System and method to calibrate an optical cross-connect
US6731834B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 8, 2002 |
| Grant date | May 4, 2004 |
| Priority date | — |
| Expiry date | Oct 2, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2011/0083
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A time-division multiplexed optical signal is routed to several input ports of a MEMS-mirror Optical Cross connect (OXC). Advantageously, a single optical signal can be routed through fiber delay coils of varying lengths to introduce precise delay to an optical pulse such that the optical pulse is fed to the input ports of the OXC at various timeslots. After switching the optical pulses through the OXC, the switched optical pulse at different timeslots is combined (multiplexed) and thereafter detected. The amount of optical energy in the (combined) received (output) enables the calibration or training of the OXC. The circuit may be reconfigured to measure the amount of cross talk (signal leakage), insertion loss, and time delay that the OXC introduces in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.