Quantum communication system and a quantum communication method
US-2016234018-A1 · Aug 11, 2016 · US
Multimode elliptical core optical data transmission
US9813158B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9813158-B2 |
| Application number | US-201615131307-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 18, 2016 |
| Priority date | Jan 22, 2016 |
| Publication date | Nov 7, 2017 |
| Grant date | Nov 7, 2017 |
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Abstract
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Methods and system for transmitting data includes converting multiple optical beams to distinct respective spatial modes. Data is modulated onto each of the optical beams. The optical beams are combined into a single transmission beam. The transmission beam is launched onto a multimode optical fiber having an elliptical core.
First claim
Opening claim text (preview).
What is claimed is: 1. An optical transceiver, comprising: an optical transmitter configured to launch a first transmission beam onto a multimode optical fiber, having an elliptical core, without splitting the first transmission beam into distinct polarizations, said optical transmitter comprising: a mode converter configured to convert each of a plurality of optical beams to distinct respective spatial modes; a modulator configured to modulate date onto each of the plurality of optical beams; and an optical combiner configured to combine the plurality of optical beams into the first transmission beam; and an optical receiver configured to receive a second transmission beam from a multimode optical fiber, having an elliptical core, without detecting distinct polarizations in the second transmission beam, said optical receiver comprising: a mode de-converter configured to split the second transmission beam into a plurality of optical beams, each having a distinct respective spatial mode; a plurality of sensors, each configured to convert a respective optical beam to an electrical signal; and a demodulator configured to demodulate the plurality of electrical signals to extract respective data from each of the plurality of electrical signals. 2. The transceiver of claim 1 , wherein the spatial modes are respective Hermite-Gaussian modes. 3. The transceiver of claim 1 , wherein the mode converter comprises one or more of a diffractive holographic element, a digital micromirror device, a three-dimensional glass waveguide, and a photonic lantern. 4. The transceiver of claim 1 , wherein the transmitter further comprises a single laser and an optical splitter configured to generate the plurality of optical beams. 5. The transceiver of claim 1 , wherein the transmitter further comprises a plurality of lasers each configured to generate a respective one of the plurality of optical beams. 6. The transceiver of claim 1 , wherein the mode de-converter further comprises one or more of a diffractive holographic element, a digital micromirror device, a three-dimensional glass waveguide, and a photonic lantern. 7. The transceiver of claim 1 , wherein each of the plurality of sensors comprises a respective photodetector.
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Classifications
Switch and router aspects · CPC title
using splitting combining · CPC title
Laser transmitters · CPC title
Optical multiplex systems · CPC title
Details of coding or modulation · CPC title
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Frequently asked questions
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- What does patent US9813158B2 cover?
- Methods and system for transmitting data includes converting multiple optical beams to distinct respective spatial modes. Data is modulated onto each of the optical beams. The optical beams are combined into a single transmission beam. The transmission beam is launched onto a multimode optical fiber having an elliptical core.
- Who is the assignee on this patent?
- Nec Lab America Inc, Nec Corp
- What technology area does this patent fall under?
- Primary CPC classification H04B10/2581. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Nov 07 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).