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US 10,256,914 B2Granted
Single source optical transmission
AssigneeFacebook, Inc.
InventorsJason Taylor, Narsing Vijayrao
Life of this patent
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Abstract
Systems and methods for optical communication using single source optical transmission are disclosed. A representative method includes receiving optical signals at a first frequency by a receiver (RX) from an optical fiber. The received optical signals are routed to a modulator that modulates the optical signals at a second frequency. The optical signals are emitted by a transmitter (TX) back to the optical fiber at the second frequency.
Claims23
A method for optical communication, comprising:
- receiving optical signals that include a first signal component at a first frequency of a carrier light by a receiver (RX) via an optical fiber, wherein the received optical signals also include a second signal component at a second frequency and a third signal component at a third frequency;
- routing at least a portion of the optical signals to a modulator;
- modulating the second signal component of the received optical signals at the second frequency;
- emitting the modulated second signal component of the optical signals by a transmitter (TX) via the optical fiber at the second frequency, wherein the emitted modulated second signal component of the optical signals is at the same second frequency as the second frequency of the second signal component originally included in the received optical signals;
- receiving at a second receiver at least the third signal component of the optical signals at the third frequency;
- routing at least a portion of the third signal component of the optical signals to a second modulator;
- and
- modulating by the second modulator at least the portion of the third signal component at the third frequency.
5 more elements
A method for optical communication, comprising:
- receiving optical signals by a first receiver (RX) from an optical fiber, wherein the optical signals are carried at least in part by a light having a first property, a second property and a third property, wherein each of the first, second and third properties is one or more of a frequency, a wavelength, a polarization angle, a phase, or a portion of time domain, or a combination thereof;
- routing at least a portion of the optical signals to a first modulator;
- modulating by the first modulator at least a portion of the optical signals using the second property of the light carrying the optical signals;
- and
- transmitting at least the modulated portion of the optical signals by a first transmitter (TX) the second property;
- and
- receiving the optical signals by a second RX via the optical fiber, wherein at least a portion of the optical signals have the second property;
- routing at least a portion of the optical signals to a second modulator;
- modulating by the second modulator at least a portion of the optical signals using the third property of the light carrying the optical signals;
- and
- transmitting at least the modulated portion of the optical signals by a second TX using the third property.
8 more elements
A transceiver, comprising:
- a receiver (RX) configured to receive optical signals that include a first signal component at a first frequency of a carrier light via an optical fiber, wherein the received optical signals also include a second signal component at a second frequency and a third signal component at a third frequency;
- a mirror configured to reflect the second signal component of the optical signals toward a modulator;
- the modulator configured to modulate the second signal component of the received optical signals at the second frequency;
- a transmitter (TX) configured to emit the modulated second signal component of the optical signals via the optical fiber at the second frequency, wherein the emitted modulated second signal component of the optical signals is at the same second frequency as the second frequency of the second signal component originally included in the received optical signals;
- receiving at a second receiver at least the third signal component of the optical signals at the third frequency;
- routing at least a portion of the third signal component of the optical signals to a second modulator;
- and
- modulating by the second modulator at least the portion of the third signal component at the third frequency.
5 more elements
A system for optical communication, comprising:
- a first transceiver having:
- a first receiver (RX) for receiving optical signals carried by a light at a first frequency;
- a first light router to route the optical signals at the first frequency toward a first modulator;
- the first modulator for modulating the optical signals using the light at a second frequency, wherein the second frequency is different from the first frequency;
- and
- a first transmitter (TX) for transmitting the optical signals at the second frequency;
- a second transceiver having:
- a second RX for receiving the optical signals at the second frequency;
- a second light router to route the optical signals at the second frequency toward a second modulator;
- the second modulator for modulating the optical signals using the light at a third frequency, wherein the third frequency is different from the second frequency;
- and
- a second TX for transmitting the optical signals at the third frequency;
- and
- an optical fiber for optically connecting the first transceiver with the second transceiver.
11 more elements
Dependencies are inferred from the claim text.