This paper outlines Raynet's fiber-to-the-subscriber system and its evolution to a fiber-to-the-home system. The Raynet system uses resource sharing to provide a full mix of concurrent POTS, Basic ISDN, AM Video and Broadband ISDN services. A fiber-to-the-subscriber system must be cost competitive with today's copper systems. The requirement to support AM video and digital broadband services must have a very low impact on the system's installed cost. The upgrade must be non-service effecting and must gracefully support a full mix of services on a nonblocking basis.
Carl P. Engineer,
"Fiber in the loop: an evolution in services and systems", Proc. SPIE 1363, Fiber Optics in the Subscriber Loop, (1 January 1991); doi: 10.1117/12.24580; https://doi.org/10.1117/12.24580