Patent ID: 9008510
Filing Date: 2015-04-14
Classification: H04L,H04Q

Abstract:
1. An optical circuit switching device, comprising: a first stage including a first plurality of 2n by 2n optical circuit switching modules; a second stage including a second plurality of 2n by 2n optical circuit switching modules, the second plurality of optical circuit switching modules being fewer than the first plurality of optical circuit switching modules; a first plurality of optical fibers interconnecting ports of the first and second pluralities of optical circuit switching modules in a two-stage folded CLOS topology, wherein the plurality of optical fibers is fusion spliced to the ports for propagating optical signals between the first and second stages; a front plate coupled to the first stage via a second plurality of optical fibers, the front plate being configured to interface with one or more external devices; wherein each optical circuit switching module of the first stage includes a power monitoring mechanism configured to perform end-to-end power monitoring across at least one optical circuit switching module of the first stage and at least one optical circuit switching module of the second stage; and wherein none of the optical circuit switching modules of the second stage includes a power monitoring mechanism.