Compact polarization controller and table type polarization control device

Abstract

The utility model discloses a compact polarization controller and a table type polarization control device. The compact polarization controller comprises a lower shell, an upper shell and a polarization mechanism, each polarization mechanism comprises a polarization wave plate and an automatic adjusting piece, the lower shell is provided with a containing channel, at least part of two adjacent polarization mechanisms are oppositely arranged, the multiple polarization wave plates located in the same containing channel are coaxial, and the two opposite sides of the lower shell are each provided with an optical fiber piece interface. According to the utility model, through the arrangement of the automatic adjusting part, the accurate adjustment of the rotation angle of the polarization wave plate is realized, so that the accurate control of the polarization state in the optical fiber is realized, the position of the polarization wave plate is kept unchanged after the automatic adjusting part is adjusted, and the stability of the position of the polarization wave plate is improved; besides, part of the polarization mechanisms are oppositely arranged, so that the installation space of the polarization mechanisms is saved, the size of the polarization controller is further reduced, and the polarization controller with the small size is easier to integrate into various systems.

Description

TECHNICAL FIELD

[0001] The utility model relates to polarization controller technical field, concretely is a compact polarization controller and desk type polarization control device. BACKGROUND

[0002] Polarization controller is mainly used for controlling, change light's polarization state, can change into the polarization state that output end formulates with arbitrary polarization state input polarized light, the polarization controller of current includes fiber ring type polarization controller, fiber ring polarization controller passes through winding fiber on the tray, causes fiber to generate birefringence by stress, makes input light produce phase shift in two polarization directions, thereby realizes polarization control, fiber polarization control is all manual operation, position keeping performance is poor, makes the precision of adjustment greatly reduces, the reduction of precision can make the stability of polarization light that it outputs. SUMMARY

[0003] The utility model discloses a compact polarization controller and desk type polarization control device to solve the problem that the fiber polarization control of existing is all manual operation, position keeping performance is poor, makes the precision of adjustment greatly reduces.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A compact polarization controller, including lower casing, upper casing and a plurality of polarization mechanism of installing in the lower casing, the upper casing is installed in the lower casing top, the lower casing includes the first partial casing and the second partial casing of splicing, the polarization mechanism includes polarization wave sheet and the automatic adjustment spare that can drive polarization wave sheet rotation, the lower casing is provided with at least one and passes through the receiving channel of the polarization wave sheet of opposite sides of lower casing, at least partial polarization wave sheet of two adjacent polarization mechanisms is coaxial and located in the same receiving channel, the opposite sides of the lower casing are provided with fiber piece interface, and the fiber piece interface of both sides is respectively with the both ends of receiving channel and penetrates and coaxial.

[0006] Further, the first partial casing is provided with a plurality of mounting slots one, and at least partial two adjacent mounting slots one is opposite, the second partial casing is provided with a plurality of mounting slots two corresponding to the mounting slot one, the mounting slot one penetrates the opposite slot wall of the receiving channel, and the mounting slot one and the mounting slot two are formed around the mounting part, and the mounting part is used to install the polarization mechanism.

[0007] Further, the automatic adjusting member comprises an adjusting drive and an adjusting seat with a hollow shaft, the adjusting drive is mounted on a part of the mounting slot located on one side of the accommodating channel, the adjusting seat is rotatably mounted on another part of the mounting slot and the mounting slot two, and the adjusting seat is coaxial with the accommodating channel, the polarized wave plate is coaxially mounted in the hollow shaft, the output end of the adjusting drive is connected with the adjusting seat and drives the adjusting seat to rotate circumferentially to drive the polarized wave plate to rotate and adjust.

[0008] Further, the adjusting drive adopts a rotary motor, the adjusting seat adopts a worm gear, and the rotary motor is connected with the worm gear through a worm transmission.

[0009] Further, the hollow shaft of the worm gear is coaxially sleeved with mounting seats at both axial ends, and the worm gear is connected with the accommodating channel through the mounting seats.

[0010] Further, the lower shell is provided with an accommodating channel, the first sub-shell and the second sub-shell are both provided with through grooves, and the through grooves of the two are enclosed to form the accommodating channel.

[0011] Further, the mounting slot two penetrates through opposite ends of the second sub-shell, and a slot opening of the mounting slot two is communicated with the accommodating channel.

[0012] Further, the polarized mechanism further comprises a photoelectric detector, the photoelectric detector is mounted on another slot opening of the mounting slot two, a detection groove is formed on one side of the photoelectric detector facing the accommodating channel, and the adjusting seat is partially accommodated in the detection groove.

[0013] Further, the optical fiber piece interface comprises a fiber collimator fixing tube, and the fiber collimator fixing tube is mounted on the lower shell through a mounting block.

[0014] The utility model also provides a desk type polarization control device which comprises the compact polarization controller.

[0015] Compared with the prior art, the utility model has the advantages that: the polarization mechanism comprises a polarized wave plate and an automatic adjusting member, the polarized wave plate is made of a birefringent material, so that the polarized wave plate can realize accurate control of the polarization state of light in a very small volume, the automatic adjusting member is arranged to accurately adjust the rotation angle of the polarized wave plate, thereby realizing accurate control of the polarization state in the optical fiber, and the automatic adjusting member keeps the position of the polarized wave plate unchanged after adjustment, thereby improving the stability of the position of the polarized wave plate; in addition, the polarization mechanism is arranged oppositely, the installation space of the polarization mechanism is saved, the first sub-shell and the second sub-shell integrate and package the polarization mechanism, the volume of the polarization controller is further reduced, and the polarization controller with a small volume is easier to be integrated into various systems.

[0016] The desktop polarization control device provided by the utility model contains the aforementioned compact polarization controller, and thus has the same functions as the compact polarization controller. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A structure schematic diagram of the compact polarization controller is disclosed for the utility model embodiment.

[0018] Figure 2 For Figure 1 The explosion structure schematic diagram of part structure is disclosed for the utility model embodiment.

[0019] Figure 3 For Figure 2 The explosion structure schematic diagram of part structure is disclosed for the utility model embodiment.

[0020] Figure 4 For Figure 3 The explosion structure schematic diagram of part structure is disclosed for the utility model embodiment.

[0021] In the drawing: 1, upper shell; 2, lower shell; 21, first sub-shell; 211, mounting groove one; 212, through groove; 22, second sub-shell; 221, mounting groove two; 3, polarization mechanism; 31, adjusting drive; 311, rotary motor; 312, worm; 32, adjusting seat; 321, hollow shaft; 322, mounting seat; 33, photoelectric detector; 331, detection groove; 4, optical fiber piece interface; 5, mounting block. DETAILED DESCRIPTION

[0022] In order to make the personnel in the technical field better understand the utility model scheme, the utility model is further explained in detail below in combination with the drawings and specific embodiments.

[0023] In this paper, the terms such as "up, down, inside, outside" are established based on the positional relationship shown in the drawing, and according to the different drawings, the corresponding positional relationship may also change accordingly, therefore, it cannot be understood as an absolute limitation on the scope of protection; moreover, the relationship terms such as "first" and "second" are only used to distinguish one component from another component with the same name, and do not necessarily require or imply any such actual relationship or order between the components.

[0024] Embodiment one

[0025] For example Figures 1-4As shown, the compact polarization controller disclosed in the embodiment comprises a lower shell 2, an upper shell 1 and a plurality of polarization mechanisms 3 mounted on the lower shell 2; the upper shell 1 is mounted on the top of the lower shell 2, the lower shell 2 comprises a first sub-shell 21 and a second sub-shell 22 which are spliced together, the polarization mechanism 3 comprises a polarization wave plate and an automatic adjusting member which can drive the polarization wave plate to rotate, the lower shell 2 is provided with at least one containing passage which contains the polarization wave plate and penetrates through the opposite sides of the lower shell 2, and the polarization wave plates of at least part of the adjacent two polarization mechanisms 3 are coaxially arranged and located in the same containing passage; the opposite sides of the lower shell 2 are provided with fiber interfaces 4, and the fiber interfaces 4 on the two sides are coaxially and penetratively arranged at the two ends of the containing passage respectively.

[0026] Specifically, the polarization mechanism 3 comprises a polarization wave plate and an automatic adjusting member, the polarization wave plate is made of a birefringent material, so that the polarization wave plate can realize accurate control of the polarization state of light in a very small volume, and through the arrangement of the automatic adjusting member, the rotation angle of the polarization wave plate can be accurately adjusted, so as to realize accurate control of the polarization state in the optical fiber, and the automatic adjusting member keeps the position of the polarization wave plate unchanged after adjustment, thereby improving the stability of the position of the polarization wave plate; in addition, by arranging part of the polarization mechanisms 3 oppositely, the installation space of the polarization mechanisms 3 is saved, so that the first sub-shell 21 and the second sub-shell 22 integrate and package the polarization mechanisms 3, thereby further reducing the volume of the polarization controller, and the polarization controller with small volume is easier to be integrated into various systems. It can be understood that the first sub-shell 21 and the second sub-shell 22 can be spliced horizontally or vertically, and the specific splicing manner is not limited.

[0027] More specifically, the working process of the compact polarization controller is as follows: the signal light enters the device through one side of the fiber interface 4, passes through a plurality of polarization mechanisms 3 in sequence, the signal light is processed by the polarization mechanisms 3, and is output through the other side of the fiber interface 4.

[0028] More specifically, as shown in FIG. 2, the polarization wave plate is arranged in the polarization mechanism 3, and the polarization wave plate is driven by the automatic adjusting member to rotate, so that the polarization state of the signal light can be controlled accurately. Figure 2 and Figure 3As shown, the lower shell 2 is provided with a containing channel, the first sub-shell 21 and the second sub-shell 22 are both provided with a through groove 212, and the through grooves 212 of the two are enclosed to form the containing channel; the lower shell 2 is installed with three polarizing mechanisms 3 arranged at intervals, wherein the polarizing wave plates of the polarizing mechanisms 3 located on both sides adopt quarter polarizing wave plates, and the polarizing wave plate of the polarizing mechanism 3 located in the middle adopts a half polarizing wave plate, and by adjusting the three polarizing wave plates, the ergodicity of the output polarization state of the light wave can be realized; the quarter polarizing wave plate is used to convert linearly polarized light into circularly polarized light or elliptically polarized light, and the half polarizing wave plate is used to change the phase of the light wave, that is, the half polarizing wave plate changes the polarization direction of the light, thereby realizing the adjustment of the polarization state. The combination of the two kinds of polarizing wave plates can realize fine control of the polarization state of the light wave. Of course, the containing channel can also be provided with more than two, which is selected according to the actual situation, and is not limited here; it can be understood that the number of polarizing mechanisms 3 is not limited, and is selected according to the actual situation, in addition, the selection of the polarizing wave plate is also not limited, and is selected and combined according to the actual situation.

[0029] Further, as shown in Figure 3 and Figure 4 , the first sub-shell 21 is provided with a plurality of installation grooves 211, at least part of the adjacent two installation grooves 211 are oppositely arranged, the second sub-shell 22 is provided with a plurality of installation grooves 221 corresponding to the installation grooves 211, the installation grooves 211 penetrate the opposite two groove walls of the containing channel, and the installation grooves 211 and the installation grooves 221 correspondingly form an installation part, the installation part is used to install the polarizing mechanism 3, the installation part contains the polarizing mechanism 3, and the installation and positioning of the polarizing mechanism 3 are realized.

[0030] Further, as shown in Figure 4 , the automatic adjusting part includes an adjusting drive 31 and an adjusting seat 32 with a hollow shaft 321, the adjusting drive 31 is installed on the part of the installation groove 211 located on one side of the containing channel, the adjusting seat 32 is rotationally installed on the other part of the installation groove 211 and the installation groove 221, and the adjusting seat 32 is coaxial with the containing channel, the polarizing wave plate is coaxially installed in the hollow shaft 321, and the output end of the adjusting drive 31 is connected to the adjusting seat 32 and drives the adjusting seat 32 to rotate circumferentially to drive the polarizing wave plate to rotate and adjust; specifically, the output end of the adjusting drive 31 drives the adjusting seat 32 to rotate circumferentially, the adjusting seat 32 rotates to drive the polarizing wave plate to rotate, the polarizing wave plate rotates to change the polarization state in the optical fiber, and the polarization state in the optical fiber is accurately controlled.

[0031] More specifically, as shown in Figure 3 and Figure 4As shown, the adjusting drive 31 adopts a rotary motor 311, the adjusting seat 32 adopts a worm gear, and the rotary motor 311 and the worm gear are drivingly connected through a worm 312; the rotary motor 311 is a precision motor, the precision motor rotates the worm gear through the worm 312, a polarized wave sheet is attached in the middle of the worm gear, and the polarized wave sheet rotationally changes the polarization state in the optical fiber.

[0032] Further, as shown in Figure 3 and Figure 4 the mounting groove two 221 penetrates through opposite ends of the second split housing 22, and one slot of the mounting groove two 221 is communicated with the containing channel; in order to further realize the accurate control of the polarization state in the optical fiber, the polarization mechanism 3 further comprises a photoelectric detector 33, the photoelectric detector 33 is installed in the other slot of the mounting groove two 221, a detection groove 331 is formed on the side of the photoelectric detector 33 facing the containing channel, and the adjusting seat 32 is partially contained in the detection groove 331; the photoelectric detector 33 has a photoelectric sensor, the photoelectric sensor is installed in the detection groove 331, and the photoelectric sensor is a photoelectric position sensor, which can accurately monitor the rotating position of the worm gear in the detection groove 331, and cooperate with the control circuit board to realize the accurate control of the rotation of the worm gear, so as to realize the accurate control of the rotation of the polarized wave sheet.

[0033] Further, as shown in Figures 2 to 4 the optical fiber interface 4 comprises an optical fiber collimator fixing tube, and the optical fiber collimator fixing tube is installed on the lower housing 2 through the mounting block 5; the optical fiber interface 4 is used for fixing the optical fiber collimator, and the main function of the optical fiber collimator is to convert the divergent light emitted by the optical fiber into a nearly parallel light beam.

[0034] Embodiment two

[0035] In this embodiment, the same parts as in embodiment one are given the same reference numerals, and the same textual description is omitted.

[0036] The utility model discloses a kind of desktop polarized control devices, including the polarization controller of above-mentioned embodiment.

[0037] The technical features of the above-described embodiments can be combined arbitrarily, and to make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combination of these technical features does not exist contradictory, it should be considered that it is within the scope of the present specification.

Claims

1. A compact polarization controller characterized by, The compact polarization controller comprises a lower shell, an upper shell and a plurality of polarization mechanisms mounted on the lower shell; the upper shell is mounted on the top of the lower shell; the lower shell comprises a first sub-shell and a second sub-shell which are assembled together; the polarization mechanism comprises a polarization wave plate and an automatic adjusting member which can drive the polarization wave plate to rotate; the lower shell is provided with at least one accommodating channel which accommodates the polarization wave plate and penetrates through the opposite sides of the lower shell; the polarization wave plates of at least some adjacent polarization mechanisms are coaxially arranged and located in the same accommodating channel; the opposite sides of the lower shell are provided with fiber interfaces which penetrate through and are coaxial with the two ends of the accommodating channel respectively.

2. The compact polarization controller of claim 1, wherein, The first sub-shell is provided with a plurality of mounting grooves I, at least some adjacent mounting grooves I are arranged oppositely; the second sub-shell is provided with a plurality of mounting grooves II which correspond to the mounting grooves I one by one; the mounting grooves I penetrate through the opposite groove walls of the accommodating channel; the mounting grooves I and the mounting grooves II correspond to each other to form mounting portions; the mounting portions are used to mount the polarization mechanisms.

3. The compact polarization controller of claim 2, wherein, The automatic adjusting member comprises an adjusting drive and an adjusting seat with a hollow shaft; the adjusting drive is mounted on the part of the mounting groove I which is located on one side of the accommodating channel; the adjusting seat is rotatably mounted on the other part of the mounting groove I and the mounting groove II and coaxial with the accommodating channel; the polarization wave plate is coaxially mounted in the hollow shaft; the output end of the adjusting drive is connected to the adjusting seat and drives the adjusting seat to rotate circumferentially so as to drive the polarization wave plate to rotate and adjust.

4. The compact polarization controller of claim 3, wherein, The adjusting drive adopts a rotary motor; the adjusting seat adopts a worm gear; the rotary motor and the worm gear are connected through a worm transmission.

5. The compact polarization controller of claim 4, wherein, The opposite axial ends of the hollow shaft of the worm gear are coaxially sleeved with mounting seats; the worm gear and the accommodating channel are connected through the mounting seats.

6. The compact polarization controller of claim 3, wherein, The lower shell is provided with one accommodating channel; the first sub-shell and the second sub-shell are both provided with through grooves which form the accommodating channel.

7. The compact polarization controller of claim 6, wherein, The mounting groove II penetrates through the opposite ends of the second sub-shell; one groove opening of the mounting groove II communicates with the accommodating channel.

8. The compact polarization controller of claim 7, wherein, The polarization mechanism further comprises a photoelectric detector; the photoelectric detector is mounted on the other groove opening of the mounting groove II; the side of the photoelectric detector which faces the accommodating channel forms a detection groove; the adjusting seat is partially accommodated in the detection groove.

9. The compact polarization controller of claim 8, wherein, The fiber interface comprises a fiber collimator fixing tube; the fiber collimator fixing tube is mounted on the lower shell through a mounting block.

10. A benchtop polarization control device, characterized by, The compact polarization controller comprises the compact polarization controller according to any one of claims 1-9.

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