To: Uncle Frank who wrote (7841 ) 10/8/1999 12:25:00 PM From: tekboy Respond to of 54805
A certain skeptical Uncle wrote, "I believe JDSU currently supports oc12; what I'd like to understand is their roadmap to oc48 and oc792. Can you help?" Well, it's good to know things, but almost as good to know others who know things, and as I've said, the Fool's JDSU board is full of a lot of smarties. So the following was the near-immediate response to my cry for help. Uncle, any further queries aremost welcome , and I will fully accept public chastisement (hell, I'll profit as well) if you can come up with a well-grounded objection to investing in JDSU. --tekboy Subject: Re: oc12, oc48, oc792, HIKE! Date: 10/8/99 10:04 AM Author: ndenga tekboy posts: >>I believe JDSU currently supports oc12; what I'd like to understand is their roadmap to oc48 and oc792. Can you help?<< Let me weigh in on the description of the "OC" as its used in networking parlance. "OC" stands for Optical Carrier. It is the fundamental unit used in the Synchronous Optical NETwork ("SONET")hierarchy. One OC is a basic increment of data capacity for network equipment using optic technology. One OC (or 1 OC) is an increment equal to 51.84 Mbps. The OC scale looks like this: Fiber-Optic Signal SONET(SDH)Line OC Level Rate - Mbps OC-1 51.8 OC-3 155.5 OC-12 622.1 OC-48 2,488.3 OC-96 4,976.6 OC-192 9,953.3 [OC-384] [19,906.6] [OC-768] [39,813.2] I will assume that your friend was referring to OC-192 rather than "OC-792". OC-192 is becoming the new de facto standard increment for optical networking systems. To date most systems rely on OC-48 speed equipment. OC-192 corresponds to what is also referred to as the 10 gigabit per second line rate. OC-192 requires fewer channels (wavelengths) to have the same capacity as OC-48 systems. However, there are other technical challenges associated operating at OC-192 (e.g., compensating for signal dispersion and the need for more amplifiers in the system - areas where JDSU excels). While JDSU offers a full complement of products which work for 2.5Gbps systems, the company is at the forefront of producing an equally broad line of products for the 10Gbps architecture. In short JDSU is ready for higher speeds when the downstream customers are ready to kick it up a notch. See, for example: jdsunph.com Your friend asked an appropriate question because 10Gbps is the next step in the development of the broadband infrastructure. It will be interesting to see which downstream companies can roll out equipment to address the world's craving for bandwidth. Thanks, Peter Long: JDSU