Integration technologies for pluggable backplane optical interconnect systems

Glebov, Alexei L.; Lee, Michael G.; Yokouchi, Kishio

doi:10.1117/1.2432143

Cited by 45 publications

(10 citation statements)

References 23 publications

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“…These are 1) hollow metal waveguides (HMWG) [12] and 2) non-polarizing pellicle beamsplitters (NPPBS). These components will be described here in detail.…”

Section: Novel Low-cost Technologiesmentioning

confidence: 99%

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A High-Speed Optical Multi-Drop Bus for Computer Interconnections

Tan

Rosenberg

Yeo

et al. 2008

2008 16th IEEE Symposium on High Performance Interconnects

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Buses have historically provided a flexible communications structure in computer systems. However, signal integrity constraints of high-speed electronics have made multi-drop electrical busses infeasible. Instead, we propose an optical data bus for computer interconnections. It has two sets of optical waveguides, one as a fan-out and the other as a fan-in, that are used to interconnect different modules attached to the bus. A master module transmits optical signals which are received by all the slave modules attached to the bus. Each slave module in turn sends data back on the bus to the master module. Arrays of lasers, photodetectors, waveguides, microlenses, beamsplitters and Tx/Rx integrated circuits are used to realize the optical data bus. With 1mW of laser power, we are able to interconnect 8 different modules at 10 Gb/s per channel. An aggregate bandwidth of over 25 GB/s is achievable with 10 bit wide signaling paths.

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“…These are 1) hollow metal waveguides (HMWG) [12] and 2) non-polarizing pellicle beamsplitters (NPPBS). These components will be described here in detail.…”

Section: Novel Low-cost Technologiesmentioning

confidence: 99%

“…The theoretical loss of these hollow metal waveguides was estimated by Marcatili [12] for circular metallic waveguides.…”

Section: Novel Low-cost Technologiesmentioning

confidence: 99%

A High-Speed Optical Multi-Drop Bus for Computer Interconnections

Tan

Rosenberg

Yeo

et al. 2008

2008 16th IEEE Symposium on High Performance Interconnects

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“…For example, the guided-wave approach offers excellent interconnect path stability, low cost processing (ie., polymer waveguides) and are suitable for multi-drop interconnect architectures. However, a major obstacle in guided-wave techniques is the need of 90° out of plane optical deflectors to couple light into or out of the interconnecting waveguides (Glebov, et al, 2007). Such micro-mirrors suffer from reflection losses (i.e., 0.5 dB) due to roughness of diced surface and absorption and scattering of the metal film.…”

Section: Array Waveguide Evanescent Coupler Ribbonmentioning

confidence: 99%

Soft Lithographic Fabrication of Micro Optic and Guided Wave Devices

Flores¹,

Wang²

2010

Lithography

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“…A shared bus topology, which has been widely used in conventional electronic backplanes, can effectively multicast signals to all plug-in cards. There has been a lot of research work about optical shared bus topologies for card-to-backplane optical interconnect [2][3][4], but most of them set a fixed power distribution to each link after devices fabrication. So they are not energy efficient since they consume optical signal power even when cards are not plugged into the backplane.…”

Section: Introductionmentioning

confidence: 99%

Soft lithography fabricated polymer waveguides and 45° inclined mirrors for card-to-backplane optical interconnects

2012

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Polymer waveguides with 45° mirrors are fabricated by vacuum assisted microfluidic (VAM) soft lithographic technique for card-to-backplane optical interconnect applications. Waveguide array structures with inclined surfaces in SU-8 photoresist for PDMS mold are fabricated by prism assisted UV exposure. Sample surface reflected UV light is utilized to eliminate undercut structures and to accomplish the inclined mirror surfaces on both ends of the straight waveguide segments by one-step UV exposure. Polymer waveguides with 45° embedded mirrors demonstrated about 0.49 dB/cm propagation loss and 67% mirror coupling efficiency.

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Integration technologies for pluggable backplane optical interconnect systems

Cited by 45 publications

References 23 publications

A High-Speed Optical Multi-Drop Bus for Computer Interconnections

A High-Speed Optical Multi-Drop Bus for Computer Interconnections

Soft Lithographic Fabrication of Micro Optic and Guided Wave Devices

Soft lithography fabricated polymer waveguides and 45° inclined mirrors for card-to-backplane optical interconnects

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