Adjustable optical fiber filter

Abstract

The utility model discloses an adjustable optical fiber filter comprising a housing, a collimating mirror arranged on the right side of the bottom wall of the housing, and an adjusting mechanism. The adjusting mechanism comprises a sliding groove, a sliding block, an MEMS reflecting mirror, a worm gear, a rotating rod, a key groove and a worm, the sliding groove is formed in the middle of the bottom wall of the shell, the sliding block is slidably connected into the sliding groove, the MEMS reflecting mirror is rotationally connected to the upper end of the sliding block, the worm gear fixedly sleeves the outer surface of a connecting shaft on the upper side of the MEMS reflecting mirror, the rotating rod is rotationally connected between the left side wall and the right side wall of the shell, and the key groove is formed in the middle of the bottom wall of the shell. According to the adjustable optical fiber filter, the distance between the MEMS reflecting mirror and the collimating mirror can be adjusted while the angle of the MEMS reflecting mirror is adjusted, so that the adjusting range of optical fiber signals is larger, and the optical fiber signals can be adjusted more accurately. And the optical fiber signal processing capability is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical fiber filter, concretely is a kind of adjustable optical fiber filter. BACKGROUND

[0002] ‌Adjustable optical fiber filter‌It is an optical device that can adjust its filtering characteristics as needed, mainly used for wavelength selection and signal processing in the fields of optical fiber communication, spectral analysis and laser technology;

[0003] In the prior art: the patent with authorized publication number CN116107033A discloses a kind of optical fiber wavelength tunable filter, including several pairs n pairs of optical fiber, optical fiber sleeve, collimating lens, grating, quarter-wave plate and MEMS rotating mirror, the outer wall of the n pairs of optical fiber is sleeved with optical fiber sleeve, one side of the n pairs of optical fiber is provided with collimating lens, the side of collimating lens away from n pairs of optical fiber is provided with grating, the side of grating away from collimating lens is provided with quarter-wave plate, the side of quarter-wave plate away from grating is provided with MEMS rotating mirror.The outer wall of the n pairs of optical fiber and the inner wall of the optical fiber sleeve are mutually bonded and fixed by glue, the side end face of the n pairs of optical fiber and the optical fiber sleeve is polished, and the end face is coated with anti-reflection film;

[0004] This kind of adjustable optical fiber filter has the following shortcomings: the angle of MEMS rotating mirror is adjusted to realize the adjustment of optical fiber signal wavelength, but the effective adjustment angle of MEMS rotating mirror is limited, and the adjustment range of optical fiber signal wavelength is small, and the optical fiber signal processing capacity is weak, so we propose a kind of adjustable optical fiber filter. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, provide an adjustable optical fiber filter, which can adjust the position of MEMS mirror while adjusting the angle of MEMS mirror, so that the adjustment range of optical fiber signal is larger, the optical fiber signal processing capacity is stronger, and the problems in the background art can be effectively solved.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an adjustable optical fiber filter, comprising a shell, a collimating mirror is arranged on the right side of the bottom wall of the shell, further comprising an adjusting mechanism.

[0007] Adjusting mechanism: it includes sliding slot, sliding block, MEMS mirror, worm gear, rotating rod, key groove and worm, the middle of the bottom wall of the shell is provided with a sliding slot, the inside of the sliding slot is slidably connected with a sliding block, the upper end of the sliding block is rotatably connected with a MEMS mirror, the upper side of the MEMS mirror is fixedly provided with a worm gear on the outer surface of the shaft, the left and right side walls of the shell are rotatably connected with a rotating rod, the outer surface of the rotating rod is provided with symmetrically distributed key grooves, the worm is slidably connected between the two key grooves through a key, and the worm is meshingly connected with the worm gear; the distance between the MEMS mirror and the collimating mirror can be adjusted while the angle of the MEMS mirror is adjusted, the adjustment range of the fiber signal is larger, and the fiber signal processing capacity is stronger.

[0008] Further, the front side of the shell is provided with a control switch, the input end of the control switch is electrically connected with an external power supply, and the control switch controls the electrical appliance.

[0009] Further, the left and right side walls of the sliding slot are rotatably connected with a lead screw, and the lead screw is threadedly connected with the sliding block to drive the sliding block to slide.

[0010] Further, the adjusting mechanism further comprises an electric motor, the electric motor is arranged in the mounting groove on the left side of the bottom wall of the shell, the output shaft of the electric motor is fixedly connected with the left side of the lead screw through the circular hole in the left side wall of the sliding slot, the input end of the electric motor is electrically connected with the output end of the control switch, and the electric motor drives the lead screw to rotate.

[0011] Further, the adjusting mechanism further comprises a knob, and the knob is arranged on the left side of the rotating rod to drive the rotating rod to rotate.

[0012] Further, the bottom of the shell is provided with uniformly distributed mounting holes, and the shell is mounted.

[0013] Further, the input optical fiber is inserted into the first jack hole on the right side of the shell, and the output optical fiber is inserted into the second jack hole on the left side of the shell, and the input and output optical fiber signals.

[0014] Compared with the prior art, the adjustable optical fiber filter has the following advantages:

[0015] The sliding block drives the MEMS mirror to slide along the sliding slot, thereby changing the position of the MEMS mirror, the worm drives the worm gear to rotate, thereby driving the MEMS mirror to rotate, thereby realizing the angle adjustment of the MEMS mirror, and the position of the MEMS mirror can be adjusted while the angle of the MEMS mirror is adjusted, so that the adjustment range of the fiber signal is larger, and the fiber signal processing capacity is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 The structure of the utility model is shown in the figure;

[0017] Fig. 2The utility model discloses a sectional view's structure schematic drawing.

[0018] Fig. 3 The utility model discloses the structure schematic drawing of adjusting mechanism.

[0019] In the drawing: 1 shell, 2 mounting hole, 3 input optical fiber, 4 output optical fiber, 5 adjusting mechanism, 51 sliding slot, 52 sliding block, 53 MEMS mirror, 54 worm wheel, 55 rotating rod, 56 key groove, 57 worm, 58 electric motor, 59 knob, 6 collimating mirror, 7 screw rod, 8 control switch. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0021] Please refer to Figs. 1-3 The embodiment provides a kind of technical scheme: a tunable optical fiber filter, including shell 1, the bottom wall right side of shell 1 is provided with collimating mirror 6, still including adjusting mechanism 5;The front side of shell 1 is provided with control switch 8, the input end of control switch 8 is electrically connected external power supply, the bottom of shell 1 is opened with the mounting hole 2 of uniform distribution, the jack one in the right side of shell 1 is inserted with input optical fiber 3, the jack two in the left side of shell 1 is inserted with output optical fiber 4, need first input optical fiber 3 and output optical fiber 4 are inserted in corresponding jack respectively, make fiber signal from input optical fiber 3 enter filter through the collimating mirror 6 mirror dispersion fiber signal collimation, then pass through MEMS mirror 53 and adjust wavelength, finally from output optical fiber 4 output filter;

[0022] The adjusting mechanism 5 comprises a sliding groove 51, a sliding block 52, a MEMS mirror 53, a worm wheel 54, a rotating rod 55, a key groove 56 and a worm 57, the middle part of the bottom wall of the shell 1 is provided with the sliding groove 51, the inside of the sliding groove 51 is slidably connected with the sliding block 52, the upper end of the sliding block 52 is rotatably connected with the MEMS mirror 53, the upper side of the MEMS mirror 53 is fixedly provided with the worm wheel 54, the rotating rod 55 is rotatably connected between the left and right side walls of the shell 1, the outer surface of the rotating rod 55 is provided with the symmetrically distributed key grooves 56, the worm 57 is slidably connected between the two key grooves 56 through a key bar, the worm 57 is meshingly connected with the worm wheel 54, the left and right side walls of the sliding groove 51 are rotatably connected with the lead screw 7, the lead screw 7 is threadedly connected with the sliding block 52, the adjusting mechanism 5 further comprises an electric motor 58, the electric motor 58 is arranged in the mounting groove on the left side of the bottom wall of the shell 1, the output shaft of the electric motor 58 is fixedly connected with the left side of the lead screw 7 through the round hole in the left side wall of the sliding groove 51, the input end of the electric motor 58 is electrically connected with the output end of the control switch 8, the adjusting mechanism 5 further comprises a knob 59, the knob 59 is arranged on the left side of the rotating rod 55, then the position and the angle of the MEMS mirror 53 are adjusted according to the required wavelength, the electric motor 58 is started through the control switch 8, the lead screw 7 is driven to rotate by the electric motor 58, the sliding block 52 is driven to slide along the sliding groove 51 by the lead screw 7, at the same time, since the worm wheel 54 and the worm 57 are in meshing state, the worm 57 is driven to slide along the key groove 56 by the MEMS mirror 53 sliding along the sliding groove 51, so that the worm wheel 54 and the worm 57 remain meshing, until the wavelength of the optical fiber approaches the required wavelength, then the knob 59 is rotated, the rotating rod 55 is driven to rotate by the knob 59, the worm 57 is driven to rotate, the MEMS mirror 53 is driven to rotate by the worm wheel 54, until the wavelength of the optical fiber signal is adjusted to the required range, then the adjustment of the wavelength of the optical fiber signal is completed, the position of the MEMS mirror 53 can be adjusted while the angle of the MEMS mirror 53 is adjusted, so that the adjustment range of the optical fiber signal is larger, and the processing capacity of the optical fiber signal is stronger.

[0023] The working principle of the adjustable optical fiber filter is as follows: when the wavelength of the optical fiber signal is adjusted and filtered, the input optical fiber 3 and the output optical fiber 4 are first inserted into the corresponding jacks respectively, so that the optical fiber signal enters the filter through the collimating mirror 6 to collimate the light fiber signal, and then the wavelength is adjusted through the MEMS mirror 53, and finally the output optical fiber 4 outputs the filter, then the position and angle of the MEMS mirror 53 are adjusted according to the required wavelength, first the control switch 8 is turned on to start the electric motor 58, the electric motor 58 drives the lead screw 7 to rotate the sliding block 52 to drive the MEMS mirror 53 to slide along the sliding groove 51, at the same time, since the worm wheel 54 and the worm 57 are in meshing state, the worm 57 will slide along the key groove 56 to drive the worm wheel 54 and the worm 57 to keep meshing while the MEMS mirror 53 slides along the sliding groove 51, until the wavelength of the optical fiber approaches the required wavelength, then the knob 59 is rotated, the knob 59 drives the rotating rod 55 to rotate to drive the worm 57 to rotate, the transmission worm wheel 54 drives the MEMS mirror 53 to rotate until the wavelength of the optical fiber signal is adjusted to the required range, then the wavelength of the optical fiber signal is adjusted.

[0024] It is worth noting that the electric motor 58 disclosed in the above embodiment can be selected as OT-12GA, and the control switch group 8 is provided with a button corresponding to the electric motor 58 and controlling the switch of the electric motor 58.

[0025] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An adjustable optical fiber filter comprising a housing (1), a collimating mirror (6) is arranged on the right side of the bottom wall of the housing (1), characterized in that: Also include the adjusting mechanism (5); Adjusting mechanism (5): it includes sliding slot (51), sliding block (52), MEMS mirror (53), worm gear (54), rotating rod (55), keyway (56) and worm (57), the middle part of the bottom wall of the shell (1) is provided with sliding slot (51), the inside of sliding slot (51) is slidably connected with sliding block (52), the upper end of sliding block (52) is rotatably connected with MEMS mirror (53), the upper side of MEMS mirror (53) is fixedly provided with worm gear (54) on the outer surface of the shaft, rotating rod (55) is rotatably connected between the left and right side walls of shell (1), the outer surface of rotating rod (55) is provided with symmetrically distributed keyway (56), worm (57) is slidably connected between the two keyways (56) through key bar, worm (57) is meshed with worm gear (54).

2. The tunable fiber filter of claim 1, wherein: The front side of the shell (1) is provided with a control switch (8), and the input end of the control switch (8) is electrically connected with an external power supply.

3. A tunable fiber filter according to claim 2, characterized in that: The left and right side walls of the sliding slot (51) are rotatably connected with a lead screw (7), and the lead screw (7) is threadedly connected with the sliding block (52).

4. A tunable fiber filter according to claim 3, characterized in that: The adjusting mechanism (5) further comprises an electric motor (58), the electric motor (58) is arranged in the mounting groove on the left side of the bottom wall of the shell (1), the output shaft of the electric motor (58) is fixedly connected with the left side of the lead screw (7) through the circular hole in the left side wall of the sliding slot (51), and the input end of the electric motor (58) is electrically connected with the output end of the control switch (8).

5. The tunable fiber filter of claim 1, wherein: The adjusting mechanism (5) further comprises a knob (59), and the knob (59) is arranged on the left side of the rotating rod (55).

6. The tunable fiber filter of claim 1, wherein: The bottom of the shell (1) is provided with uniformly distributed mounting holes (2).

7. The tunable fiber filter of claim 1, wherein: The input optical fiber (3) is inserted into the first jack hole on the right side of the shell (1), and the output optical fiber (4) is inserted into the second jack hole on the left side of the shell (1).

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