Multi-core optical attenuator based on multi-core optical fiber

Abstract

The utility model provides a multi-core optical attenuator based on a multi-core optical fiber, which comprises a multi-core transmitting optical fiber, a multi-core receiving optical fiber and a rotating mirror chip, and is characterized in that the multi-core receiving optical fiber and the multi-core transmitting optical fiber are arranged towards the rotating mirror chip; the multi-core receiving optical fiber is used for outputting multiple beams of optical signals to the rotating mirror chip, the multiple beams of optical signals are reflected to the multi-core receiving optical fiber after passing through the rotating mirror chip, and the multi-core receiving optical fiber is used for receiving the multiple beams of optical signals from the rotating mirror chip; the rotating mirror chip is used for adjusting the angle of the rotating mirror chip so as to change the reflection angle of each beam of optical signals, so that the receiving area of the multi-core receiving optical fiber for each beam of optical signals is adjusted, and power attenuation adjustment of the multiple beams of optical signals is achieved in a single device. The size occupied by the device is smaller, and the integration level is more excellent.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical communication technical field especially relates to a kind of multicore optical attenuator based on multicore optical fiber. BACKGROUND

[0002] The existing optical attenuator is mainly single-core optical fiber, if want to realize the power attenuation adjustment of multiple light beams, it is generally necessary to set multiple single-core optical fibers, and set corresponding optical attenuation device for each single-core optical fiber, not only the manufacturing cost is high, but also the space required by multiple single-core optical fibers is larger, so the integration and size are relatively poor.

[0003] Therefore, overcoming the defects of the prior art is an urgent problem to be solved in the technical field. SUMMARY

[0004] The utility model provides a kind of multicore optical attenuator based on multicore optical fiber, including: multicore transmitting optical fiber 1, multicore receiving optical fiber 2 and mirror turning chip 3, wherein:

[0005] The multicore receiving optical fiber 2 and the multicore transmitting optical fiber 1 are both arranged towards the mirror turning chip 3;

[0006] The multicore transmitting optical fiber 1 is used to output multiple light signals to the mirror turning chip 3, and the multiple light signals are reflected to the multicore receiving optical fiber 2 after passing through the mirror turning chip 3;

[0007] The mirror turning chip 3 is used to adjust its own angle to change the reflection angle of each light signal, so as to adjust the receiving area of the multicore receiving optical fiber 2 for each light signal, and then realize the power attenuation adjustment of multiple light signals.

[0008] Preferably, the multicore transmitting optical fiber 1 includes a first predetermined number of transmitting fiber cores 11, and the multicore receiving optical fiber 2 includes a first predetermined number of receiving fiber cores 21.

[0009] The transmitting fiber cores 11 and the receiving fiber cores 21 correspond one-to-one, the transmitting fiber cores 11 are used to output light signals to the mirror turning chip 3, and the receiving fiber cores 21 are used to receive the light signals output by the corresponding transmitting fiber cores 11.

[0010] Preferably, the first predetermined number is 4, the core spacing of the transmitting fiber cores 11 in the multicore transmitting optical fiber 1 is 51±1um, and the core spacing of the receiving fiber cores 21 in the multicore receiving optical fiber 2 is 51±1um.

[0011] Preferably, the first predetermined number is 4, the core spacing of the transmitting fiber cores 11 in the multicore transmitting optical fiber 1 is 51±1um, and the core spacing of the receiving fiber cores 21 in the multicore receiving optical fiber 2 is 51±1um.

[0012] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a double-core capillary tube 4, one end of the double-core capillary tube 4 is towards the rotating mirror chip 3, and the other end of the double-core capillary tube 4 is away from the rotating mirror chip 3.

[0013] The double-core capillary tube 4 is provided with a core-placing square hole 41, the core-placing square hole 41 penetrates from one end face of the double-core capillary tube 4 to the other end face of the double-core capillary tube 4, the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 are arranged in the core-placing square hole 41, and the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 extend to the end face of the one end of the double-core capillary tube 4 towards the rotating mirror chip 3.

[0014] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a double-core capillary tube 4, one end of the double-core capillary tube 4 is towards the rotating mirror chip 3, and the other end of the double-core capillary tube 4 is away from the rotating mirror chip 3.

[0015] The double-core capillary tube 4 is provided with two core-placing round holes 42, both of the core-placing round holes 42 penetrate from one end face of the double-core capillary tube 4 to the other end face of the double-core capillary tube 4, the multi-core transmitting optical fiber 1 is arranged in one of the core-placing round holes 42, and the multi-core receiving optical fiber 2 is arranged in the other core-placing round hole 42, and the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 extend to the end face of the one end of the double-core capillary tube 4 towards the rotating mirror chip 3.

[0016] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a collimating lens 5, the collimating lens 5 is located between the double-core capillary tube 4 and the rotating mirror chip 3.

[0017] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a sleeve 6, one end of the sleeve 6 is sleeved on the periphery of the double-core capillary tube 4 and is fixed with the periphery of the double-core capillary tube 4, and the other end of the sleeve 6 is sleeved on the periphery of the collimating lens 5 and is fixed with the periphery of the collimating lens 5.

[0018] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a base 7, a positive electrode pin 71 and a negative electrode pin 72, wherein:

[0019] One side of the base 7 is towards the collimating lens 5, and the rotating mirror chip 3 is arranged on the side face of the base 7 towards the collimating lens 5;

[0020] The positive electrode pin 71 and the negative electrode pin 72 are both arranged on the other side of the base 7, and the positive electrode pin 71 and the negative electrode pin 72 both pass through the base 7 and are connected with the rotating mirror chip 3.

[0021] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a gasket 8, which is arranged between the rotating mirror chip 3 and the base 7.

[0022] Preferably, the multi-core optical fiber-based multi-core optical attenuator further comprises a sealed shell 9, wherein:

[0023] One end of the sealed shell 9 is sleeved on the periphery of the collimating lens 5 and is fixed with the periphery of the collimating lens 5, and the other end of the sealed shell 9 is arranged on the side of the base 7 facing the collimating lens 5, and the rotating mirror chip 3 is located inside the sealed shell 9.

[0024] The utility model provides a kind of multi-core optical fiber-based multi-core optical attenuator, comprising: multi-core transmitting optical fiber, multi-core receiving optical fiber and rotating mirror chip, the multi-core receiving optical fiber and the multi-core transmitting optical fiber are all arranged towards the rotating mirror chip;The multi-core receiving optical fiber is used to output multiple beam optical signal to the rotating mirror chip, and the multiple beam optical signal is reflected to the multi-core receiving optical fiber after passing through the rotating mirror chip, and the multi-core receiving optical fiber is used to receive multiple beam optical signal from the rotating mirror chip;The rotating mirror chip is used to adjust its angle, to change the reflection angle of each beam optical signal, so as to adjust the receiving area of multi-core receiving optical fiber for each beam optical signal, and then realize the power attenuation adjustment of multiple beam optical signal in single device, and since multi-core optical fiber is used, compared with multiple single-core optical fiber, the size occupied by device is smaller, and the integration is more excellent. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0026] Figure 1 A structure schematic view of a multi-core optical fiber-based multi-core optical attenuator provided by the embodiments of the present utility model is shown in the figure.

[0027] Figure 2 An optical path schematic view in another multi-core optical fiber-based multi-core optical attenuator provided by the embodiments of the present utility model is shown in the figure.

[0028] Figure 3 A sectional view of multi-core transmitting optical fiber and multi-core receiving optical fiber in a multi-core optical fiber-based multi-core optical attenuator provided by the embodiments of the present utility model is shown in the figure.

[0029] Figure 4A schematic diagram of the structure of the back-end device of a multi-core transmitting optical fiber based on a multi-core optical attenuator provided for an embodiment of this utility model;

[0030] Figure 5 A schematic diagram of the structure of the back-end device of a multi-core receiving optical fiber based on a multi-core optical attenuator provided for an embodiment of this utility model;

[0031] Figure 6 A schematic diagram of another multi-core optical attenuator based on multi-core optical fiber provided in this embodiment of the present invention;

[0032] Figure 7 A cross-sectional view of a dual-core capillary tube for a multi-core optical attenuator based on a multi-core optical fiber, provided for an embodiment of this utility model;

[0033] Figure 8 A cross-sectional view of a dual-core capillary tube for another multi-core optical attenuator based on multi-core optical fiber provided in this embodiment of the present invention;

[0034] Figure 9 A schematic diagram of another multi-core optical attenuator based on multi-core optical fiber provided in this embodiment of the present invention;

[0035] The diagram is labeled as follows:

[0036] Multi-core transmitting fiber 1; transmitting fiber core 11; first fan-in fan-out device 12; light source device 13; multi-core receiving fiber 2; receiving fiber core 21; second fan-in fan-out device 22; power meter 23; rotating mirror chip 3; dual-core capillary tube 4; core-placement square hole 41; core-placement round hole 42; collimating lens 5; sleeve 6; base 7; positive electrode pin 71; negative electrode pin 72; gasket 8; sealed outer shell 9. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0038] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0039] In the description of the utility model, the terms "first", "second" are only used for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is two or more. In addition, for example, in the description, the same type of nouns will also be described as two independent individuals by adding "A", "B" at the end, in which case the features limited by "A", "B" are only used for the purpose of distinguishing the same type of individual description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.

[0040] In describing some embodiments, "coupled", "coupling" and "connected" and their derivatives can be used. For example, the term "connected" can be used to describe some embodiments to indicate that two or more components have direct physical or electrical contact with each other. For another example, the term "coupling" can be used to describe some embodiments to indicate that two or more components have direct physical or electrical contact. However, the term "connected" or "coupled" can also refer to two or more components that do not have direct contact with each other, but still cooperate or interact with each other, such as "optical coupling", "wireless connection" and the like. The embodiments disclosed herein are not necessarily limited to the content of the utility model.

[0041] In the description of the utility model, the expression "A and / or B" in which A and B are used to represent specific feature content in the form of expression, and the corresponding expression includes the following three combinations: only A, only B, and the combination of A and B.

[0042] In the utility model, "about", "approximately" or "approximately" includes the value described and the average value within the acceptable deviation range of the specific value, wherein the acceptable deviation range is determined by the person skilled in the art considering the measurement being discussed and the error related to the measurement of the specific quantity, that is, the limitation of the measurement system.

[0043] Unless the context clearly requires otherwise, throughout the description and the claims, the word "comprise", and variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers. In description of the specification, the terms "one embodiment", "some embodiments", "an example embodiment", "an example", "a specific example" or "some examples" are intended to mean that a particular feature, structure, material, or characteristic is included in at least one embodiment or example of the present disclosure. These terms are not necessarily intended to refer to the same embodiment or example. Furthermore, these terms are not necessarily intended to refer to an embodiment or example that comprises all of the features, structures, materials, or characteristics noted together in the same example or embodiment. In addition, the described particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples, even though they can be carried by an embodiment or example of the above-mentioned terms due to the order of appearance and location, etc.

[0044] In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as there is no conflict.

[0045] Embodiment 1:

[0046] The utility model discloses an embodiment provides a kind of multi-core optical attenuator based on multi-core optical fiber, as shown in Figure 1 It includes: multi-core transmitting optical fiber 1, multi-core receiving optical fiber 2 and mirror turning chip 3, wherein:

[0047] The multi-core receiving optical fiber 2 and the multi-core transmitting optical fiber 1 are both arranged towards the mirror turning chip 3; the multi-core transmitting optical fiber 1 is used to output multiple light signals to the mirror turning chip 3, and the multiple light signals are reflected to the multi-core receiving optical fiber 2 after passing through the mirror turning chip 3; the mirror turning chip 3 is used to adjust its angle to change the reflection angle of each light signal, so as to adjust the receiving area of the multi-core transmitting optical fiber 1 for each light signal, and then realize the power attenuation adjustment of multiple light signals.

[0048] In this embodiment, the multi-core transmitting optical fiber 1 includes multiple cores, and the multi-core receiving optical fiber 2 includes the same number of cores as the multi-core transmitting optical fiber 1, as shown in Figure 2 Each core in the multi-core transmitting optical fiber 1 emits light signals individually, and after being reflected by the mirror turning chip 3, it is received by the corresponding core in the multi-core receiving optical fiber 2. In this embodiment, since the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 are arranged correspondingly, the light signals emitted by each core will be reflected from the same mirror turning chip 3, so the reflection angles are the same, which makes the power attenuation of the light signals received by each core in the multi-core receiving optical fiber 2 consistent, realizing the power attenuation adjustment of multiple light beams in a single device.

[0049] In the embodiment, the rotating mirror chip 3 comprises a reflecting rotating mirror and a base plate, the reflecting rotating mirror is arranged on the base plate, the reflecting rotating mirror can be made of a magnetic material, the positive and negative poles on the base plate are respectively communicated with external devices, corresponding voltages are transmitted to the positive and negative poles of the rotating mirror chip 3 through the external devices, so as to adjust the electromagnetic force of the positive or negative pole on the base plate, so as to realize different degrees of attraction of the reflecting rotating mirror, and realize the deflection of the reflecting rotating mirror at different angles. In the embodiment, the rotating mirror chip 3 can be a one-dimensional micro-optical mechanical system rotating mirror chip.

[0050] Further, as shown in Figure 3 , the multi-core transmitting optical fiber 1 comprises a first preset number of transmitting fiber cores 11, and the multi-core receiving optical fiber 2 comprises a first preset number of receiving fiber cores 21; the transmitting fiber cores 11 and the receiving fiber cores 21 correspond one by one, the transmitting fiber cores 11 are used for outputting optical signals to the rotating mirror chip 3, and the receiving fiber cores 21 are used for receiving the optical signals output by the corresponding transmitting fiber cores 11.

[0051] As shown in Figure 3 , the first preset number is 4, the core spacing of the transmitting fiber cores 11 in the multi-core transmitting optical fiber 1 is 51±1um, and the core spacing of the receiving fiber cores 21 in the multi-core receiving optical fiber 2 is 51±1um.

[0052] As shown in Figure 3 , in the embodiment, when the first preset number is 4, the transmitting fiber cores 11 are arranged in a square on the cross section of the multi-core transmitting optical fiber 1. The core spacing of the transmitting fiber cores 11 in the multi-core transmitting optical fiber 1 can be 50um, the core spacing of the transmitting fiber cores 11 in the multi-core transmitting optical fiber 1 can be 51um, and the core spacing of the transmitting fiber cores 11 in the multi-core transmitting optical fiber 1 can be 52um; the core spacing of the receiving fiber cores 21 in the multi-core receiving optical fiber 2 can be 50um, the core spacing of the receiving fiber cores 21 in the multi-core receiving optical fiber 2 can be 51um, and the core spacing of the receiving fiber cores 21 in the multi-core receiving optical fiber 2 can be 52um.

[0053] Further, as shown in Figure 4 , in the embodiment, in order to realize the separate transmission of optical signals of each transmitting fiber core 11 in the multi-core transmitting optical fiber 1, one end of the multi-core transmitting optical fiber 1 opposite to the rotating mirror chip 3 is also connected with the output end of the first fan-in fan-out device 12, and the input end of the first fan-in fan-out device 12 is respectively connected with the first preset number of light source devices 13; the first preset number of light source devices 13 transmit the first preset number of optical signals to the first fan-in fan-out device 12, and the first preset number of optical signals are respectively input into the corresponding transmitting fiber cores 11 through the first fan-in fan-out device 12, so as to realize the output of the multi-beam optical signals of the multi-core transmitting optical fiber 1.

[0054] In this embodiment, in order to achieve individual measurement of the optical signal of each receiving fiber core 21 in the multi-core receiving optical fiber 2, such as... Figure 5 As shown, one end of the multi-core receiving fiber 2 facing away from the rotating mirror chip 3 is also connected to the input end of the second fan-in fan-out device 22. The output end of the second fan-in fan-out device 22 is connected to a first preset number of power meters 23 respectively. The first preset number of receiving fiber cores 21 transmit optical signals to the second fan-in fan-out device 22. The second fan-in fan-out device 22 transmits the first preset number of optical signals to the corresponding power meters 23 respectively. The power meters 23 measure the power of the optical signal in each receiving fiber core 21 to obtain the attenuation of the corresponding optical signal.

[0055] In this embodiment, in order to integrate the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 into the same device, the following design is also involved:

[0056] like Figure 6 and Figure 7 As shown, the multi-core optical attenuator based on multi-core optical fiber also includes a dual-core capillary tube 4, one end of which faces the rotating mirror chip 3, and the other end of which faces away from the rotating mirror chip 3; the dual-core capillary tube 4 is provided with a core-holding square hole 41, which extends from one end face of the dual-core capillary tube 4 to the other end face of the dual-core capillary tube 4, and the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 are both disposed in the core-holding square hole 41, and the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 both extend to the end face of the dual-core capillary tube 4 facing the rotating mirror chip 3.

[0057] In this embodiment, the core-inserting square hole 41 has a square cross-sectional shape, which is used to simultaneously accommodate the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2. Due to its large cross-sectional area, the core-inserting square hole 41 is more conducive to optical fiber insertion.

[0058] like Figure 6 and Figure 8As shown, in addition to the aforementioned core-placement square hole 41, this embodiment also provides another type of dual-core capillary tube 4. One end of the dual-core capillary tube 4 faces the rotating mirror chip 3, and the other end of the dual-core capillary tube 4 faces away from the rotating mirror chip 3. The dual-core capillary tube 4 is provided with two core-placement circular holes 42. Both core-placement circular holes 42 extend from one end face of the dual-core capillary tube 4 to the other end face of the dual-core capillary tube 4. The multi-core transmitting optical fiber 1 is disposed in one of the core-placement circular holes 42, and the multi-core receiving optical fiber 2 is disposed in the other core-placement circular hole 42. Both the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 extend to the end face of the dual-core capillary tube 4 facing the rotating mirror chip 3. The core-placement circular hole 42 has a circular cross-sectional shape, and its cross-sectional area is slightly larger than that of the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2. Compared with the core-placement square hole 41, the core-placement circular hole 42 matches the cross-sectional shape of the optical fiber, thus providing a more stable fixation for the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2.

[0059] In this embodiment, the outer diameter of the dual-core capillary tube 4 can be 1±0.1mm or 1.8±0.1mm. Before the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 are inserted into the dual-core capillary tube 4, the outer coating of the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 needs to be removed. After the multi-core transmitting optical fiber 1 and the multi-core receiving optical fiber 2 are inserted into the dual-core capillary tube 4, they are fixed inside the dual-core capillary tube 4 by adhesive.

[0060] In this embodiment, the end face of the dual-core capillary 4 facing the rotating mirror chip 3 is also ground to a preset tilt angle, which can be 8 degrees or 11 degrees. An anti-reflection film can also be deposited on the end face of the dual-core capillary 4 facing the rotating mirror chip 3 to improve transmission performance.

[0061] Furthermore, before the optical signal is output from the multi-core transmitting fiber 1 and received by the multi-core receiving fiber 2, the optical signal needs to be collimated. Therefore, this embodiment also involves the following design:

[0062] like Figure 9 As shown, the multi-core optical attenuator based on multi-core optical fiber also includes a collimating lens 5, which is located between the dual-core capillary tube 4 and the rotating mirror chip 3.

[0063] In this embodiment, the collimating lens 5 can be a G lens or a C lens, the outer diameter of the collimating lens 5 can be 1±0.1mm or 1.8±0.1mm, and the two ends of the collimating lens 5 are coated with anti-reflection coatings.

[0064] Furthermore, the dual-core capillary tube 4 and the collimating lens 5 need to be integrated to improve the overall integration of the device. Therefore, the following design is also involved:

[0065] As shown in Figure 9 The multi-core optical fiber-based multi-core optical attenuator further comprises a sleeve 6, one end of which is sleeved on the periphery of the double-core capillary 4 and fixed with the periphery of the double-core capillary 4, and the other end of which is sleeved on the periphery of the collimating lens 5 and fixed with the periphery of the collimating lens 5. In this embodiment, the sleeve 6 can be made of glass, metal or plastic.

[0066] In this embodiment, in order to realize the control of the rotating mirror chip 3, the following design is involved:

[0067] As shown in Figure 9 The multi-core optical fiber-based multi-core optical attenuator further comprises a base 7, a positive electrode pin 71 and a negative electrode pin 72, wherein: one side of the base 7 faces the collimating lens 5, and the rotating mirror chip 3 is arranged on the side of the base 7 facing the collimating lens 5; the positive electrode pin 71 and the negative electrode pin 72 are both arranged on the other side of the base 7, and both of them pass through the base 7 and connect with the rotating mirror chip 3.

[0068] In this embodiment, the rotating mirror chip 3 can be connected with the positive electrode pin 71 and the negative electrode pin 72 respectively through gold wires, and the positive electrode pin 71 and the negative electrode pin 72 are respectively connected with external devices, which provide corresponding voltages to the positive electrode pin 71 and the negative electrode pin 72 respectively, so as to realize the adjustment of the rotating mirror chip 3.

[0069] As shown in Figure 9 The multi-core optical fiber-based multi-core optical attenuator further comprises a gasket 8 arranged between the rotating mirror chip 3 and the base 7.

[0070] In this embodiment, the gasket 8 can be fixed on the base 7 by gluing, and the gasket 8 can be a wedge-shaped piece with an angle, which can be made of glass or ceramic, and the corresponding angle can be 2.5-4.5 degrees. The gasket 8 is used to optimize the optical path and improve the wavelength-dependent loss.

[0071] As shown in Figure 9 The multi-core optical fiber-based multi-core optical attenuator further comprises a sealed shell 9, wherein:

[0072] One end of the sealed shell 9 is sleeved on the periphery of the collimating lens 5 and fixed with the periphery of the collimating lens 5, and the other end of the sealed shell 9 is arranged on the side of the base 7 facing the collimating lens 5, and the rotating mirror chip 3 is located inside the sealed shell 9. In this embodiment, the sealed shell 9 can be made of stainless steel or alloy material.

[0073] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multicore optical fiber-based multicore optical attenuator characterized by, The application relates to a multi-core optical fiber-based multi-core optical attenuator. The multi-core transmitting optical fiber (1), the multi-core receiving optical fiber (2) and the mirror turning chip (3) are arranged as follows: The multi-core transmitting optical fiber (1) is used for outputting a plurality of optical signals to the mirror turning chip (3), and the plurality of optical signals are reflected to the multi-core receiving optical fiber (2) after passing through the mirror turning chip (3); The mirror turning chip (3) is used for adjusting the angle of the mirror turning chip (3) to change the reflection angle of each optical signal, thereby adjusting the receiving area of the multi-core receiving optical fiber (2) for each optical signal, and further realizing power attenuation adjustment of the plurality of optical signals. The multi-core transmitting optical fiber (1) comprises a first preset number of transmitting fiber cores (11), and the multi-core receiving optical fiber (2) comprises a first preset number of receiving fiber cores (21); 2. The multi-core fiber-based multi-core optical attenuator according to claim 1, characterized by, The transmitting fiber core (11) and the receiving fiber core (21) are in one-to-one correspondence, the transmitting fiber core (11) is used for outputting an optical signal to the mirror turning chip (3), and the receiving fiber core (21) is used for receiving the optical signal output by the corresponding transmitting fiber core (11). The first preset number is 4, the core spacing of the transmitting fiber core (11) in the multi-core transmitting optical fiber (1) is 51+ / -1um, and the core spacing of the receiving fiber core (21) in the multi-core receiving optical fiber (2) is 51+ / -1um.

3. The multi-core fiber-based multi-core optical attenuator according to claim 2, characterized by, The multi-core optical fiber-based multi-core optical attenuator further comprises a double-core capillary (4), one end of the double-core capillary (4) faces the mirror turning chip (3), and the other end of the double-core capillary (4) faces away from the mirror turning chip (3); 4. The multi-core fiber-based multi-core optical attenuator according to claim 1, characterized by, The double-core capillary (4) is provided with a core placing square hole (41) penetrating from one end face of the double-core capillary (4) to the other end face of the double-core capillary (4), and the multi-core transmitting optical fiber (1) and the multi-core receiving optical fiber (2) are arranged in the core placing square hole (41) and extend to the end face of the one end of the double-core capillary (4) facing the mirror turning chip (3). The multi-core optical fiber-based multi-core optical attenuator further comprises a double-core capillary (4), one end of the double-core capillary (4) faces the mirror turning chip (3), and the other end of the double-core capillary (4) faces away from the mirror turning chip (3); 5. The multi-core optical fiber-based multi-core optical attenuator according to claim 1, characterized by, The double-core capillary (4) is provided with two core placing round holes (42) penetrating from one end face of the double-core capillary (4) to the other end face of the double-core capillary (4), the multi-core transmitting optical fiber (1) is arranged in one of the core placing round holes (42), the multi-core receiving optical fiber (2) is arranged in the other core placing round hole (42), and the multi-core transmitting optical fiber (1) and the multi-core receiving optical fiber (2) extend to the end face of the one end of the double-core capillary (4) facing the mirror turning chip (3). The multi-core optical fiber-based multi-core optical attenuator further comprises a collimating lens (5) located between the double-core capillary (4) and the mirror turning chip (3).

6. The multi-core optical fiber-based multi-core optical attenuator according to claim 5, characterized by, ​ 7. The multi-core optical fiber-based multi-core optical attenuator according to claim 6, characterized by, The multi-core optical fiber-based multi-core optical attenuator further comprises a sleeve (6) sleeved on and fixed to the periphery of the double-core capillary (4) at one end, and sleeved on and fixed to the periphery of the collimating lens (5) at the other end.

8. The multi-core optical fiber-based multi-core optical attenuator according to claim 6, characterized by, The multi-core optical fiber-based multi-core optical attenuator further comprises a base (7), a positive electrode pin (71) and a negative electrode pin (72), wherein: The base (7) is provided with the rotating mirror chip (3) on one side facing the collimating lens (5); The positive electrode pin (71) and the negative electrode pin (72) are both provided on the other side of the base (7) and both pass through the base (7) to connect with the rotating mirror chip (3).

9. The multi-core optical fiber-based multi-core optical attenuator according to claim 8, characterized by, The multi-core optical fiber-based multi-core optical attenuator further comprises a gasket (8) provided between the rotating mirror chip (3) and the base (7).

10. The multi-core optical fiber-based multi-core optical attenuator according to claim 8, characterized by, The multi-core optical fiber-based multi-core optical attenuator further comprises a sealed shell (9), wherein: The sealed shell (9) is sleeved on and fixed to the periphery of the collimating lens (5) at one end, and is provided on the side of the base (7) facing the collimating lens (5) at the other end, and the rotating mirror chip (3) is located inside the sealed shell (9).

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