Daisy chainable ONU
First Claim
Patent Images
1. A daisy chainable optical network unit (ONU) comprising:
- ONU logic comprising an ONU transmit output configured to provide end user data for transmission over a passive optical network (PON);
an optical transceiver configured to receive an electrical signal at a PON transmit input and convert the electrical signal into an optical signal for transmission over the PON; and
a multiplexer module comprising;
a transmit multiplexer configured to couple a transmit bus input or the ONU transmit output to an output of the transmit multiplexer; and
a load-balancing demultiplexer configured to couple the output of the transmit multiplexer to the PON transmit input or to a transmit bus output,wherein both the transmit bus input and the transmit bus output are configured to be coupled to a corresponding additional daisy chainable ONU.
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Abstract
Embodiments of a scalable optical network unit (ONU) architecture for multi-dwelling units (MDUs) that has a low initial cost (or first port cost) and a low maintenance cost are provided herein. The ONU architecture is scalable in that a growing number of end users can share a single drop fiber that couples the ONU to a passive optical network. The ONU architecture utilizes a multiplexer module to allow the ONU to be daisy chained with one or more additional ONUs.
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Citations
19 Claims
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1. A daisy chainable optical network unit (ONU) comprising:
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ONU logic comprising an ONU transmit output configured to provide end user data for transmission over a passive optical network (PON); an optical transceiver configured to receive an electrical signal at a PON transmit input and convert the electrical signal into an optical signal for transmission over the PON; and a multiplexer module comprising; a transmit multiplexer configured to couple a transmit bus input or the ONU transmit output to an output of the transmit multiplexer; and a load-balancing demultiplexer configured to couple the output of the transmit multiplexer to the PON transmit input or to a transmit bus output, wherein both the transmit bus input and the transmit bus output are configured to be coupled to a corresponding additional daisy chainable ONU. - View Dependent Claims (2, 3, 4, 5, 12, 13, 14)
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6. A daisy chainable optical network unit (ONU) comprising:
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ONU logic comprising an ONU transmit output configured to provide end user data for transmission over a passive optical network (PON); and a multiplexer module comprising; a transmit multiplexer configured to couple a transmit bus input or the ONU transmit output to an output of the transmit multiplexer; and a load-balancing demultiplexer configured to couple the output of the transmit multiplexer to a PON transmit input of an optical transceiver or to a transmit bus output, wherein both the transmit bus input and the transmit bus output are configured to be coupled to a corresponding additional daisy chainable ONU. - View Dependent Claims (7, 8, 9, 10, 11)
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15. A multiplexer for implementation in a daisy chainable optical network unit (ONU), the multiplexer comprising:
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a transmit multiplexer configured to couple a transmit bus input or an ONU transmit output of the daisy chainable ONU to an output of the transmit multiplexer; and a load-balancing demultiplexer configured to couple the output of the transmit multiplexer to a passive optical network (PON) transmit input of an optical transceiver or to a transmit bus output, wherein both the transmit bus input and the transmit bus output are configured to be coupled to a corresponding additional daisy chainable ONU. - View Dependent Claims (16, 17, 18, 19)
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Specification