Pluggable OLT in Ethernet passive optical networks
First Claim
1. A pluggable optical line terminal (OLT), comprising:
- a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs);
an OLT chip coupled to the bi-directional optical transceiver and configured to communicate with the ONUs through the bi-directional optical transceiver, the OLT chip including;
an Ethernet Passive Optical Network (EPON) scheduler configured to perform downstream traffic flow control of information over an optical interface;
a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and a piece of network equipment; and
an Ethernet serializer/deserializer (SERDES) module that is coupled between the pluggable interface and the OLT chip, configured to facilitate serial communication through the pluggable interface,wherein the bi-directional optical transceiver, the OLT chip, the Ethernet SERDES module, and the pluggable interface are contained in an enclosure complying with a form factor, thereby allowing the pluggable OLT to be directly plugged into the piece of network equipment.
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Accused Products
Abstract
One embodiment provides a pluggable optical line terminal (OLT). The OLT includes a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs), an OLT chip coupled to the optical transceiver and configured to communicate with the ONUs through the optical transceiver, and a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and a piece of network equipment. The optical transceiver, the OLT chip, and the pluggable interface are contained in an enclosure complying with a form factor, thereby allowing the pluggable OLT to be directly plugged into the network equipment.
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Citations
26 Claims
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1. A pluggable optical line terminal (OLT), comprising:
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a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs); an OLT chip coupled to the bi-directional optical transceiver and configured to communicate with the ONUs through the bi-directional optical transceiver, the OLT chip including; an Ethernet Passive Optical Network (EPON) scheduler configured to perform downstream traffic flow control of information over an optical interface; a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and a piece of network equipment; and an Ethernet serializer/deserializer (SERDES) module that is coupled between the pluggable interface and the OLT chip, configured to facilitate serial communication through the pluggable interface, wherein the bi-directional optical transceiver, the OLT chip, the Ethernet SERDES module, and the pluggable interface are contained in an enclosure complying with a form factor, thereby allowing the pluggable OLT to be directly plugged into the piece of network equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 23, 26)
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12. A system, comprising:
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a line card; and a pluggable optical line terminal (OLT) plugged into the line card, the OLT comprising; a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs); an OLT chip coupled to the bi-directional optical transceiver and configured to communicate with the ONUs through the bi-directional optical transceiver, the OLT chip including; an Ethernet Passive Optical Network (EPON) scheduler configured to perform downstream traffic flow control of information over an optical interface; a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and the line card; and an Ethernet serializer/deserializer (SERDES) module that is coupled between the pluggable interface and the OLT chip, configured to facilitate serial communication through the pluggable interface, wherein the bi-directional optical transceiver, the OLT chip, the Ethernet SERDES module, and the pluggable interface are contained in an enclosure complying with a form factor, thereby allowing the pluggable OLT to be directly plugged into the line card. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24)
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25. A pluggable optical line terminal (OLT), comprising:
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a bi-directional optical transceiver configured to transmit optical signals to and receive optical signals from a number of optical network units (ONUs); an OLT chip coupled to the bi-directional optical transceiver and configured to communicate with the ONUs through the bi-directional optical transceiver, the OLT chip including; an Ethernet Passive Optical Network (EPON) scheduler configured to perform downstream traffic flow control of information over an optical interface; an uplink EPON lookup engine configured to determine virtual local area network IDs of received packets; and a downlink EPON lookup engine configured to determine logical-link-identifiers of outgoing packets; a pluggable interface coupled to the OLT chip and configured to electrically interface between the OLT chip and a piece of network equipment; and an Ethernet serializer/deserializer (SERDES) module that is coupled between the pluggable interface and the OLT chip, configured to facilitate serial communication through the pluggable interface, wherein the bi-directional optical transceiver, the OLT chip, the Ethernet SERDES module, and the pluggable interface are contained in an enclosure complying with a small form factor, thereby allowing the pluggable OLT to be directly plugged into the piece of network equipment.
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Specification