Small multichannel high-speed switching optical switch

Abstract

The utility model relates to a miniature multichannel high-speed switching optical switch, an optical path structure of the optical switch comprises a single-core optical fiber array, an optical branching device, a multichannel light-emitting chip and a multi-core optical fiber array which are connected in sequence, and the branching number of the optical branching device, the channel number of the multichannel light-emitting chip and the core number of the multi-core optical fiber array are the same. And the multi-channel light-emitting chip is used for realizing switching among channels. The switching function of the optical switch is realized by power-on and power-off of the multi-channel light-emitting chip, compared with the switching mode of an electric control optical switch, the switching mode is more convenient and faster, the switching time can reach the ns magnitude, the structure is simple, and the price is low.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication, and specifically discloses a small multi-channel high-speed switching optical switch. Background Art

[0002] For existing multi-channel optical switches, whether they are electrically controlled or optically controlled optical switch solutions, they all require multi-stage cascading of optical switch units. The control circuit of the electrically controlled one is complex, the response speed is slow, generally in the order of ms, and the price is high. The switching speed of the optically controlled optical switch can reach the ns level, but the structure is more complex, the processing technology requirements are high, and the price is expensive. The channel switching speed of this application can reach the ns level, and the structure is simple and the price is low. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a small multi-channel high-speed switching optical switch. The switching function of the optical switch is realized by powering on and off the multi-channel light-emitting chip, which is more convenient and faster than the switching method of the electrically controlled optical switch. The switching time can reach the ns order of magnitude, and the structure is simple and the price is low.

[0004] To achieve the above purpose, the technical solution of the utility model is: a small multi-channel high-speed switching optical switch, the optical path structure of the optical switch includes a single-core fiber array, an optical splitter device, a multi-channel light-emitting chip and a multi-core fiber array connected in sequence. The number of splitting paths of the optical splitter device, the number of channels of the multi-channel light-emitting chip and the number of cores of the multi-core fiber array are the same. The multi-channel light-emitting chip is used to realize the switching between channels.

[0005] Preferably, the multi-channel light-emitting chip is a multi-channel semiconductor optical amplifier chip; among them, the semiconductor optical amplifier chip of each channel amplifies the light transmitted through the channel when powered on to realize the channel opening function, and absorbs the light transmitted through the channel when powered off to realize the channel closing function.

[0006] Preferably, the optical splitter device is a planar lightwave circuit (PLC) optical splitter.

[0007] Preferably, the optical splitter device is a fused biconical taper (FBT) optical splitter.

[0008] Preferably, the optical splitter device is a 1×4 planar optical waveguide, the multi-channel light-emitting chip is a four-channel light-emitting chip, and the multi-core fiber array is a four-core fiber array.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] 1. The switching function of the optical switch of the utility model is realized by powering on and off the multi-channel light-emitting chip, which is more convenient and faster than the switching method of the electrically controlled optical switch; the switching time can reach the ns order of magnitude.

[0011] 2. Compared with the existing structural solutions of electrically controlled optical switches and optically controlled optical switches, the structure of the present utility model is simpler, with lower process requirements and lower costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic structural diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The technical solution of the present utility model will be specifically described below with reference to the accompanying drawings.

[0014] A small multi-channel high-speed switching optical switch of the present utility model, the optical path structure of the optical switch includes a single-core fiber array, an optical splitter device, a multi-channel light-emitting chip, and a multi-core fiber array connected in sequence. The number of splitting channels of the optical splitter device, the number of channels of the multi-channel light-emitting chip, and the number of cores of the multi-core fiber array are the same. The multi-channel light-emitting chip is used to realize the switching between channels.

[0015] The multi-channel light-emitting chip is a multi-channel semiconductor optical amplifier chip; wherein, the semiconductor optical amplifier chip of each channel amplifies the light transmitted through the channel when powered on to realize the channel opening function, and absorbs the light transmitted through the channel when powered off to realize the channel closing function.

[0016] The optical splitter device is a planar lightwave circuit (PLC) optical splitter.

[0017] The optical splitter device is a fused biconical taper (FBT) optical splitter.

[0018] The optical splitter device is a 1×4 planar lightwave waveguide, the multi-channel light-emitting chip is a four-channel light-emitting chip, and the multi-core fiber array is a four-core fiber array.

[0019] Taking a four-channel optical switch as an example below, it can be analogized to optical switches with more channels or fewer channels.

[0020] As Figure 1 shown, a small four-channel high-speed switching optical switch, its optical path structure includes: a four-core fiber array 1 (Fiber Array, FA), a four-channel light-emitting chip 2, a 1×4 planar lightwave circuit (Planar Lightwave Circuit, PLC) 3, and a single-core fiber array 4.

[0021] The optical signal is input into the single-core fiber array 4 through an optical fiber, and after passing through the 1×4 planar optical waveguide (PLC) 3, it is divided into four paths, then passes through the four-channel light-emitting chip 2, reaches the four-core fiber array 1, and is respectively transmitted into four channels. When the light-emitting chip is not powered, it will absorb the transmitted light, realizing the 'off' function. When the light-emitting chip is powered and reaches a certain intensity, it will amplify the transmitted light, realizing the 'on' function. Therefore, by powering on and off the chips of the four channels, the selection of channels can be realized. Since only the power-on and power-off of different channels are required to achieve the switching between channels, the response speed is extremely short and can reach the ns level.

[0022] The optical switch of this embodiment also allows four different optical signals to enter the four-channel light-emitting chip 2 from the four-core fiber array 1, and then pass through the 1×4 planar optical waveguide (PLC) 3, and finally output from the single fiber of the single-core fiber array 4. By turning on and off the four-channel light-emitting chip, any selection and random switching of the four different optical signals can be realized.

[0023] The optical splitter device used in this embodiment is a PLC. If other optical splitter devices are used, such as an optical splitter made by fused biconical taper, it should also be regarded as within the protection scope.

[0024] The overall structure of the present utility model is that a multi-core fiber array is connected to a multi-channel light-emitting chip, then connected to an optical splitter device and then connected to a single-core fiber array; the optical switch switching function is realized by turning on and off the channels. When the light-emitting chip of the specified channel is powered, the channel is turned on; when the specified channel is powered off, the channel is turned off, thereby realizing the switching between channels and the switching time can reach the ns magnitude.

[0025] The above is the preferred embodiment of the present utility model. All changes made according to the technical solution of the present utility model, when the functions and effects generated do not exceed the scope of the technical solution of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A small multi-channel high-speed switching optical switch, characterized in that The optical path structure of the optical switch includes a single-core fiber array, an optical splitter device, a multi-channel light-emitting chip, and a multi-core fiber array connected in sequence. The number of splitting channels of the optical splitter device, the number of channels of the multi-channel light-emitting chip, and the number of cores of the multi-core fiber array are the same. The multi-channel light-emitting chip is used to achieve switching between channels.

2. The miniaturized multi-channel high-speed switching optical switch according to claim 1, wherein The multi-channel light-emitting chip is a multi-channel semiconductor optical amplifier chip. Among them, the semiconductor optical amplifier chip of each channel amplifies the light transmitted through the channel when powered on to achieve the channel opening function, and absorbs the light transmitted through the channel when powered off to achieve the channel closing function.

3. The miniaturized multi-channel high-speed switching optical switch according to claim 1, wherein The optical splitter device is a planar waveguide type optical splitter.

4. The miniaturized multi-channel high-speed switching optical switch according to claim 1, wherein The optical splitter device is a fused biconical taper type optical splitter.

5. A small multi-channel high-speed switching optical switch according to claim 1, characterized in that, The optical splitter device is a 1×4 planar optical waveguide, the multi-channel light-emitting chip is a four-channel light-emitting chip, and the multi-core fiber array is a four-core fiber array.

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