CN111221079A - Integrated chip type optical fixed attenuator with multiple attenuation values - Google Patents
Integrated chip type optical fixed attenuator with multiple attenuation values Download PDFInfo
- Publication number
- CN111221079A CN111221079A CN202010155007.6A CN202010155007A CN111221079A CN 111221079 A CN111221079 A CN 111221079A CN 202010155007 A CN202010155007 A CN 202010155007A CN 111221079 A CN111221079 A CN 111221079A
- Authority
- CN
- China
- Prior art keywords
- convex lens
- light
- attenuation control
- attenuation
- control module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 57
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000005253 cladding Methods 0.000 claims description 21
- 239000013307 optical fiber Substances 0.000 claims description 16
- 239000012792 core layer Substances 0.000 claims description 15
- 239000010410 layer Substances 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims description 2
- 238000013016 damping Methods 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
- G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Mechanical Light Control Or Optical Switches (AREA)
Abstract
The invention relates to the technical field of optical attenuators and discloses an integrated chip type optical fixed attenuator with multiple attenuation values. A plurality of attenuation values can be provided at the same time, each attenuation value can be the same or different, and the intensity of the sub-output light corresponding to each attenuation value can be controlled by the attenuation control module at the previous stage. The integrated chip type optical fixed attenuator with multiple attenuation values comprises a front-stage attenuation control module, a middle-stage attenuation control module, a rear-stage attenuation control module and two telescopic mechanisms; the front stage attenuation control module comprises a first light guide body, a first convex lens is integrally connected to the right end of the first light guide body, a second convex lens is arranged right opposite to the first convex lens, and the left focus of the second convex lens is located at the right focus of the first convex lens; a third convex lens is arranged right opposite to the second convex lens, and a second light guide body is integrally connected to the right end face of the third convex lens.
Description
Technical Field
The invention relates to the technical field of optical attenuators, in particular to an integrated chip type optical fixed attenuator with multiple attenuation values.
Background
An optical attenuator, which is one of the essential passive devices in an optical communication system and which can desirably attenuate optical signal energy according to a user's request, is widely used in telecommunication networks, optical fiber test equipment, Local Area Networks (LANs), and cable television (CATV) systems. The optical attenuator can be divided into an optical fixed attenuator and an optical continuously variable attenuator.
Current optical fixed attenuators typically provide only one attenuation value and are not capable of providing multiple attenuation values simultaneously.
Disclosure of Invention
The invention aims to solve the defect that the existing optical fixed attenuator can only provide one attenuation value but cannot simultaneously provide a plurality of attenuation values, and provides an integrated chip type optical fixed attenuator which can simultaneously provide a plurality of attenuation values, each attenuation value can be the same or different, the intensity of the sub-output light corresponding to each attenuation value can be controlled by a preceding stage attenuation control module, and the integrated chip type optical fixed attenuator has various use flexibility and good reliability and has a plurality of attenuation values.
In order to achieve the purpose, the invention adopts the following technical scheme:
the integrated chip type optical fixed attenuator with multiple attenuation values comprises a front-stage attenuation control module, a middle-stage attenuation control module, a rear-stage attenuation control module and two telescopic mechanisms;
the front stage attenuation control module comprises a first light guide body, a first convex lens is integrally connected to the right end of the first light guide body, a second convex lens is arranged right opposite to the first convex lens, and the left focus of the second convex lens is located at the right focus of the first convex lens; a third convex lens is arranged right opposite to the right side of the second convex lens, and a second light guide body is integrally connected to the right end face of the third convex lens; the central line of the first light guide body, the central line of the first convex lens, the central line of the second convex lens, the central line of the third convex lens and the central line of the second light guide body are all on the same horizontal straight line; thereby forming a first-order attenuation control region in the light transmission region between the second convex lens and the third convex lens; the first telescopic mechanism of the two telescopic mechanisms is arranged above the side of the primary attenuation control area, and a telescopic rod of the first telescopic mechanism is arranged vertically downwards; a first reflector with a reflecting surface facing the second convex lens is arranged on the telescopic rod of the first telescopic mechanism, and the included angle between the central line of the second convex lens and the reflecting surface of the first reflector is 45 degrees; the light energy entering the primary attenuation control area from the second convex lens is reflected to the lower side of the primary attenuation control area under the reflection action of the first reflecting plate; light entering the primary attenuation control area from the second convex lens and not shielded by the first reflecting plate can directly irradiate the third convex lens;
the middle-stage attenuation control module comprises a fixed attenuation waveguide light path comprising a total input light path and N sub-output light paths, wherein N is a natural number greater than 1; the left end of the main input light path is integrally connected to the right end of the second light guide body; the N sub-output optical paths correspond to N sub-output ports, and each sub-output port is arranged in a right-facing manner; the central line of each branch output port is parallel to the horizontal plane; the N sub-output ports are vertically arranged at intervals from top to bottom;
the rear-stage attenuation control module comprises N opposite light splitting receivers and a first side opposite light splitting receiver; the N opposite light splitting receivers are arranged right to each light splitting output port in one-to-one opposite mode; thereby forming a secondary attenuation control region in the optical transmission region between the branch output port and the input port facing the spectral receiver; the second telescopic mechanism of the two telescopic mechanisms is arranged above the side of the secondary attenuation control area, and a telescopic rod of the second telescopic mechanism is arranged vertically downwards; a second reflecting plate with a reflecting surface arranged towards the sub-output port of the sub-output light path is arranged on the telescopic rod of the second telescopic mechanism, and the included angle between the central line of the sub-output port and the reflecting surface of the second reflecting plate is 45 degrees; the first pair of light splitting receivers is arranged below the side of the secondary attenuation control area;
the first split optical receiver and each opposite split optical receiver respectively and independently comprise a condensing convex lens, a third light guide body and an optical fiber connector; each condensing convex lens is integrally connected to one end of the corresponding third light guide body, and the other end of each third light guide body is integrally connected to one end of the corresponding optical fiber connector;
each path of light entering the secondary attenuation control area from the branch output port can be reflected to the first condensing convex lens corresponding to the split light receiver after being reflected by the second reflecting plate; each path of light entering the secondary attenuation control area from the branch output port and not shielded by the second reflecting plate can directly irradiate the corresponding condensing convex lens opposite to the light splitting receiver.
When the light guide device is used, light sequentially passes through a first light guide body, a first convex lens, a second convex lens, a first-stage attenuation control area, a second convex lens and a second light guide body of the front-stage attenuation control module and then enters a main input light path of the middle-stage attenuation control module, and then passes through N sub-output light paths of the middle-stage attenuation control module to be subjected to attenuation and light splitting, and then is output from sub-output ports corresponding to the sub-output light paths and then enters a second-stage attenuation control area of the rear-stage attenuation control module; each beam of light entering the secondary attenuation control area is directly transmitted to the light-gathering convex lens of the light-splitting receiver opposite to the beam of light, then enters the corresponding optical fiber connector after passing through the corresponding third light guide body; or after being reflected by the second reflecting plate, the light irradiates the condensing convex lens of the side-split light receiver, then enters the corresponding optical fiber connector after passing through the corresponding third light guide body;
the first light screen can control the input proportion of light in the first-level attenuation control area entering the third convex lens under the control of the first telescopic mechanism. When the first light shading plate does not enter the first-level attenuation control area, the input proportion of light in the first-level attenuation control area entering the third convex lens is equal to 1; when the first light shielding plate enters the first-level attenuation control area, the input proportion of light in the first-level attenuation control area entering the third convex lens is smaller than 1. The proportion of the quantity of light entering the medium-level attenuation control module can be controlled through the first light shielding plate, so that the variable attenuation condition of the light output from each branch output port is controlled, and the variable attenuation condition of the light in the optical fiber connector corresponding to the optical splitter receiver is controlled through the first light shielding plate.
The second light shielding plate can also control the variable attenuation condition of light entering the condensing convex lens of the side splitting receiver from each light beam in the secondary attenuation control area under the control of the second telescopic mechanism, and thus the second light shielding plate also controls the variable attenuation condition of light in the optical fiber connector corresponding to the side splitting receiver.
In the scheme, light entering the primary attenuation control area from the second convex lens is parallel light, and the parallel light reflected by the first reflecting plate is vertically reflected downwards to form the primary attenuation control area.
The light in the secondary attenuation control area is also parallel light, and the parallel light reflected by the second reflecting plate is vertically reflected downwards to a condensing convex lens of the light splitting receiver.
The medium-level attenuation control module is similar to a light splitting optical path with a total input port and a plurality of branch output ports, each branch output port can output light with the same or different light attenuation values, and when the plurality of branch output ports carry out light attenuation, one light beam can be split into a plurality of outputs in the medium-level attenuation control module. The scheme not only enables the optical fixed attenuator to have multiple attenuation values, but also enables the multiple attenuation values of the optical fixed attenuator to be variable. The light output by each sub-output port in the same time section may be equal or unequal.
The scheme can provide a plurality of attenuation values at the same time, each attenuation value can be the same or different, the intensity of the sub-output light corresponding to each attenuation value can be controlled by the preceding stage attenuation control module, the use flexibility is various, and the reliability is good.
Preferably, the rear-stage attenuation control module further comprises a second split optical receiver arranged below the side of the first-stage attenuation control area, and the structure of the second split optical receiver is the same as that of the first split optical receiver; the light entering the primary attenuation control area from the second convex lens can be reflected to the second condensing convex lens corresponding to the light splitting receiver after being reflected by the first reflecting plate.
And the second light splitting receiver can receive the light reflected by the first light reflecting plate and convert the light into one path or multiple paths of light to be output, so that the use flexibility is improved.
Preferably, the middle-stage attenuation control module further comprises a substrate, a lower cladding layer, a core layer and an upper cladding layer, the lower cladding layer is arranged on the upper surface of the substrate, the core layer is arranged in the lower cladding layer, the upper cladding layer is arranged on the lower cladding layer, the lower surface of the core layer falls on the upper surface of the substrate layer, and the upper surface of the core layer falls on the lower surface of the upper cladding layer; the core layer is provided with a fixed attenuation waveguide light path consisting of a main input light path and N sub-output light paths; thereby forming an intermediate attenuation control module.
The fixed attenuated waveguide light path manufactured in this way has a fixed splitting ratio, and when the light entering the total input port is constant, the light exits from each of the branch output ports, that is, the light exits from each of the branch output ports, so that the reliability is high.
Preferably, the telescopic mechanism comprises a vertical pipe, a top ring is fixedly arranged in a lower pipe opening of the vertical pipe, a T-shaped pressure rod is arranged in the vertical pipe in a sliding mode up and down, the lower end of the pressure rod is arranged in a hole of the top ring in a sliding mode, an extrusion spring is arranged in the vertical pipe between a pressure head of the pressure rod and the fixed ring, and an internal thread is arranged on the inner pipe wall of the vertical pipe; an adjusting screw is spirally arranged in the vertical pipe above the pressure head of the pressure rod; the first reflecting plate and the second reflecting plate are respectively and fixedly connected to the lower ends of the pressing rods on the corresponding telescopic mechanisms.
The upper part and the lower part of the first reflecting plate or the second reflecting plate can be controlled to be fixed by screwing in and out the adjusting screw, so that the use is convenient and simple, and the reliability is high.
Preferably, a groove is formed in the upper surface of the ram, a ball is disposed in the groove, and the front end surface of the adjusting screw is pressed against the ball. The ball cooperation makes the condition good in reliability.
Preferably, telescopic machanism includes two cylinders, and the telescopic link of two cylinders sets up respectively in the side top in first-level attenuation control district and second grade attenuation control district downwards, and the telescopic link of two cylinders is connected respectively to reflector panel and No. two reflector panels on. The cylinder type telescopic mechanism has simple structure and convenient use.
The invention can achieve the following effects:
the integrated chip type optical fixed attenuator can provide a plurality of attenuation values at the same time, each attenuation value can be the same or different, the intensity of the sub-output light corresponding to each attenuation value can be controlled by the attenuation control module at the front stage, and the integrated chip type optical fixed attenuator has the advantages of multiple use flexibility and good reliability.
Drawings
Fig. 1 is a schematic view of a connection structure in a use state in which a first reflection plate does not yet enter a first-stage attenuation control region and a second reflection plate does not yet enter a second-stage attenuation control region in embodiment 1 of the present invention.
Fig. 2 is a schematic view of a connection structure in a use state in which the first reflection plate has not entered the first-stage attenuation control region, and the second reflection plate has entered the second-stage attenuation control region and reflected light output from a sub-transmission port to a convex condenser lens of the first-side dichroic receiver in embodiment 1 of the present invention.
Fig. 3 is a schematic view of a connection structure in a use state in which the first reflection plate has entered the first-stage attenuation control region and reflected a part of light in the first-stage attenuation control region to the lower side in the first-stage attenuation control region, and the second reflection plate has entered the second-stage attenuation control region and reflected light output from a sub-transmission port to a condensing convex lens of the first-side dichroic receiver in embodiment 1 of the present invention.
Fig. 4 is a schematic view of a connection structure of the telescopic mechanism according to the embodiment of the present invention.
Fig. 5 is a schematic view of a connection structure of a use state in which the first reflection plate enters the first-stage attenuation control region and reflects a part of light in the first-stage attenuation control region to the convex condenser lens of the second-side opposite-direction light-splitting receiver, and the second reflection plate enters the second-stage attenuation control region and reflects light output from the three transmission ports to the convex condenser lens of the first-side opposite-direction light-splitting receiver in embodiment 2 of the present invention.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1: an integrated chip type optical fixed attenuator with multiple attenuation values. Referring to fig. 1-4, the damping mechanism comprises a front-stage damping control module 13, a middle-stage damping control module 8, a rear-stage damping control module 11 and two telescopic mechanisms 21;
the front stage attenuation control module comprises a first light guide body 1, a first convex lens 2 is integrally connected to the right end of the first light guide body, a second convex lens 3 is arranged right opposite to the first convex lens, and the left focus of the second convex lens is located at the right focus of the first convex lens; a third convex lens 5 is arranged right opposite to the right side of the second convex lens, and a second light guide body 6 is integrally connected to the right end face of the third convex lens; the central line of the first light guide body, the central line of the first convex lens, the central line of the second convex lens, the central line of the third convex lens and the central line of the second light guide body are all on the same horizontal straight line; thereby forming a primary attenuation control region 33 in the light transmission region between the second convex lens and the third convex lens; the first of the two telescoping mechanisms is arranged above the side of the primary attenuation control area, and the telescoping rod of the first telescoping mechanism 20 is arranged vertically downwards; a first reflector 4 with a reflecting surface facing the second convex lens is arranged on the telescopic rod of the first telescopic mechanism, and the included angle between the central line of the second convex lens and the reflecting surface of the first reflector is 45 degrees; the light energy entering the primary attenuation control area from the second convex lens is reflected to the lower side of the primary attenuation control area under the reflection action of the first reflecting plate; light entering the primary attenuation control area from the second convex lens and not shielded by the first reflecting plate can directly irradiate the third convex lens;
the middle-stage attenuation control module comprises a fixed attenuation waveguide light path 35 which comprises a total input light path 7 and N sub-output light paths 9, wherein N is a natural number more than 1; the left end of the main input light path is integrally connected to the right end of the second light guide body; the N sub-output optical paths correspond to the N sub-output ports 10, and each sub-output port is arranged in a manner of facing right horizontally; the central line of each branch output port is parallel to the horizontal plane; the N sub-output ports are vertically arranged at intervals from top to bottom;
the rear-stage attenuation control module comprises N opposite light splitting receivers 12 and a first side opposite light splitting receiver 15; the N opposite light splitting receivers are arranged right to each light splitting output port in one-to-one opposite mode; thereby forming a secondary attenuation control region 34 in the region of optical transmission between the drop output port and the input port facing the drop receiver; the second telescoping mechanism 22 of the two telescoping mechanisms is arranged above the side of the secondary attenuation control area, and the telescoping rod of the second telescoping mechanism is arranged vertically downwards; a second reflecting plate 35 with a reflecting surface facing the sub-output port of the sub-output light path is arranged on the telescopic rod of the second telescopic mechanism, and the included angle between the central line of the sub-output port and the reflecting surface of the second reflecting plate is 45 degrees; the first pair of light splitting receivers is arranged below the side of the secondary attenuation control area;
the first split optical receiver and each opposite split optical receiver respectively and independently comprise a condensing convex lens 16, a third light guide body 17 and an optical fiber connector 18; each condensing convex lens is integrally connected to one end of the corresponding third light guide body, and the other end of each third light guide body is integrally connected to one end of the corresponding optical fiber connector;
each path of light entering the secondary attenuation control area from the branch output port can be reflected to the first condensing convex lens corresponding to the split light receiver after being reflected by the second reflecting plate; each path of light entering the secondary attenuation control area from the branch output port and not shielded by the second reflecting plate can directly irradiate the corresponding condensing convex lens opposite to the light splitting receiver.
The middle-level attenuation control module also comprises a substrate, a lower cladding, a core layer and an upper cladding, wherein the lower cladding is arranged on the upper surface of the substrate, the core layer is arranged in the lower cladding, the upper cladding is arranged on the lower cladding, the lower surface of the core layer falls on the upper surface of the substrate, and the upper surface of the core layer falls on the lower surface of the upper cladding; the core layer is provided with a fixed attenuation waveguide light path consisting of a main input light path and N sub-output light paths; thereby forming an intermediate attenuation control module.
A telescopic mechanism has the structure that the telescopic mechanism comprises a vertical pipe 25, a top ring 29 is fixedly arranged in a lower pipe opening of the vertical pipe, a T-shaped pressure rod 32 is arranged in the vertical pipe in a sliding mode up and down, the lower end of the pressure rod is arranged in a hole 30 of the top ring in a sliding mode, an extrusion spring 28 is arranged in the vertical pipe between a pressure head 31 of the pressure rod and a fixed ring, and internal threads are arranged on the inner pipe wall of the vertical pipe; an adjusting screw 24 is spirally arranged in the vertical pipe above the pressure head of the pressure lever; the first reflecting plate and the second reflecting plate are respectively and fixedly connected to the lower ends of the pressing rods on the corresponding telescopic mechanisms.
A groove 27 is provided in the upper surface of the ram, in which groove a ball 26 is provided, on which the front end face of the adjusting screw is pressed.
The other type of telescopic mechanism is structurally characterized in that the telescopic mechanism comprises two cylinders, telescopic rods of the two cylinders are downwards arranged above the side of the first-level attenuation control area and the side of the second-level attenuation control area respectively, and the first reflecting plate and the second reflecting plate are connected to the telescopic rods of the two cylinders respectively. The cylinder is not shown in the drawings.
The front attenuation control module, the middle attenuation control module, the rear attenuation control module and the vertical tubes of the two telescopic mechanisms are all sealed in a light shielding box 19, and box holes (not shown in the attached drawing) are respectively arranged on the light shielding box at the position corresponding to the adjusting screw of the telescopic mechanism, the light shielding box at the position corresponding to the first light guide body and the light shielding box at the position corresponding to each optical fiber connector. Therefore, light transmitted in the shading box is not easily interfered by the outside, and the reliability is high.
The upper part and the lower part of the first reflecting plate or the second reflecting plate can be controlled to be fixed by screwing in and out the adjusting screw, so that the use is convenient and simple, and the reliability is high.
The fixed attenuated waveguide light path has a fixed light splitting ratio, and the light entering the total input port is constant under the condition that the light exits from each branch output port, so that the reliability is high.
When the light guide device is used, light 14 sequentially passes through a first light guide body, a first convex lens, a second convex lens, a first-stage attenuation control area, a second convex lens and a second light guide body of a front-stage attenuation control module, then enters a main input light path of a middle-stage attenuation control module, then passes through N sub-output light paths of the middle-stage attenuation control module to be subjected to attenuation and light splitting, and then is output from sub-output ports corresponding to the sub-output light paths and then enters a second-stage attenuation control area of a rear-stage attenuation control module; each beam of light entering the secondary attenuation control area is directly transmitted to the light-gathering convex lens of the light-splitting receiver opposite to the beam of light, then enters the corresponding optical fiber connector after passing through the corresponding third light guide body; or after being reflected by the second reflecting plate, the light irradiates the condensing convex lens of the side-split light receiver, then enters the corresponding optical fiber connector after passing through the corresponding third light guide body;
the first light screen can control the input proportion of light in the first-level attenuation control area entering the third convex lens under the control of the first telescopic mechanism. When the first light shading plate does not enter the first-level attenuation control area, the input proportion of light in the first-level attenuation control area entering the third convex lens is equal to 1; when the first light shielding plate enters the first-level attenuation control area, the input proportion of light in the first-level attenuation control area entering the third convex lens is smaller than 1. The proportion of the quantity of light entering the medium-level attenuation control module can be controlled through the first light shielding plate, so that the variable attenuation condition of the light output from each branch output port is controlled, and the variable attenuation condition of the light in the optical fiber connector corresponding to the optical splitter receiver is controlled through the first light shielding plate.
The second light shielding plate can also control the variable attenuation condition of light entering the condensing convex lens of the side splitting receiver from each light beam in the secondary attenuation control area under the control of the second telescopic mechanism, and thus the second light shielding plate also controls the variable attenuation condition of light in the optical fiber connector corresponding to the side splitting receiver.
In this embodiment, light entering the primary attenuation control area from the second convex lens is parallel light, and the parallel light reflected by the first reflective plate is vertically reflected downward to exit the primary attenuation control area.
The light in the secondary attenuation control area is also parallel light, and the parallel light reflected by the second reflecting plate is vertically reflected downwards to a condensing convex lens of the light splitting receiver.
The medium-level attenuation control module is similar to a light splitting optical path with a total input port and a plurality of branch output ports, each branch output port can output light with the same or different light attenuation values, and when the plurality of branch output ports carry out light attenuation, one light beam can be split into a plurality of outputs in the medium-level attenuation control module. The present embodiment not only allows the optical fixed attenuator to have multiple attenuation values, but also allows the multiple attenuation values of the optical fixed attenuator to be variable. The light output by each sub-output port in the same time section may be equal or unequal.
The embodiment can provide a plurality of attenuation values at the same time, each attenuation value can be the same or different, and the intensity of the sub-output light corresponding to each attenuation value can be controlled by the attenuation control module at the previous stage, so that the use flexibility is various, and the reliability is good.
Example 2, as shown in fig. 5, example 2 is added with the following structure on the basis of example 1.
The rear-stage attenuation control module also comprises a second split optical receiver 23 arranged below the side of the first-stage attenuation control area, and the structure of the second split optical receiver is the same as that of the first split optical receiver; the light entering the primary attenuation control area from the second convex lens can be reflected to the second condensing convex lens corresponding to the light splitting receiver after being reflected by the first reflecting plate.
The second is to the light receiver can receive the light that the reflector panel reflects and change it into one or multichannel optical output, has increased a light outlet, has improved the flexibility of using.
Claims (6)
1. The integrated chip type optical fixed attenuator with multiple attenuation values is characterized by comprising a front-stage attenuation control module, a middle-stage attenuation control module, a rear-stage attenuation control module and two telescopic mechanisms;
the front stage attenuation control module comprises a first light guide body, a first convex lens is integrally connected to the right end of the first light guide body, a second convex lens is arranged right opposite to the first convex lens, and the left focus of the second convex lens is located at the right focus of the first convex lens; a third convex lens is arranged right opposite to the right side of the second convex lens, and a second light guide body is integrally connected to the right end face of the third convex lens; the central line of the first light guide body, the central line of the first convex lens, the central line of the second convex lens, the central line of the third convex lens and the central line of the second light guide body are all on the same horizontal straight line; thereby forming a first-order attenuation control region in the light transmission region between the second convex lens and the third convex lens; the first telescopic mechanism of the two telescopic mechanisms is arranged above the side of the primary attenuation control area, and a telescopic rod of the first telescopic mechanism is arranged vertically downwards; a first reflector with a reflecting surface facing the second convex lens is arranged on the telescopic rod of the first telescopic mechanism, and the included angle between the central line of the second convex lens and the reflecting surface of the first reflector is 45 degrees; the light energy entering the primary attenuation control area from the second convex lens is reflected to the lower side of the primary attenuation control area under the reflection action of the first reflecting plate; light entering the primary attenuation control area from the second convex lens and not shielded by the first reflecting plate can directly irradiate the third convex lens;
the middle-stage attenuation control module comprises a fixed attenuation waveguide light path comprising a total input light path and N sub-output light paths, wherein N is a natural number greater than 1; the left end of the main input light path is integrally connected to the right end of the second light guide body; the N sub-output optical paths correspond to N sub-output ports, and each sub-output port is arranged in a right-facing manner; the central line of each branch output port is parallel to the horizontal plane; the N sub-output ports are vertically arranged at intervals from top to bottom;
the rear-stage attenuation control module comprises N opposite light splitting receivers and a first side opposite light splitting receiver; the N opposite light splitting receivers are arranged right to each light splitting output port in one-to-one opposite mode; thereby forming a secondary attenuation control region in the optical transmission region between the branch output port and the input port facing the spectral receiver; the second telescopic mechanism of the two telescopic mechanisms is arranged above the side of the secondary attenuation control area, and a telescopic rod of the second telescopic mechanism is arranged vertically downwards; a second reflecting plate with a reflecting surface arranged towards the sub-output port of the sub-output light path is arranged on the telescopic rod of the second telescopic mechanism, and the included angle between the central line of the sub-output port and the reflecting surface of the second reflecting plate is 45 degrees; the first pair of light splitting receivers is arranged below the side of the secondary attenuation control area;
the first split optical receiver and each opposite split optical receiver respectively and independently comprise a condensing convex lens, a third light guide body and an optical fiber connector; each condensing convex lens is integrally connected to one end of the corresponding third light guide body, and the other end of each third light guide body is integrally connected to one end of the corresponding optical fiber connector;
each path of light entering the secondary attenuation control area from the branch output port can be reflected to the first condensing convex lens corresponding to the split light receiver after being reflected by the second reflecting plate; each path of light entering the secondary attenuation control area from the branch output port and not shielded by the second reflecting plate can directly irradiate the corresponding condensing convex lens opposite to the light splitting receiver.
2. The multiple attenuation value integrated chip type optical fixed attenuator of claim 1, wherein the attenuation control module of the subsequent stage further comprises a second pair of optical receivers arranged below the first stage of attenuation control region, the second pair of optical receivers having the same structure as the first pair of optical receivers; the light entering the primary attenuation control area from the second convex lens can be reflected to the second condensing convex lens corresponding to the light splitting receiver after being reflected by the first reflecting plate.
3. The multi-attenuation-value integrated chip-based optical fixed attenuator of claim 1, wherein the intermediate-level attenuation control module further comprises a substrate, a lower cladding layer, a core layer, and an upper cladding layer, the lower cladding layer being disposed on an upper surface of the substrate, the core layer being disposed within the lower cladding layer, the upper cladding layer being disposed on the lower cladding layer, and a lower surface of the core layer falling on an upper surface of the substrate, and an upper surface of the core layer falling on a lower surface of the upper cladding layer; the core layer is provided with a fixed attenuation waveguide light path consisting of a main input light path and N sub-output light paths; thereby forming an intermediate attenuation control module.
4. The multi-attenuation-value integrated chip type optical fixed attenuator of claim 1, wherein the telescopic mechanism comprises a vertical tube, a top ring is fixedly arranged in a lower pipe opening of the vertical tube, a pressing rod in a T shape is arranged in the vertical tube in a sliding manner up and down, the lower end of the pressing rod is arranged in a hole of the top ring in a sliding manner, an extrusion spring is arranged in the vertical tube between a pressing head and a fixed ring of the pressing rod, and an internal thread is arranged on the inner pipe wall of the vertical tube; an adjusting screw is spirally arranged in the vertical pipe above the pressure head of the pressure rod; the first reflecting plate and the second reflecting plate are respectively and fixedly connected to the lower ends of the pressing rods on the corresponding telescopic mechanisms.
5. The multi-attenuation-value integrated chip type optical fixed attenuator of claim 4, wherein a groove is formed on the upper surface of the indenter, a ball is disposed in the groove, and the front end surface of the adjusting screw presses on the ball.
6. The integrated chip type optical fixed attenuator with multiple attenuation values according to claim 1, wherein the retractable mechanism comprises two cylinders, the retractable rods of the two cylinders are disposed downward and above the first-stage attenuation control region and the second-stage attenuation control region, respectively, and the first reflective plate and the second reflective plate are connected to the retractable rods of the two cylinders, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155007.6A CN111221079B (en) | 2020-03-06 | 2020-03-06 | Integrated chip type optical fixed attenuator with multiple attenuation values |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155007.6A CN111221079B (en) | 2020-03-06 | 2020-03-06 | Integrated chip type optical fixed attenuator with multiple attenuation values |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111221079A true CN111221079A (en) | 2020-06-02 |
| CN111221079B CN111221079B (en) | 2024-06-04 |
Family
ID=70827333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010155007.6A Active CN111221079B (en) | 2020-03-06 | 2020-03-06 | Integrated chip type optical fixed attenuator with multiple attenuation values |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111221079B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005055554A (en) * | 2003-08-08 | 2005-03-03 | Fdk Corp | Variable optical attenuator module |
| EP1887384A1 (en) * | 2006-08-08 | 2008-02-13 | Kabushiki Kaisha TOPCON | Variable optical attenuator and ranging apparatus using the same |
| CN104238107A (en) * | 2014-07-07 | 2014-12-24 | 中国科学院上海光学精密机械研究所 | Digitalized variable optical attenuator |
| US20170168243A1 (en) * | 2015-12-15 | 2017-06-15 | Browave Corporation | Variable optical attenuator |
| CN206990852U (en) * | 2017-04-27 | 2018-02-09 | 上海中科创欣通讯设备有限公司 | The adjustable attenuator that integral type monitors in real time |
| CN107994884A (en) * | 2018-01-11 | 2018-05-04 | 广东工业大学 | A kind of numerical-control attenuator with high heat dispersion |
| CN109273812A (en) * | 2018-08-30 | 2019-01-25 | 陈亮 | A kind of miniaturization programmable step attenuator |
-
2020
- 2020-03-06 CN CN202010155007.6A patent/CN111221079B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005055554A (en) * | 2003-08-08 | 2005-03-03 | Fdk Corp | Variable optical attenuator module |
| EP1887384A1 (en) * | 2006-08-08 | 2008-02-13 | Kabushiki Kaisha TOPCON | Variable optical attenuator and ranging apparatus using the same |
| CN104238107A (en) * | 2014-07-07 | 2014-12-24 | 中国科学院上海光学精密机械研究所 | Digitalized variable optical attenuator |
| US20170168243A1 (en) * | 2015-12-15 | 2017-06-15 | Browave Corporation | Variable optical attenuator |
| CN206990852U (en) * | 2017-04-27 | 2018-02-09 | 上海中科创欣通讯设备有限公司 | The adjustable attenuator that integral type monitors in real time |
| CN107994884A (en) * | 2018-01-11 | 2018-05-04 | 广东工业大学 | A kind of numerical-control attenuator with high heat dispersion |
| CN109273812A (en) * | 2018-08-30 | 2019-01-25 | 陈亮 | A kind of miniaturization programmable step attenuator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111221079B (en) | 2024-06-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101655607B (en) | Optical system | |
| CN109387226B (en) | Star simulator system | |
| CN103558667B (en) | A kind of multicast Switched Optical switch based on free space transmission | |
| DE3925128A1 (en) | OPTOELECTRIC TRANSMITTER AND RECEIVER | |
| CN203745693U (en) | Optical assembly with OTDR function | |
| CN211653210U (en) | Integrated chip type optical fixed attenuator with multiple attenuation values | |
| CN111221079A (en) | Integrated chip type optical fixed attenuator with multiple attenuation values | |
| US4633711A (en) | Local display technique for fiber optic illuminator/hood system | |
| CN105676377B (en) | A kind of multidirectional optical assembly and the method for obtaining multidirectional light | |
| CN209514126U (en) | Multispectral channel image transmission optical fibre beam system | |
| US9548810B2 (en) | Optical path processing method and apparatus | |
| CN102937734B (en) | There is the optical network unit three-dimensional optical assembly of optical time domain signal reflex function | |
| CN103323923A (en) | Optical assembly for OLT and with function of conducting double-trouble-diagnosing | |
| CN102447511A (en) | Light path tester | |
| CN103905119A (en) | Visible light communication receiving device | |
| CN208765668U (en) | A kind of fiber position detection system | |
| CN206178193U (en) | Double -diaphragm wavelength division multiplexer | |
| CN208721249U (en) | A kind of optic probe | |
| CN206402230U (en) | Optical assembly, the detecting devices using the optical assembly | |
| CN105929483B (en) | It is a kind of list beam can image transmission optical fibre system and its application | |
| CN206363000U (en) | Miniaturized long-focus large-caliber continuous zooming optical structure | |
| CN203883841U (en) | Dual-wavelength simultaneous test insertion loss and return loss tester | |
| Takahata et al. | Compact monitor device for multicore fibre with practically low loss using multiple lenses | |
| CN202995073U (en) | Light gathering apparatus | |
| CN216210041U (en) | 2x2 optical switch with simple optical path |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240508 Address after: 315100 Urban Industrial Park, Shounan Street, Yinzhou District, Ningbo City, Zhejiang Province Applicant after: Ningbo Zhaoming Semiconductor Co.,Ltd. Country or region after: China Address before: Unit 06-2, 3A / F, building 23, 388 Xinping street, Suzhou Industrial Park, 215000, Jiangsu Province Applicant before: JIANGSU GULF SEMICONDUCTOR TECHNOLOGY Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |