requires a lot less mirrors than conventional single-layer WSS...
Silica waveguide planar lightwave circuit (PLC) technology is very useful for fabricating the compact and high performance optical devices used in transparent and flexible networks. Wavelength multiplexers and optical switches for ROADM and OXC are still being developed to achieve higher performance and they are integrated to provide the compactness required for future applications. New devices for...
This paper overviews the recent progress and future prospects for photonic transport network technologies from the viewpoints of ROADM (reconfigurable optical add drop multiplexer) functional enhancement for improving the networking agility, expansion of the optical transparent domain, and advanced transmission technologies.
A 10 channel polymer variable optical attenuator array (VOA), which is used for power monitoring and equalization in integrated planar lightwave circuit (iPLC) reconfigurable optical add-drop multiplexer (ROADM) module, is demonstrated. Maximum attenuation of about -41 dB was achieved at very low electrical power of 17 mW and insertion loss was within 0.7~0.9 dB for all channels. Polarization dependent...
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