TDR and Fiber Optic IFE!

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Ok readers, time to get your technical groove on because this week we deal with an old technology within a new application – Time Domain Reflectrometry (TDR). Firstly, the TDR technology is the science of sending pulses of electrical energy down lines to “see” the condition of the lines themselves by looking at the “reflected” energy pulses that are returned from conditions like line-breaks, shorted wires, and the characteristics of “stuff” that is electrically hung on the end of the lines themselves. In this game, returned pulse shape is everything, and the speed of the return locates the potential discontinuity, or whatever. Thus, the word “time” in TDR. Used in places like aircraft wings where it is challenging to inspect every foot, of every wire in every bundle. Notably, this technology has been around for years and was pioneered by the telephone folks. Now, add the difficulty of finding faults in fiber optic lines where the signal energy is made up of light and you have one tough job. That’s where we came a cross a slick new fiber optic test product from JSC Aeroptics in Britain. They have developed a new product that addresses the problem…specifically on, but not limited to, aircraft. JSC Aeroptics told us:

“Regarding the Luciol LOR-220 it has been demonstrated to a number of aircraft manufacturers, including Airbus and Boeing, and has been shown to audiences at both the ARINC and SAE fibre optic committees plus the US AVionics Fiber Optics & Photonics (AVFOP) and UK Fibre Optics in Harsh Environments conferences (FOHEC). The very nature of its technology makes it an ideal tool for use with short haul fibre optic installations of less than 300 metres in length (a typical commercial aircraft link would be in the region of a maximum of 150 to 200 metres) Regarding the Luciol LOR-220 it has been demonstrated to a number of aircraft manufacturers, including Airbus and Boeing, and has been shown to audiences at both the ARINC and SAE fibre optic committees plus the US AVionics Fiber Optics & Photonics (AVFOP) and UK Fibre Optics in Harsh Environments conferences (FOHEC). The very nature of its technology makes it an ideal tool for use with short haul fibre optic installations of less than 300 metres in length (a typical commercial aircraft link would be in the region of a maximum of 150 to 200 metres).”

After a discourse with Marketing Director John Cotterill and CEO Bruno Huttner, IFExpress decided to let them have a go at describing their latest Optical TDR test product with an interesting smattering of TDR history. Used now by Boeing and Airbus, the LO-220 write-up they provided is an interesting read and we thought you might like to enjoy the fruits of their labor in it’s entirety. Lastly, here is a link to their latest press release.

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