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Monolithic Wavelength-Selective Switches and Cross Connects with Integrated MEMS Mirror Array
| Content Provider | Semantic Scholar |
|---|---|
| Author | Chi, Chao-Hsi Wu, Ming C. |
| Copyright Year | 2006 |
| Abstract | Wavelength-selective switches (WSSs) and wavelength-selective cross connects (WSXCs) enable flexible, intelligent wavelength-division-multiplexed (WDM) networks as well as reduce the operating cost. In a 1xN WSS, the wavelengths from the input port can be independently switched to any of the N output ports. WSXC allows switching of optical signals at wavelength level between N input ports and N output ports. Most of the WSS and WSXC reported to date are realized by free-space optical systems with either micro-electro-mechanical-systems (MEMS) or liquid crystal (LC) beamsteering array, or by silica-based planar lightwave circuits with cascaded 2x2 thermal optical switches. In this paper, we report on the approach to monolithically integrate the WSS and WSXC on a single silicon-on-insulator (SOI) chip. Optical waveguides, microgratings, parabolic reflectors, as well as MEMS active switching micromirrors are fabricated on the same substrate using a one-step etching process. We have successfully fabricated a 1x4 WSS with CWDM (20nm) channel spacing on a 1x2-cm chip, and achieved a fiber-to-fiber insertion loss of 11.7 dB, and a switching time of 0.5 msec. The monolithic 4x4 WSXC is realized by integrating four 4x1 WSSs and four 1x4 multi-mode interference (MMI) splitters on the same wafer. No fiber connections or external splitter are required. The fabricated 4x4 WSXC has a chip area of 3.2x4.6 cm and an insertion loss of 24 dB, including a 6-dB splitting loss. The WSXC supports unicast, multicast, and broadcast functions. The devices can be further scaled to DWDM (100-GHz) channel spacing. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://nanophotonics.eecs.berkeley.edu/Publications/Conference/files/2723/Chi%20and%20Wu%20-%202006%20-%20Monolithic%20wavelength-selective%20switches%20and%20cross.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | A Fibers Channel spacing Clinical act of insertion Demultiplexer (media file) Insertion Mutation Interference (communication) Ion-Selective Electrodes LCD projector LightWave 3D Liquid Crystals Medication Event Monitoring System Medication Systems, Hospital Microelectromechanical systems Multicast Network switch Numerous Optical switch Oral Wafer Parabolic antenna Silicon Dioxide Silicon on insulator Switch Device Component Switching time Tissue fiber Topological insulator Unicast Wavelength-division multiplexing Welander Distal Myopathy hearing impairment wavelength |
| Content Type | Text |
| Resource Type | Article |
