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Proceedings Paper

The Fibre Optic Solution To 1553B-1773 Databus
Author(s): J Hankey; K L Monham; J W Burgess; A C Carter
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Paper Abstract

The 1553B databus (and its DEF STD 0018 equivalent) are a high performance command-response communication link which is electrically implemented via transformer coupling using a three level manchester enclosed signal. An optical transmitter/receiver replacement has been designed which well exceeds present data bus specifications and is totally compatible with interface chip sets currently being developed (Smiths, MEDL, Harris). The transmitters can launch 3 mW into 200 micron covered fibre at a wavelength of 0.88 microns over the range 0 to 25Mbit/s. The receivers operate at power levels of 300 nanowatts to 600 microwatts with a maximum bit period deviation of less than 100 ns (1553B for 150 ns). Interword gaps from zero to greater than 1 second can be tolerated with an interword gap upper limit most probably in excess of 10 seconds (measurements have been limited to 5 seconds max). This has been achieved via signal processing rather than any complex encoding techniques. The units are based on high reliability construction techniques, using a hybrid assembly process, to give a fully hermetic package (20 PIN DIL transmitter 32 PIN DIL receiver, with a common 0.6" row spacing) with an operating temperature range of -55 to +125°C.

Paper Details

Date Published: 15 August 1984
PDF: 2 pages
Proc. SPIE 0468, Fibre Optics '84, (15 August 1984); doi: 10.1117/12.941650
Show Author Affiliations
J Hankey, Plessey Research (United Kingdom)
K L Monham, Plessey Research (United Kingdom)
J W Burgess, Plessey Research (United Kingdom)
A C Carter, Plessey Research (United Kingdom)


Published in SPIE Proceedings Vol. 0468:
Fibre Optics '84

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