Bell State Measurement Apparatus Based on Single-Mode Optical Fiber
US-2019360861-A1 · Nov 28, 2019 · US
Optical coupling system and optical communication device
US2024272362A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024272362-A1 |
| Application number | US-202418633938-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 12, 2024 |
| Priority date | Oct 15, 2021 |
| Publication date | Aug 15, 2024 |
| Grant date | — |
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Abstract
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An object is to provide an optical coupling system having a simplified structure and a small size and an optical communication device using the optical coupling system. The object is achieved by an optical coupling system that couples a multi-core fiber and coupled devices to each other using a combination of a polarized light beam control element facing a light incident and emission surface of a multi-core fiber and a polarization-selective diffraction element that is positioned on a side of the polarized light beam control element opposite to the emission surface of the multi-core fiber and that faces the coupled devices.
First claim
Opening claim text (preview).
What is claimed is: 1 . An optical coupling system comprising: a polarized light beam control element facing a light incident and emission surface of a multi-core fiber; a polarization-selective diffraction element positioned on a side of the polarized light beam control element opposite to the emission surface of the multi-core fiber; and a plurality of coupled devices having light incident and emission surfaces facing the polarization-selective diffraction element. 2 . The optical coupling system according to claim 1 , wherein the polarized light beam control element is a liquid crystal diffraction element including an optically anisotropic layer having a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one direction in plane. 3 . The optical coupling system according to claim 1 , wherein the polarization-selective diffraction element is a liquid crystal diffraction element including an optically anisotropic layer having a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one direction in plane. 4 . An optical communication device comprising: the optical coupling system according to claim 1 . 5 . An optical communication device comprising: the optical coupling system according to claim 3 . 6 . The optical coupling system according to claim 2 , wherein the polarization-selective diffraction element is a liquid crystal diffraction element including an optically anisotropic layer having a liquid crystal alignment pattern in which a direction of an optical axis derived from a liquid crystal compound changes while continuously rotating in at least one direction in plane. 7 . An optical communication device comprising: the optical coupling system according to claim 2 .
Assignees
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Classifications
involving passive liquid crystal elements (optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528) · CPC title
Polarisation splitting or combining · CPC title
Polarising elements (light-modulating devices with active elements G02F1/00) · CPC title
Diffraction gratings {(holographic optical elements G02B5/32, G03H; integrally combined with optical fibres G02B6/02057; for coupling light guides G02B6/34; integrally combined with optical integrated light guides G02B6/12; grating systems G02B27/44)} · CPC title
- G02B6/2713Primary
cascade of polarisation selective or adjusting operations · CPC title
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- What does patent US2024272362A1 cover?
- An object is to provide an optical coupling system having a simplified structure and a small size and an optical communication device using the optical coupling system. The object is achieved by an optical coupling system that couples a multi-core fiber and coupled devices to each other using a combination of a polarized light beam control element facing a light incident and emission surface of…
- Who is the assignee on this patent?
- Fujifilm Corp
- What technology area does this patent fall under?
- Primary CPC classification G02B6/2713. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Aug 15 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).