Optical protection switch with broadcast multi-directional capability
First Claim
1. An apparatus, comprising:
- a first reconfigurable optical add/drop multiplexer (ROADM) configured to receive a first optical signal on a first optical channel;
a second ROADM configured to receive a second optical signal on a second optical channel;
a reconfigurable optical switch including;
a first switch, configured to be in optical communication with the first ROADM and switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state;
a second switch, configured to be in optical communication with the second ROADM and switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state; and
an output port, in optical communication with the first switch and the second switch, to transmit an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch; and
a first detector, operatively coupled to the first optical channel, to detect an amplitude of the first optical signal, in response to the amplitude of the first optical signal less than a threshold value, the first switch being turned to the second state to block the first optical signal and the second switch being turned to the first state to transmit the second optical signal to the output port.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus includes a first reconfigurable optical add/drop multiplexer (ROADM) to receive a first optical signal and a second ROADM to receive a second optical signal. The apparatus also includes a reconfigurable optical switch that includes a first switch, switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state. The reconfigurable optical switch also includes a second switch, switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state. The reconfigurable optical switch also includes an output port to transmit an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch.
6 Citations
15 Claims
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1. An apparatus, comprising:
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a first reconfigurable optical add/drop multiplexer (ROADM) configured to receive a first optical signal on a first optical channel; a second ROADM configured to receive a second optical signal on a second optical channel; a reconfigurable optical switch including; a first switch, configured to be in optical communication with the first ROADM and switchable between a first state and a second state, to transmit the first optical signal at the first state and block the first optical signal at the second state; a second switch, configured to be in optical communication with the second ROADM and switchable between the first state and the second state, to transmit the second optical signal at the first state and block the second optical signal at the second state; and an output port, in optical communication with the first switch and the second switch, to transmit an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch; and a first detector, operatively coupled to the first optical channel, to detect an amplitude of the first optical signal, in response to the amplitude of the first optical signal less than a threshold value, the first switch being turned to the second state to block the first optical signal and the second switch being turned to the first state to transmit the second optical signal to the output port. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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receiving a first optical signal from a first reconfigurable optical add/drop multiplexer (ROADM); transmitting the first optical signal to a first switch, in optical communication with the first ROADM and switchable between a first state and a second state, the first switch configured to transmit the first optical signal at the first state and block the first optical signal at the second state; receiving a second optical signal from a second ROADM; transmitting the second optical signal to a second switch, in optical communication with the second ROADM and switchable between the first state and the second state, the second switch configured to transmit the second optical signal at the first state and block and second optical signal at the second state; generating an output signal that is a sum of possible optical signals transmitted through the first switch and the second switch; and detecting an amplitude of the first optical signal; in response to the amplitude of the first optical signal less than a threshold value, configuring the first switch to the second state to block the first optical signal; and configuring the second switch to the first state to transmit the second optical signal and the output signal includes the second optical signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification