Symmetric optical multiplexing node
First Claim
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1. An optical add/drop multiplexer (OADM) node, comprising:
- a first interface to a first number of fiber pairs connecting the OADM node to a first trunk station;
a second interface to a second number of fiber pairs connecting the OADM node to a second trunk station;
a third interface to a third number of fiber pairs connecting the first trunk station and the second trunk station with a branch station, wherein the third number of fiber pairs is equal to each of the second number of fiber pairs and the first number of fiber pairs; and
a plurality of filters configured to provide connectivity between the first trunk station, the second trunk station and the branch station;
wherein the first trunk station supports a first group of optical bands, the second trunk station supports a second group of optical bands, and the branch station supports the second group of optical bands; and
wherein the first trunk station is a legacy station with a lower bandwidth capability than the second trunk station or the branch station.
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Abstract
Techniques for communications using optical fiber are disclosed. An optical add/drop multiplexer (OADM) node includes an interface to a first fiber pair connecting a first trunk station and a second trunk station. The OADM node further includes an interface to a second fiber pair connecting the first trunk station and the second trunk station with a branch station. The OADM node includes a plurality of filters configured to provide connectivity between the first trunk station, the second trunk station and the branch station. Other embodiments are described and claimed.
36 Citations
18 Claims
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1. An optical add/drop multiplexer (OADM) node, comprising:
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a first interface to a first number of fiber pairs connecting the OADM node to a first trunk station; a second interface to a second number of fiber pairs connecting the OADM node to a second trunk station; a third interface to a third number of fiber pairs connecting the first trunk station and the second trunk station with a branch station, wherein the third number of fiber pairs is equal to each of the second number of fiber pairs and the first number of fiber pairs; and a plurality of filters configured to provide connectivity between the first trunk station, the second trunk station and the branch station; wherein the first trunk station supports a first group of optical bands, the second trunk station supports a second group of optical bands, and the branch station supports the second group of optical bands; and wherein the first trunk station is a legacy station with a lower bandwidth capability than the second trunk station or the branch station. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A system, comprising:
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a first trunk station; a second trunk station; a branch station; a first fiber pair; a second fiber pair; and an optical add/drop multiplexer (OADM) node, the OADM node comprising; a first interface to a first number of fiber pairs connecting the OADM node to a first trunk station; a second interface to a second number of fiber pairs connecting the OADM node to a second trunk station; a third interface to a third number of fiber pairs connecting the first trunk station and the second trunk station with a branch station, wherein the third number of fiber pairs is equal to each of the second number of fiber pairs and the first number of fiber pairs; and a plurality of filters configured to provide connectivity between the first trunk station, the second trunk station and the branch station; wherein the first trunk station supports a first group of optical bands, the second trunk station supports a second group of optical bands, and the branch station supports the second group of optical bands; and wherein the first trunk station is a legacy station with a lower bandwidth capability than the second trunk station or the branch station. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A method for providing optical communications, comprising:
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receiving a first communication at an optical add/drop multiplexer (OADM) node from a first trunk station over a first fiber pair; receiving a second communication at the OADM node from a second trunk station over the first fiber pair; and routing the first communication and the second communication to a branch station over a second fiber pair; wherein a first number of fiber pairs extending between the first trunk station and the OADM node is equal to each of a second number of fiber pairs extending between the OADM node and the second trunk station and a third number of fiber pairs extending between the OADM node and the branch station; wherein the first trunk station supports a first group of optical bands, the second trunk station supports a second group of optical bands, and the branch station supports the second group of optical bands; and wherein the first trunk station is a legacy station with a lower bandwidth capability than the second trunk station or the branch station. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification