Abstract
In this paper, we examine the use of limited tunability in reconfigurable optical add-drop multiplexers (L-ROADM). L-ROADMS can add or drop from only a subset of adjacent wavelengths on the network and are less costly than fully-reconfigurable optical add-drop multiplexers (F-ROADMS). We quantify the trade-off between tuning range and the number of F-ROADMs that can be replaced by L-ROADMs without sacrificing the set of connections that can be established. For the limited-add and drop case, an analytical solution for the band size is found. For the limited-add or limited-drop case, a nearly linear relationship was found between the size of the band and the number of L-ROADMs required, and the number of additional wavelengths required never exceeded 20%. For example, if half of the nodes in the ring were equipped with L-ROADMs that operated on 50% of the total spectrum, full connectivity could still be achieved by employing as few as 7% extra wavelengths.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1397-1401 |
| Number of pages | 5 |
| Journal | IEEE International Conference on Communications |
| Volume | 2 |
| State | Published - 2003 |
| Event | 2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States Duration: May 11 2003 → May 15 2003 |
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering