| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 398006000 | In a repeater system | 6 |
| 20090116834 | OPTICAL TRANSMISSION APPARATUS AND RESTART CONTROL METHOD - An apparatus comprises an optical level controller for autonomously controlling an optical device such that an optical level of the supplied optical signal becomes an objective level, and a controlled variable storer for storing a controlled variable in storage if a restart is required, the optical level controller providing the controlled variable to control the optical signal, wherein the optical level controller starts the control of optical device after the restart while the controlled variable stored in the storage by the controlled variable storer is set at an initial value. | 05-07-2009 |
| 20090202237 | System and Method for Fault Identification in Optical Communication Systems - A system and method for fault identification in optical communication networks. One or more repeaters in the system includes a loop back path that couples an output a first amplifier for amplifying signals carried in a first direction through a repeater to an input of a second amplifier for amplifying signals carried in a second direction through said repeater. Fault analysis is conducted using loop gain data associated with test signals transmitted on the first or second paths and returned on the opposite path through the loop back paths. | 08-13-2009 |
| 20100310252 | OPTICAL COMMUNICATION - This concerns a protected long-reach PON having a plurality of terminals connected to a distribution network that is fed by both a main and back up feed, each feed including a head end and a repeater. The back up head end had access to a ranging table with data previously obtained by the main head end, thereby speeding up the switch over in the event of a fault with the main feed. In one embodiment, the repeater has a virtual ONU therein, allowing the back up repeater to be ranged by the back up head end, thereby yet further speeding up the ranging procedure. The main and back up repeaters are sufficiently equidistant from the distribution network to allow the back up head to perform normal scheduling without performing a ranging operation on each of the terminals, even if the different terminals transmit at slightly different wavelengths. This is achieved using the ranging information obtained with regard to the back up repeater. | 12-09-2010 |
| 20110164873 | OPTICAL REPEATER, OPTICAL TRANSMISSION APPARATUS, REFLECTION ABNORMALITY DETECTION METHOD AND REFLECTION ABNORMALITY RECOVERY DETERMINATION METHOD - An output light intensity monitor unit of an optical repeater monitors an output light of an output point of the optical repeater. A reflected light intensity monitor unit monitors a reflected light returning from an optical fiber to the output point, An optical fiber transmission line loss from the apparatus output point to an optical fiber open end and a light intensity emitted from the open end are estimated from a monitored reflected light intensity, and a reflection abnormality detection threshold for detecting the reflection abnormality if the light intensity emitted from the open end exceeds a reference light intensity is prescribed. An output light intensity lowering amount and a reflection abnormality recovery threshold are prescribed from an output light intensity monitored at the apparatus output point and the reflected light intensity so that an open end output light intensity may be lowered to the reference light intensity. | 07-07-2011 |
| 20130064538 | DATA RELAY APPARATUS AND FUNCTION CONTROL METHOD THEREFOR - A data relay apparatus R (e.g., one included in an ONU) that performs data transfer from one port to another port reduces power consumption by performing control to limit a receive function of a receiving unit | 03-14-2013 |
| 20160006501 | SELF-DEPLOYING AND SELF-HEALING SUBSEA DATA NETWORK AND METHOD OF USE - A self-deploying and self-healing subsea network comprises one or more homing vehicles, one or more data repeaters, and one or more independent guidable homing systems configured to assist the homing vehicles in localization of and docking with the data repeaters. A plurality of data repeaters are deployed in a body of water and, at a predetermined time, a homing vehicle released from a first data repeater and instructed to transit to and dock with a predetermined second data repeater. After docking, a network cable is operatively placed into communication between the first data repeater and the second data repeater. | 01-07-2016 |
