Optronic transceiver module with integrated protection
AssigneeOrange
InventorPhilippe Chanclou
Life of this patent
Estimating the term…
Abstract
An optronic transceiver module capable of implementing an optical bidirectional communication of the point to point type via at least one main optical fibre is disclosed. The optronic transceiver module includes a first optical module for supervising an uplink signal received via the main optical fibre delivering a first supervision result, a first optical module for switching the bidirectional communication via the main optical fibre to a bidirectional communication via a backup optical fibre, and vice versa, the first optical switching module being controlled by the first optical supervision module depending on the first supervision result delivered.
Claims13
An optronic transceiver module capable of implementing an optical bidirectional communication of the point to point type via at least one main optical fibre the optronic transceiver module comprising:
- a first optical module for supervising an uplink signal received via the main optical fibre delivering a first supervision result;
- a first optical module for switching the bidirectional communication via the main optical fibre to a bidirectional communication via a backup optical fibre, and vice versa, the first optical switching module being controlled by the first optical supervision module depending on the first supervision result delivered;
- also comprising a second optical module for supervising an uplink signal received via the backup optical fibre delivering a second supervision result and controlling the first optical switching module;
- and
- wherein the first, respectively the second, optical supervision module comprises:
- a first, respectively second, sampling uplink optical coupler capable of splitting at least one uplink optical signal received via the main optical fibre, respectively the backup optical fibre, into two optical signal split according to a predetermined power ratio for the split optical signals, the first, respectively second, sampling uplink optical coupler delivering a first, respectively second, low-power signal and a first, respectively second, high-power signal;
- and
- at least one first, respectively second, power measurement photodiode delivering a first, respectively second, power measurement associated with a first, respectively second, low-power signal.
A method of protecting a bidirectional communication of the point to point type via at least one main optical fibre between an optical line terminal, by means of at least one first optronic transceiver module, and an item of client equipment, by means of at least one second optronic transceiver module, in an optical communication network, the method comprising, implemented in the at least one first optronic transceiver module:
- first supervising of the bidirectional communication via the main optical fibre by comparing the optical power received with an optical power reference value delivering a negative comparison result if the optical power received is below the optical power reference value;
- and
- switching of the bidirectional communication to a bidirectional communication via a backup optical fibre between the first optronic transceiver module and the second optronic transceiver module if the comparison result is negative,
- wherein the first supervision comprises before comparing the optical power, splitting an at least one uplink optical signal received via the main optical fibre, respectively the backup optical fibre, into a first, respectively second, low-power signal and a first, respectively second, high-power signal, and wherein the first, respectively second, low-power signal is used for comparing the optical power received with an optical power reference value, the first, respectively second, high-power signal being used for communication between the optical line terminal and the item of client equipment.
Dependencies are inferred from the claim text.