CN210225648U - Light polarization exchange device - Google Patents
Light polarization exchange device Download PDFInfo
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- CN210225648U CN210225648U CN201921114931.9U CN201921114931U CN210225648U CN 210225648 U CN210225648 U CN 210225648U CN 201921114931 U CN201921114931 U CN 201921114931U CN 210225648 U CN210225648 U CN 210225648U
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Abstract
The utility model discloses a light polarization exchange device, including light polarization state switch, polarization beam splitter, electric controller, light signal follows light polarization state switch left side is incident, be provided with electric controller just on the light polarization state switch right side light signal output end is provided with the polarization beam splitter, be provided with input fiber port, first polarization maintaining fiber output port, second polarization maintaining fiber output port on the polarization beam splitter, the utility model discloses can make the information between two way cross polarization multiplex switch each other, can make same input polarization light switch to different ports, just so improve the flexibility of network greatly, reduce the jam of link, improve the utilization ratio of link.
Description
Technical Field
The utility model belongs to the technical field of the light exchange, concretely relates to light polarization exchange device.
Background
Optical switching, or all-optical switching, refers to a device that directly switches input light from one output port to another output port under the control of a control circuit without changing optical signals into electrical signals in an all-optical communication network. Since the modulation of optical signals is divided into various modulation formats such as intensity modulation, phase modulation, and polarization modulation, and the multiplexing system is divided into various systems such as time division multiplexing, code division multiplexing, phase multiplexing, and polarization multiplexing, it is necessary to research a switching device that is compatible with the modulation formats. Currently, the optical switching apparatus used in all-optical switching is mainly oriented to wavelength division multiplexing all-optical networks. Common devices include AWG (arrayed wavelength division multiplexing waveguide) and WSS (wavelength selective Switch), which can only perform a small amount of switching functions on wavelength division multiplexed optical signals, and currently lack effective switching devices for optical signals of other multiplexing modes and other formats.
However, in the present high-speed optical communication, a DP-QPSK (Dual polarization-quadrature Phase Shift Key) format is adopted, that is, an optical signal transmitted in an optical fiber includes two orthogonal polarization states, and each orthogonal polarization state carries an optical signal with 4 phases. The transmission rate of this signal is very high, above 100Gb/s, so the amount of information carried is huge. This means that the information content of a large number of users will only be propagated on the same optical fiber link, which makes the optical communication network very inflexible and is one of the important obstacles preventing the optical communication from proceeding further.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light polarization exchange device to solve present optical communication network dumb, hinder the problem that optical communication continues to advance.
In order to achieve the above object, the utility model provides a following technical scheme: an optical polarization switching device comprising an optical polarization state switcher, a polarization beam splitter, and an electric controller, wherein:
the optical signal is incident from the left input optical fiber port of the optical polarization state switcher;
the light polarization state switcher is provided with an electric controller, and the right side of the light polarization state switcher is provided with a polarization beam splitter;
the polarization beam splitter is provided with a first polarization maintaining optical fiber output port and a second polarization maintaining optical fiber output port;
the light polarization state switcher consists of a polarization maintaining optical fiber and an extrusion mechanism;
the electric controller can provide two voltage values, namely a high voltage value and a low voltage value, and the electric controller transmits the provided voltage values to the squeezing mechanism so as to enable the light polarization state switcher to switch;
the high and low voltage values provided by the electric controller can enable a squeezing mechanism arranged in the light polarization state switcher to be in one of a pressing state or a releasing state;
the extrusion direction of the extrusion mechanism and the polarization main shaft of the polarization maintaining optical fiber form an angle of 45 degrees.
Preferably, the light polarization state switcher is connected with the polarization beam splitter through an optical fiber; the polarization state switcher is electrically connected with the electric controller.
Preferably, the optical signal output polarization direction may coincide with the optical signal input polarization direction.
Preferably, the optical signal output polarization direction may be orthogonal to the optical signal input polarization direction.
Preferably, the polarization direction of the optical signal is input in the x-axis direction of the polarization-maintaining fiber.
Preferably, the polarization beam splitter outputs the optical signal input through the input fiber port in the x polarization state from the first polarization maintaining fiber output port.
Preferably, when the optical signal input by the polarization beam splitter through the input optical fiber port is in the y polarization state, it will be output from the second polarization-maintaining optical fiber output port.
The utility model discloses a technological effect and advantage: the light polarization switching device can enable information between two orthogonal polarization states to be switched mutually, and can enable the same input polarized light to be switched to different ports, so that the flexibility of a network is greatly improved, the blockage of a link is reduced, and the utilization rate of the link is improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a 1-light polarization state switcher, a 2-polarization beam splitter, a 3-electric controller, a 4-polarization maintaining optical fiber, a 5-extrusion mechanism, a 6-input optical fiber port, a 7-first polarization maintaining optical fiber output port and a 8-second polarization maintaining optical fiber output port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a light polarization exchange device as shown in 1 in the figure, including light polarization state switch 1, polarization beam splitter 2, electric controller 3, wherein:
the optical signal is incident from the left input optical fiber port 6 of the optical polarization state switcher 1;
the light polarization state switcher 1 is provided with an electric controller 3, and the right side of the light polarization state switcher 1 is provided with a polarization beam splitter 2;
and a first polarization-maintaining optical fiber output port 7 and a second polarization-maintaining optical fiber output port 8 are arranged on the polarization beam splitter 2.
The light polarization state switcher 1 consists of a polarization maintaining optical fiber 4 and an extrusion mechanism 5;
the electric controller 3 can provide two voltage values, namely a high voltage value and a low voltage value, and the electric controller 3 transmits the provided voltage values to the squeezing mechanism 5 so as to switch the light polarization state switcher 1;
the high and low voltage values provided by the electric controller 3 can make the squeezing mechanism 5 arranged in the light polarization state switcher 1 in one of a pressing state and a releasing state;
the extrusion direction of the extrusion mechanism 5 and the polarization main axis of the polarization maintaining fiber 4 form an angle of 45 degrees.
Specifically, the light polarization state switcher 1 is connected with the polarization beam splitter 2 through an optical fiber; the optical polarization state switcher 1 is electrically connected with the electric controller 3.
Specifically, the optical signal output polarization direction may be the same as the optical signal input polarization direction.
Specifically, the optical signal output polarization direction may be orthogonal to the optical signal input polarization direction.
Specifically, the polarization direction of the optical signal is input in the direction of the x axis of the polarization maintaining fiber 4.
Specifically, when the optical signal input from the input fiber port 6 is in the x-polarization state, the optical polarization beam splitter 2 outputs the optical signal from the first polarization maintaining fiber output port 7.
Specifically, when the optical signal input by the optical polarization beam splitter 2 through the input fiber port 6 is in the y polarization state, it will be output from the second polarization maintaining fiber output port 8.
The working principle is as follows: the light polarization exchange device;
when an input optical signal is input along the X polarization direction of the polarization maintaining optical fiber 4 and the low voltage provided by the electric controller 3 makes the squeezing mechanism 5 arranged inside the optical polarization state switcher 1 in a relaxed state, the optical signal in the polarization maintaining optical fiber 4 does not change the original polarization state and continues to be output in the X polarization direction; if the electric controller 3 provides a high voltage, which will make the squeezing mechanism 5 disposed inside the optical polarization state switcher 1 in a tight state, the optical signal in the polarization maintaining fiber 4 will change its polarization direction to output in the Y polarization direction along the polarization maintaining fiber 4; the right side optical signal output end of the optical polarization state switcher 1 is provided with a polarization beam splitter 2, in the polarization beam splitter 2, when an optical signal is input into an optical fiber port 6 along the polarization state of a polarization-maintaining optical fiber 4X, the optical signal is output from a first polarization-maintaining optical fiber output port 7, and when the optical signal is input into the optical fiber port 6 along the polarization state of the polarization-maintaining optical fiber 4Y, the optical signal is output from a second polarization-maintaining optical fiber output port 8, so that the purpose of switching the same input polarization light to different ports is achieved, the flexibility of a network is greatly improved, the blockage of a link is reduced, and the utilization rate of the link is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (7)
1. A light polarization switching device comprises a light polarization state switcher (1), a polarization beam splitter (2) and an electric controller (3), and is characterized in that:
the optical signal can be incident from the left input optical fiber port (6) of the optical polarization state switcher (1);
the light polarization state switcher (1) is provided with an electric controller (3), and the right side of the light polarization state switcher (1) is provided with a polarization beam splitter (2);
a first polarization maintaining optical fiber output port (7) and a second polarization maintaining optical fiber output port (8) are arranged on the polarization beam splitter (2);
the light polarization state switcher (1) consists of a polarization maintaining optical fiber (4) and an extrusion mechanism (5);
the electric controller (3) can provide two voltage values, namely a high voltage value and a low voltage value, and the electric controller (3) transmits the provided voltage values to the squeezing mechanism (5) so as to enable the light polarization state switcher (1) to switch;
the high and low voltage values provided by the electric controller (3) can enable a squeezing mechanism (5) arranged in the light polarization state switcher (1) to be in one of a pressing state or a releasing state;
the extrusion direction of the extrusion mechanism (5) and the polarization main shaft of the polarization maintaining optical fiber (4) form an angle of 45 degrees.
2. A light polarization switching device according to claim 1, wherein: the light polarization state switcher (1) is connected with the polarization beam splitter (2) through an optical fiber; the light polarization state switcher (1) is electrically connected with the electric controller (3).
3. A light polarization switching device according to claim 1, wherein: the optical signal output polarization direction may coincide with the optical signal input polarization direction.
4. A light polarization switching device according to claim 1, wherein: the optical signal output polarization direction may be orthogonal to the optical signal input polarization direction.
5. A light polarization switching device according to claim 1, wherein: the polarization direction of the optical signal is input in the x-axis direction of the polarization-maintaining optical fiber (4).
6. A light polarization switching device according to claim 1, wherein: when the optical signal input by the optical polarization beam splitter (2) through the input optical fiber port (6) is in an x polarization state, the optical signal is output from the first polarization maintaining optical fiber output port (7).
7. A light polarization switching device according to claim 1, wherein: when the optical signal input by the optical polarization beam splitter (2) through the input optical fiber port (6) is in a y polarization state, the optical signal is output from the second polarization-maintaining optical fiber output port (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921114931.9U CN210225648U (en) | 2019-07-16 | 2019-07-16 | Light polarization exchange device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921114931.9U CN210225648U (en) | 2019-07-16 | 2019-07-16 | Light polarization exchange device |
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| Publication Number | Publication Date |
|---|---|
| CN210225648U true CN210225648U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921114931.9U Active CN210225648U (en) | 2019-07-16 | 2019-07-16 | Light polarization exchange device |
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| CN (1) | CN210225648U (en) |
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2019
- 2019-07-16 CN CN201921114931.9U patent/CN210225648U/en active Active
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