CN218302079U

CN218302079U - Electromagnetic shielding device of high-density optical power meter

Info

Publication number: CN218302079U
Application number: CN202222607775.8U
Authority: CN
Inventors: 应冬冬; 陈学章; 王士忠
Original assignee: Shenzhen Wei Pai Creative Technology Ltd
Current assignee: Shenzhen Wei Pai Creative Technology Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-01-13
Anticipated expiration: 2032-09-30

Abstract

The utility model provides an electromagnetic shield device of high-density optical power meter belongs to electromagnetic shield technical field. The utility model discloses a can dismantle upper cover, pterygoid lamina subassembly and the bottom of connecting in proper order, the pterygoid lamina subassembly includes a plurality of solitary rectangle pterygoid lamina, and the side edge symmetry of pterygoid lamina is equipped with the wing limit, and the bottom is equipped with the wing groove with wing limit matched with, and the wing limit can be connected with wing groove block, and the upper cover can be dismantled with the bottom and be connected and constitute a closed cavity jointly with the wing limit, and the integrated analog circuit who is equipped with the optical power meter of pterygoid lamina. The utility model has the advantages that: on the basis of shielding of the case, interference signals in the case are further shielded, the influence of digital noise is further reduced through physical separation of the analog circuit and the digital circuit, good stability and linearity are still shown when signals of-100 dBm are measured, and due to the fact that separation and modularization of the analog circuit and the digital circuit are achieved, port density of the optical power meter is greatly improved.

Description

Electromagnetic shielding device of high-density optical power meter

Technical Field

The utility model relates to an electromagnetic shield technical field, concretely relates to electromagnetic shield device of high-density optical power meter.

Background

At present, in the research and development and production of optical communication, the measurement of optical power is a very important link, and the measurement of optical power runs through the whole process of the component level, the module level, the finished product level and the system level of the industry, so that the measurement of an optical power meter which is stable, reliable, high in sensitivity and simple and convenient to operate is particularly important. The dynamic range of optical power measurement is one of core indexes of an optical power meter, the upper limit of the optical power measurement generally depends on optical detector materials, the power upper limit of the same material is not greatly different, the lower limit of the optical power is related to the design of a manufacturer of the optical power meter, and the lower limit of the optical power and the measurement stability of the optical power are usually more concerned by a user; meanwhile, in recent years, due to the rapid development of broadband services, the number of channels and ports of an optical chip, an optical device, an optical module and an optical system is also rapidly increased, and the density of the measurement ports of the occupied space has a practical significance for reducing the operation cost for instrument users, while the number of ports of an optical power meter in the system is more important for a wavelength scanning system based on synchronous triggering, so the density of the ports of the optical power meter gradually becomes a characteristic of important attention of users.

The electromagnetic shielding of the traditional optical power meter mainly depends on the shielding effect of a case of the product, the shielding effect is limited, in addition, the electromagnetic interference in the case is not shielded, and the defects of measurement stability and linearity reduction of the measurement with the optical power lower than-60 dBm are shown; the engineering design of the traditional optical power meter does not fully consider the separation and modularization of an analog-digital circuit, the optical power port density is low, and the increasing port density requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the electromagnetic shield of traditional optical power meter and mainly lean on the shielding effect of product own quick-witted case, shielding effectiveness is limited, and does not play shielding effect to quick-witted incasement portion electromagnetic interference, is less than-60 dBm's measurement to optical power and shows measurement stability and linearity decline, and the engineering design of traditional optical power meter does not fully consider analog-to-digital circuit separation and modularization, and optical power port density hangs down the scheduling problem, the utility model provides an electromagnetic shield device of high-density optical power meter, simple structure, electromagnetic shield effect is good to realize analog-to-digital circuit separation, modularization, make this product optical power meter port density greatly increased.

The utility model discloses a realize above-mentioned purpose, specifically adopt following technical scheme:

the utility model provides an electromagnetic shield device of high-density optical power meter, is including dismantling upper cover, pterygoid lamina subassembly and the bottom of connecting in proper order, the pterygoid lamina subassembly includes a plurality of solitary rectangle pterygoid lamina, the side edge symmetry of pterygoid lamina is equipped with the wing limit, the bottom be equipped with wing limit matched with wing groove, the wing limit can with wing groove block is connected, the upper cover with the bottom can be dismantled connect and with the wing limit constitutes a closed cavity jointly, the integrated analog circuit who is equipped with the optical power meter of pterygoid lamina subassembly.

Furthermore, a plurality of winding displacement mouths are arranged at intervals on the upper cover, and the wing edges penetrate through the winding displacement mouths to be communicated with the outside through winding displacement and are communicated with the winding displacement mouths to be tightly matched with the winding displacement mouths.

Furthermore, a plurality of screw through holes are symmetrically formed in two sides of the upper cover, a plurality of threaded holes are symmetrically formed in two sides of the bottom cover, the threaded holes are matched with the screw through holes, and the screw through holes can be in bolted connection with the threaded holes through screws.

Furthermore, the upper cover is also provided with an upper cover groove for accommodating the wing plate assembly, and one surface of the wing plate assembly is clamped in the upper cover groove.

Further, the inside interval of bottom cover is equipped with a plurality of solitary optical detector grooves, optical detector can the block set up in the optical detector groove.

Furthermore, bosses which are distributed at intervals are arranged on two sides of the bottom cover, the bosses are adjacent to the wing grooves, and the bosses can be tightly sealed with the upper cover after the upper cover is connected with the bottom cover.

Furthermore, a plurality of panel threaded holes distributed at intervals are formed in the bottom cover, and the bottom cover can be in threaded connection with the panel through the panel threaded holes.

Furthermore, the electromagnetic shielding device of the high-density optical power meter is cuboid.

Compared with the prior art, the beneficial effects of the utility model are that:

the closed cavity formed by the upper cover, the two side wing edges and the bottom cover ensures that the shielding efficiency of the analog circuit part is further improved on the basis of chassis shielding, the wing plate assembly realizes the physical separation of the analog circuit and the digital circuit, further reduces the interference of the digital circuit noise to the analog circuit part, still shows good stability and linearity when measuring a signal of-100 dBm, simultaneously realizes modularization and greatly improves the port density of the optical power meter.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

Fig. 1 is an explosion effect diagram of an electromagnetic shielding device of a high-density optical power meter according to the present invention;

fig. 2 is a front view and a back view of an upper cover of the electromagnetic shielding device of the high-density optical power meter of the present invention;

fig. 3 is the front and back views of the bottom cover of the electromagnetic shielding device of the high-density optical power meter.

Reference numerals: 1-upper cover, 2-wing plate, 3-bottom cover, 4-wing edge, 5-wing groove, 6-wire arranging port, 7-screw through hole, 8-upper cover groove, 9-optical detector groove, 10-threaded hole, 11-boss and 12-panel threaded hole.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the present embodiment provides an electromagnetic shielding device for a high-density optical power meter, including an upper cover, a wing plate assembly and a bottom cover that are detachably connected in sequence, where the wing plate assembly includes a plurality of independent rectangular wing plates, wing edges are symmetrically disposed on side edges of the wing plates, the bottom cover is provided with wing grooves that are matched with the wing edges, the wing edges can be connected with the wing grooves in a snap-fit manner, the upper cover and the bottom cover are detachably connected and form a closed cavity together with the wing edges, so that shielding effectiveness of an analog circuit part is further improved on the basis of chassis shielding, the wing plate assembly integrates an analog circuit with the optical power meter, modularization is achieved, port density of the optical power meter can be improved, physical separation of the analog circuit and a digital circuit is achieved, and interference of digital circuit noise to the analog circuit part is further reduced.

As shown in fig. 2, the upper cover is provided with a plurality of wire arranging openings at intervals, the wing edges pass through the wire arranging openings through the wires to be communicated with the outside, and the communicating wires are tightly matched with the wire arranging openings, so that gaps of electromagnetic leakage are not reserved, and the shielding effect can be provided to the maximum extent.

As shown in fig. 2 and 3, a plurality of screw through holes are symmetrically formed in two sides of the upper cover, a plurality of threaded holes are symmetrically formed in two sides of the bottom cover, the threaded holes are matched with the screw through holes, and the screw through holes can be in bolted connection with the threaded holes through screws, so that the upper cover and the bottom cover are in close fit without electromagnetic leakage gaps, and the sealing performance of the electromagnetic shielding device of the high-density optical power meter is ensured.

As shown in fig. 2, the upper cover is further provided with an upper cover groove for accommodating the wing plate assembly, one surface of the wing plate assembly is clamped in the upper cover groove, and the upper cover groove and the wing plate assembly are matched to provide a layout space for an analog circuit of the optical power meter.

As shown in fig. 3, a plurality of individual photo detector slots are arranged inside the bottom cover at intervals, the photo detectors can be clamped in the photo detector slots, and meanwhile, the photo detector slots can also provide grounding of the photo detectors.

As shown in fig. 3, the bosses are arranged on two sides of the bottom cover at intervals, the bosses are adjacent to the wing grooves, and the bosses can be tightly sealed with the upper cover after the upper cover and the bottom cover are connected without an electromagnetic leakage gap, so that the tightness of the electromagnetic shielding device of the high-density optical power meter is ensured.

As shown in fig. 3, a plurality of panel threaded holes are arranged outside the bottom cover, and the bottom cover can be in threaded connection with the panel through the panel threaded holes to lock the bottom cover and the light detector on the same structural member.

As shown in fig. 1, the electromagnetic shield of the high-density optical power meter has a rectangular parallelepiped shape and is adapted to the shapes of the analog circuit and the photodetector.

According to the embodiment, the shielding effectiveness of the analog circuit part is further improved on the basis of chassis shielding through the closed cavity formed by the upper cover, the two side wing edges and the bottom cover, the physical separation of the analog circuit and the digital circuit is realized through the wing plate assembly, the interference of the digital circuit noise on the analog part is further reduced, good stability and linearity are still shown when a-100 dBm signal is measured, modularization is realized, and the port density of the optical power meter is greatly improved.

The above-mentioned embodiments are the preferred embodiments of the present invention, and the scope of the present invention is not limited to the above-mentioned embodiments, and the scope of the present invention includes and is not limited to the above-mentioned embodiments, and all equivalent changes made according to the present invention are within the protection scope of the present invention.

Claims

1. An electromagnetic shielding device of a high-density optical power meter is characterized in that: including upper cover (1), pterygoid lamina subassembly (2) and bottom (3) that can dismantle the connection in proper order, pterygoid lamina subassembly (2) are including a plurality of solitary rectangle pterygoid laminas, the side edge symmetry of pterygoid lamina is equipped with wing limit (4), bottom (3) be equipped with wing limit (4) matched with wing groove (5), wing limit (4) can with wing groove (5) block is connected, upper cover (1) with bottom (3) can dismantle the connection and with wing limit (4) constitute a closed cavity jointly, pterygoid lamina subassembly (2) integration is equipped with the analog circuit of optical power meter.

2. The electromagnetic shielding device for a high-density optical power meter according to claim 1, wherein: the upper cover (1) is provided with a plurality of wire arranging ports (6) at intervals, and the wing edges (4) penetrate through the wire arranging ports (6) to be communicated with the outside through wires and are communicated with the wires to be tightly matched with the wire arranging ports (6).

3. The electromagnetic shielding device for a high-density optical power meter according to claim 2, wherein: the upper cover (1) bilateral symmetry is equipped with a plurality of screw through-holes (7), bottom (3) bilateral symmetry is equipped with a plurality of screw hole (10), screw hole (10) with screw through-hole (7) looks adaptation, screw through-hole (7) can pass through the screw with screw hole (10) bolted connection.

4. The electromagnetic shielding device for a high-density optical power meter according to claim 3, wherein: the upper cover (1) is further provided with an upper cover groove (8) used for containing the wing plate assembly (2), and one surface of the wing plate assembly (2) is clamped in the upper cover groove (8).

5. The electromagnetic shielding device for a high-density optical power meter according to claim 4, wherein: bottom (3) inside interval is equipped with a plurality of solitary optical detector grooves (9), optical detector can the block set up in optical detector groove (9).

6. The electromagnetic shielding device for a high-density optical power meter according to claim 5, wherein: bosses (11) distributed at intervals are arranged on two sides of the bottom cover (3), the bosses (11) are adjacent to the wing grooves (5), and the bosses (11) can be tightly closed with the upper cover (1) after the upper cover (1) is connected with the bottom cover (3).

7. The electromagnetic shielding device for a high-density optical power meter according to claim 6, wherein: the bottom cover (3) is also externally provided with a plurality of panel threaded holes (12) distributed at intervals, and the bottom cover (3) can be in threaded connection with the panel through the panel threaded holes (12).

8. The electromagnetic shielding device for a high-density optical power meter according to claim 7, wherein: the electromagnetic shielding device of the high-density optical power meter is cuboid.