Free space optical interconnect at 1.25 Gb/s/channel using adaptive alignment

Goodwill, Dominic; Kabal, D.; Palacharla, Paparao

doi:10.1109/ofc.1999.766402

Cited by 12 publications

(5 citation statements)

References 9 publications

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“…For outdoors, fixed FSO communication techniques to remedy small vibrations [4,5], swaying of the buildings have been implemented using mechanical auto-tracking [2,6,17] or beam steering [29], and interference [16] and noise [26]. Similarly, for optical interconnects, auto-alignment or wavelength diversity techniques are reported to improve the misalignment tolerances in 2-dimensional arrays [9,10,12,14,19]. These techniques work only over small ranges (e.g.…”

Section: Introductionmentioning

confidence: 99%

Free-space-optical mobile ad hoc networks: Auto-configurable building blocks

et al. 2007

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Existence of line of sight (LOS) and alignment between the communicating antennas is one of the key requirements for free-space-optical (FSO) communication. To ensure uninterrupted data flow, auto-aligning transmitter and receiver modules are necessary. We propose a new FSO node design that uses spherical surfaces covered with transmitter and receiver modules for maintaining optical links even when nodes are in relative motion. The spherical FSO node provides angular diversity in 3-dimensions, and hence provides an LOS at any orientation as long as there are no obstacles in between the communicating nodes. For proof-of-concept, we designed and tested an auto-configurable circuit, integrated with light sources and detectors placed on spherical surfaces. We demonstrated communication between a stationary and a mobile node using these initial prototypes of such FSO structures. We also performed the necessary theoretical analysis to demonstrate scalability of our FSO node designs to longer distances as well as feasibility of denser packaging of transceivers on such nodes.

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Section: Introductionmentioning

confidence: 99%

Free-space-optical mobile ad hoc networks: Auto-configurable building blocks

et al. 2007

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“…Several publications propose spatial redundancy to release the positioning constraint. For instance, several papers propose to increase the number of possible optical links and to use the most reliable one to implement the link 1,2,5,7 . In this publication, we rather consider optical power increase to maximize the positioning tolerance within the optical interconnect.…”

Section: Project Purposesmentioning

confidence: 99%

“…Free space optics then requires large optics to properly route the optical beam on distances that can be as high as a few kilometers. In the future, free space optical interconnects will also be used within processing units or calculators for high speed massively parallel data distribution on processing boards 1-3 , optical switching and chip to chip interconnects 4,5 . In those later cases, free space optical data links will be based on micro-optical elements and matrixes of optoelectronic components 3,6 .…”

Section: Introductionmentioning

confidence: 99%

Point to point VCSEL-based free space optical data link for board-to-board communications

Foucal¹,

Quentel²,

Pez³

et al. 2006

SPIE Proceedings

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“…Gb/s data transmission through a polymeric-waveguideembedded board was reported. 10,11 However, optical backplane systems using waveguide-embedded optical PCBs were not reported yet. For the realization of the optical backplane systems using the waveguide-embedded optical PCBs, several difficulties should be overcome, especially, in high-speed packaging of processing boards, in the preparation of the interconnection parts to insert processing boards into the optical backplane board and in fabrication of the appropriate waveguide-embedded optical PCBs.…”

Section: Introductionmentioning

confidence: 99%

Board-to-board optical interconnection using novel optical plug and slot

Cho

Yoon

et al. 2004

Novel Optical Systems Design and Optimization VII

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ABSRACTA novel optical PCB with transmitter/receiver system boards and optical bakcplane was prepared, which is board-toboard interconnection by optical plug and slot. We report an 8Gb/s PRBS NRZ data transmission between transmitter system board and optical backplane embedded multimode polymeric waveguide arrays. The basic concept of ETRI's optical PCB is as follows; 1) Metal optical bench is integrated with optoelectronic devices, driver and receiver circuits, polymeric waveguide and access line PCB module. 2) Multimode polymeric waveguide inside an optical backplane, which is embedded into PCB. 3) Optical slot and plug for high-density(channel pitch : 500um) board-to-board interconnection. The polymeric waveguide technology can be used for transmission of data on transmitter/ receiver system boards and for backplane interconnections. The main components are low-loss tapered polymeric waveguides and a novel optical plug and slot for board-to-board interconnections, respectively. The optical PCB is characteristic of low coupling loss, easy insertion/extraction of the boards and, especially, reliable optical coupling unaffected from external environment after board insertion.

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Free space optical interconnect at 1.25 Gb/s/channel using adaptive alignment

Cited by 12 publications

References 9 publications

Free-space-optical mobile ad hoc networks: Auto-configurable building blocks

Free-space-optical mobile ad hoc networks: Auto-configurable building blocks

Point to point VCSEL-based free space optical data link for board-to-board communications

Board-to-board optical interconnection using novel optical plug and slot

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