FsoPublication

Category:Sasecurity
http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JLAPEN000013000006000252000001&idtype=cvips&gifs=yes
This article discusses the application and implications of a new class of optical wireless broadband communications technology utilizing line-of-sight optical links commonly referred to as free space optical communications (FSOC). As the emergence of this technology is likely to spawn an industry with rapid growth in the broadband access telecommunications market, the article will also briefly examine some of the technologies unique operational considerations and focus on the public safety issues associated with large-scale public deployment, and will conclude with a brief review of future directions and recent and very preliminary committee drafts on the operational and safety standards being proposed by members of ANSI Z136.6 and IEC TC76 working group 5-part 12. Comprehensive standards for FSOC applications are not expected before 2003. ©2001 Laser Institute of America.
=== Journal papers ===
High speed integrated transceivers for optical wireless ieee coms magazine 2003
http://www.acreo.se/upload/Publications/Proceedings/OE03/FREESPACE-OE003.pdf
Flip-chip bonding See FREESPACE-OE003.pdf file with presentation from University of Oxford - Dominix O'Brien
A Multichannel multihop local lightwave network - GLOBECOM ' 87; IEEE , p.1459
M. J. McCullagh, D. R. Wisely, P. L. Eardley and P. P. Smyth, “A 50 Mbit/s optical
wireless LAN link using novel optical and electronic enabling technologies,” in
International Zurich Seminar on Digital Communications, Zurich, Switzerland, 1994,
pp. 298-309. 
=== China academic ===
http://d.wanfangdata.com.cn/NSTLHY_NSTL_HY15698572.aspx
=== 50meg link ===
M. J. McCullagh, D. R. Wisely, P. L. Eardley and P. P. Smyth, A 50 Mbit/s optical wireless LAN link using novel optical and electronic enabling technologies, in International Zurich Seminar on Digital Communications, Zurich, Switzerland, 1994,pp. 298-309. - 
Overcomes capacitance of PIN by bootstrapping. The larger the capacitance the more resistant to a change in voltage. PIN diode has dark current which influences
S/N ration and shot current the DC current generated by ambient light outside the IR pulse. 
=== Multipath ===
http://soe.unn.ac.uk/ocr/downloads/partI-rev.pdf
http://66.102.1.104/scholar?num=100&hl=en&lr=&q=cache:G06sLbrrI_sJ:soe.unn.ac.uk/ocr/downloads/partI-rev.pdf++%22Conference+on+optical+wireless+communications%22
J. I. Matsuda, T. Nyu, T. Saito and S. Yamazaki, 125 Mbps IR wireless link for IEEE 1394 multimedia home network, in Proceedings of European Conference on Optical Communication, Madrid, Spain, 20-24 September 1998, pp. 343-344.
P. P. Smyth, M. McCullagh, D. Wisely, D. Wood, S. Ritchie, P. Eardley and S. Cassidy,
Optical wireless local area networks - enabling technologies, BT Technology Journal, vol. 11, no. 2, pp. 56-64, April 1993. 
C. S. Yen and R. D. Crawford, The use of directed optical beams in wireless computer communications, in Proceedings of IEEE Global Communications Conference, New Orleans, U.S.A., 2-5 December 1985, pp. 1181-1184.
T. S. Chu and M. J. Gans, High speed infrared local wireless communication, IEEE Communications Magazine, vol. 25, no. 8, pp. 4-10, August 1987. 
ambient light creates a DC current resulting in shot noise in the receiving IR photodiode. 
=== IRda ===
http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TYP-478YXBY-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=5f088a8aed60f74180737ccde0de671f
Serial Infrared Physical Layer Specification, Version 1.4, Infrared Data Association,30 th May 2001.
http://en.wikipedia.org/wiki/Infrared_Data_Association Follow the linux links for chipsets implementing IRDA phy 
IrDa
=== SPIE ===
Specific IEEE publications on laser optical transmission. 
Conference on optical wireless communications - pat.7110678.pdf - Lightpointe patent
High power optical amplifiers ..... P.F. Sjazowski Enlist these authors as consulting engineers and pay them for the designs. 
=== Society of photo-optical instrumentation engineers ===
I.I. Kim Scintilation reduction using multiple transmitters. - pat.7110678
=== Applied Optics ===
Aperture averaging of optical scintillation effects - j.m. Churnside pat.7710678
=== lightpoint ===
http://www.netdotwork.co.za/news.aspx?pklNewsId=9034&pklCategoryID=197
LightPointe's FSO is a carrier-class technology. LightPointe is an established name in the US for laser connections. The company, an authorised member of Cisco Systems' Ecosystem Partner Program, offers technology that is transparent to any network protocol. In the US, privately run MANs and large-campus corporate networks make use of this system. In the local market, however, this is first and foremost a carrier- or service-provider level solution. It is perfect for metropolitan distribution of broadband data services and avoids the limitations and expense of wireless and fibre broadband systems.
Use IR laser with cutout filter to filter out sunligth
http://spiedl.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PSISDG004441000001000163000001&idtype=cvips&gifs=yes
We found that increasing both the number of transmitters and the effective receiver area greatly improved the signal loss caused by scintillation and thus, the bit error rate.
 * http://optics.org/articles/news/7/12/5/1
 * http://www.lightpointe.com/index.cfm/fuseaction/products.serviceprovider
=== proxim FSO ===
http://www.pricecheck.co.za/products/45006/Proxim+TeraOptic+Free+Space+Optics+link,+125+Mbps,+20-1000+m/
=== links ===
FreeSpaceOptics
Category:Sasecurity