View all newsletters
Receive our newsletter - data, insights and analysis delivered to you
  1. Technology
March 5, 1987


By CBR Staff Writer

Hewlett-Packard Co has designed a colour code similar to that used for resistors to denominate terminations for different types of fibre optic cable: the code identifies the wavelength and core diameter of an instrument or accessory and runs from brown for the first wavelength window from 600nm to 1,200nm, red for the second window from 1,200nm to 1,650nm, orange for the third window, also 1,200nm to 1,650nm; core diameters are coded white for 9 microns, step-index, single-mode; green for 50 microns, graded-index, multimode; blue for 62 microns, graded-index, multimode; gray for 85 microns, graded-index, multimode; and black for greater than 100 microns, step-index, multimode.

Content from our partners
Green for go: Transforming trade in the UK
Manufacturers are switching to personalised customer experience amid fierce competition
How many ends in end-to-end service orchestration?

Websites in our network
Select and enter your corporate email address Tech Monitor's research, insight and analysis examines the frontiers of digital transformation to help tech leaders navigate the future. Our Changelog newsletter delivers our best work to your inbox every week.
  • CIO
  • CTO
  • CISO
  • CSO
  • CFO
  • CDO
  • CEO
  • Architect Founder
  • MD
  • Director
  • Manager
  • Other
Visit our privacy policy for more information about our services, how New Statesman Media Group may use, process and share your personal data, including information on your rights in respect of your personal data and how you can unsubscribe from future marketing communications. Our services are intended for corporate subscribers and you warrant that the email address submitted is your corporate email address.