CN114978301B - Optical test system, calibration method thereof and calibration piece - Google Patents
Optical test system, calibration method thereof and calibration piece Download PDFInfo
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- CN114978301B CN114978301B CN202210311600.4A CN202210311600A CN114978301B CN 114978301 B CN114978301 B CN 114978301B CN 202210311600 A CN202210311600 A CN 202210311600A CN 114978301 B CN114978301 B CN 114978301B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
- H04B10/077—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using a supervisory or additional signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
- H04B10/071—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using a reflected signal, e.g. using optical time domain reflectometers [OTDR]
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- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention discloses an optical test system, a calibration method and a calibration piece thereof, wherein the calibration method comprises the following steps: the outgoing photon system emits a beam to a detection subsystem, which acquires the near field coordinates (X 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the photonic system so that X 1 ＝X 2 ，Y 1 ＝Y 2 The method comprises the steps of carrying out a first treatment on the surface of the Placing the calibration piece on the reference table and in the optical path, the light beam passing through the calibration piece; acquiring the coordinates of the beam before the calibration part is placed (X 3 ,Y 3 ) And post-placement beam coordinates (X 4 ,Y 4 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference stage to X 3 ＝X 4 ，Y 3 ＝Y 4 The method comprises the steps of carrying out a first treatment on the surface of the The calibration member is adjusted to obtain the coordinates (X) 5 ,Y 5 ) The method comprises the steps of carrying out a first treatment on the surface of the The calibration member is adjusted so that the light beam is reflected by the calibration member and then is emitted to the detection subsystem, and the coordinates (X) 6 ,Y 6 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference table to make Y 5 ＝Y 6 The method comprises the steps of carrying out a first treatment on the surface of the Placing an optical fiber standard on a reference table, and enabling a light beam to pass through the optical fiber standard and then to be emitted to a detection subsystem to obtain a light beam coordinate (X) 7 ,Y 7 ) The method comprises the steps of carrying out a first treatment on the surface of the According to the coordinates (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 )。
Description
Technical Field
The present invention relates to the field of optical communication devices, and in particular, to an optical test system, a calibration method thereof, and a calibration member.
Background
The optical communication (Optical Communication) is a communication system using an optical wave as a carrier wave. According to the characteristics of the light source, the method can be divided into laser communication and non-laser communication; according to transmission media, it can be classified into atmospheric laser communication and optical fiber communication. The optical communication device comprises various lasers, detectors, optical transceiver integrated components and modules and the like.
In the optical communication device industry, coupling and testing precision of optical communication devices are higher and higher, so that higher requirements are also put on testing basic equipment in the optical communication devices. The problems of low accuracy, and difficult alignment of incident angles and positions exist in the coupling and testing of the conventional optical communication device.
Disclosure of Invention
The invention aims to provide an optical test system, a calibration method thereof and a calibration piece, which solve the problems of low accuracy, difficult alignment of incident angle and position in the coupling and testing of optical communication devices.
The invention discloses a calibration method of an optical test system, which comprises a photon outlet system, a reference table, a calibration piece and a detection subsystem, wherein the photon outlet system is used for measuring the optical test system; the calibration method comprises the steps of:
the outgoing photon system emits a beam to a detection subsystem, which acquires the near field coordinates (X 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the photonic system so that X 1 ＝X 2 ，Y 1 ＝Y 2 ；
Placing the calibration piece on the reference table and in the optical path, the light beam passing through the calibration piece; acquiring the coordinates of the beam before the calibration part is placed (X 3 ,Y 3 ) And post-placement beam coordinates (X 4 ,Y 4 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference stage to X 3 ＝X 4 ，Y 3 ＝Y 4 ；
The calibration member is adjusted to obtain the coordinates (X) 5 ,Y 5 ) The method comprises the steps of carrying out a first treatment on the surface of the The calibration member is adjusted so that the light beam is reflected by the calibration member and then is emitted to the detection subsystem, and the coordinates (X) 6 ,Y 6 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference table to make Y 5 ＝Y 6 ；
Placing an optical fiber standard on a reference table, and enabling a light beam to pass through the optical fiber standard and then to be emitted to a detection subsystem to obtain a light beam coordinate (X) 7 ,Y 7 ) The method comprises the steps of carrying out a first treatment on the surface of the According to the coordinates (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 )。
Optionally, the calibration piece is a right trapezoid square prism with two right trapezoid bottom surfaces, and the side surface where the heights of the two bottom surfaces of the calibration piece are located together is a vertical surface; the reference table comprises a reference surface and a placement surface which are mutually perpendicular; the step of placing the calibration piece on the reference table and in the light path specifically comprises the following steps:
and placing the calibration piece on a placing surface on the reference table and in the optical path, wherein a vertical surface of the calibration piece is abutted against a reference surface of the reference table.
Optionally, a side surface of the calibration piece opposite to the vertical surface is an inclined surface; the adjustment calibration member acquires the coordinates (X 5 ,Y 5 ) The method comprises the following steps:
the calibration piece is adjusted so that the inclined surface of the calibration piece is abutted against the reference surface of the reference table, and the coordinates (X 5 ,Y 5 )。
Optionally, the other two sides of the calibration piece are provided with staggered reflecting films; the step of adjusting the calibration member to enable the light beam to be reflected by the calibration member and then emitted to the detection subsystem specifically comprises the following steps:
and adjusting the light emergent position of the light beam on the calibration piece, so that the light beam is reflected by the two high-reflection films and then is emitted to the detection subsystem.
Optionally, the step of placing the optical fiber standard on the reference table specifically includes:
the optical fiber standard is placed on the placement surface of the reference table and is abutted against the reference surface.
Optionally, the optical fiber standard is a ferrule.
Optionally, the ferrule has a radius R, the radial dimension of the ferrule is defined by a coordinate (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 ) The method comprises the following steps:
according to the coordinates (X 7 ,Y 7 ) And the radius R of the ferrule, thereby obtaining a coordinate (X 0 ，Y 0 ) Wherein X is 0 Is the reference coordinate of the reference plane, Y 0 To place the reference coordinates of the surface, X 0 ＝X 7 -R，Y 0 ＝Y 7 -R。
The invention also discloses an optical test system which is calibrated by the optical test system calibration method, and comprises a photon output system, a reference table, a calibration piece, an optical fiber standard and a detection subsystem.
The invention also discloses a calibration piece which is applied to the optical test system, wherein the two bottom surfaces of the calibration piece are right trapezoid rectangular prisms, the side surface where the heights of the two bottom surfaces of the calibration piece are common is a vertical surface, the side surface opposite to the vertical surface is an inclined surface, and the other two side surfaces of the calibration piece are provided with staggered reflecting films.
Optionally, the reflective film is a highly reflective film.
The calibration method of the optical test system of the invention eliminates errors in the relative position of the laser beam entering light and the detection subsystem, the relative position of the light beam and the reference surface and the placement surface of the reference table and the relative position of the reference table and the detection subsystem by the calibration of the calibration piece on the reference table, improves the precision of all the components, has high precision, and finally adopts the high-precision optical fiber standard to determine the coordinates (X 0 ，Y 0 ) Therefore, the whole optical test system has high calibration precision, and the incidence angle and the position of the optical communication device in coupling and testing are easy to find.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is evident that the figures in the following description are only some embodiments of the invention, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:
FIG. 1 is a schematic block diagram of an optical test according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of an optical test of an embodiment of the present invention;
FIG. 3 is a schematic view of a reference table according to an embodiment of the invention;
FIG. 4 is a schematic view of an embodiment of the calibration piece of the present invention;
FIG. 5 is a top view of an embodiment of the calibration element of the present invention;
FIG. 6 is a side view of a ferrule according to an embodiment of the present invention;
FIG. 7 is a front view of a ferrule according to an embodiment of the present invention;
FIG. 8 is a schematic view of the incident light beam when the vertical plane of the embodiment of the invention is attached to the reference plane;
FIG. 9 is a schematic view of the incident light beam when the inclined surface of the embodiment of the present invention is abutted against the reference surface;
fig. 10 is a schematic view showing refraction of a light beam by a reflective film when an inclined surface of an embodiment of the present invention is abutted against a reference surface.
1, a photon system is output; 11. a light source; 12. an optical fiber; 13. a coupler; 14. a collimator; 2. a reference stage; 21. a reference surface; 22. placing a surface; 3. a calibration piece; 31. a bottom surface; 32. a vertical plane; 33. an inclined surface; 34. a reflective film; 4. a detection subsystem; 5. an optical fiber standard; 51. ceramic ferrule.
Detailed Description
It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose of describing particular embodiments, but that the invention may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
The invention is described in detail below with reference to the attached drawings and alternative embodiments.
As an embodiment of the present invention, an optical test system calibration method is disclosed, and as shown in fig. 1 and 2, the optical test system includes a photonic system 1, a reference table 2, a calibration piece 3, an optical fiber standard 5, and a detection subsystem 4. The calibration method comprises the steps of:
s100: the outgoing photon system emits a beam to a detection subsystem, which acquires the near field coordinates (X 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the photonic system so that X 1 ＝X 2 ，Y 1 ＝Y 2 ；
S200: placing the calibration piece on the reference table and in the optical path, the light beam passing through the calibration piece; acquiring the coordinates of the beam before the calibration part is placed (X 3 ,Y 3 ) And post-placement beam coordinates (X 4 ,Y 4 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference stage to X 3 ＝X 4 ，Y 3 ＝Y 4 ；
S300: the calibration member is adjusted to obtain the coordinates (X) 5 ,Y 5 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the calibration piece so thatThe light beam is reflected by the calibration piece and then is emitted to the detection subsystem, and the coordinate (X) 6 ,Y 6 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference table to make Y 5 ＝Y 6 ；
S400: placing an optical fiber standard on a reference table, and enabling a light beam to pass through the optical fiber standard and then to be emitted to a detection subsystem to obtain a light beam coordinate (X) 7 ,Y 7 ) The method comprises the steps of carrying out a first treatment on the surface of the According to the coordinates (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 )。
As shown in fig. 1 and 2, the optical test system comprises a photonic system 1, a reference table 2, a calibration piece 3 and a detection subsystem 4. The light emitting subsystem 1 is used for emitting laser beams, the light emitting subsystem 1 can be composed of a light source 11, an optical fiber 12, a coupler 13 and a collimator 14, the light source 11 emits the laser beams, and the laser beams are transmitted to the collimator 14 through the optical fiber 12 for collimation, and then the light is collimated. In the calibration process, the collimated light passes through the calibration piece 3 or the optical fiber standard 5 and then is emitted to the detection subsystem 4, and the detection subsystem 4 can acquire the space coordinate position of the laser.
As shown in fig. 3, the reference table 2 may have an "L" shape, which includes a placement surface 22 and a reference surface 21, the placement surface 22 and the reference surface 21 being perpendicular to each other. In calibration, the calibration piece 3 or the optical fiber standard 5 is placed on the placement surface 22 and positioned against the reference surface 21.
As shown in fig. 4 and 5, the calibration member 3 may be a right trapezoid rectangular prism with two bottom surfaces 31, the side surface where the heights of the two bottom surfaces 31 of the calibration member 3 are common is a vertical surface 32, the side surface opposite to the vertical surface 32 is an inclined surface 33, the other two side surfaces of the calibration member 3 are provided with offset reflective films 34, and the reflective films 34 may be high-reflection films. The accuracy of other included angles except right angles in the two bottom surfaces 31 of the calibration piece 3 is smaller than 30 ", so that the calibration accuracy is ensured.
The detection subsystem 4 may be a beam quality analyzer, which may detect the spatial coordinate position of the laser light.
The calibration piece 3 is used for determining the relative positions of the laser beam, the detection subsystem 4 and the reference table 2, and the optical fiber standard 5 is used for assisting the detection subsystem 4 in determining the position surface 22 and the surrounding area of the reference table 2 and the reference surface 21Forming spatial coordinates of the region. After the spatial coordinates of the area surrounded by the placement surface 22 of the reference table 2 and the reference surface 21 are determined (the coordinate base point is (X) 0 ，Y 0 ) The detection subsystem 4 can accurately determine the spatial coordinates of the optical communication device placed on the reference table 2, and thus the angle of incidence and the position thereof. As shown in fig. 6 and 7, the optical fiber standard 5 may be a cylindrical ferrule 51 or other optical communication devices. And the precision of the ceramic ferrule 51 is high, which is beneficial to accurate calibration. Specifically, the inner hole and the outer cylindrical surface of the ceramic ferrule 51 are concentric, the aperture is controlled according to a certain precision, and after penetrating into the optical fiber 12, the end surface is ground by 90 degrees, and the grinding precision of 90 degrees is strictly controlled.
Specifically, in step S100, by acquiring the near-field coordinates (X 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) The light-emitting subsystem 1, in particular the light-entering angle of the laser beam to the detection subsystem 4, is adjusted such that X 1 ＝X 2 ，Y 1 ＝Y 2 The adjustment of the relative position of the beam entering light and the detection subsystem 4 can be accomplished.
In step S200, the reference table 2 is adjusted, in particular, the dimensions of the reference table 2 are adjusted such that X 3 ＝X 4 ，Y 3 ＝Y 4 The adjustment of the parallelism of the laser beam with the reference surface 21 and the placement surface 22 of the reference table 2 can be completed. Specifically, as shown in fig. 8, the vertical surface 32 of the calibration piece 3 is abutted against the reference surface 21 of the reference table 2.
In step S300, the adjustment gauge 3 acquires the beam coordinates (X 5 ,Y 5 ) The calibration member 3 is adjusted such that the light beam is reflected by the calibration member 3 and then directed to the detection subsystem 4, where the coordinates (X 6 ,Y 6 ) The reference table 2 is adjusted to make Y 5 ＝Y 6 The relative position adjustment of the reference table 2, the detection subsystem 4 can be completed.
Specifically, as shown in fig. 9 and 10, the collimator 3 is adjusted on the reference table 2, and the inclined surface 33 of the collimator 3 is brought into contact with the reference surface 21 of the reference table 2, so that the light beam is obliquely incident through the collimator 3. Then the transverse incidence position of the light beam is regulated to make the light beamCan be directly transmitted to the detection subsystem 4 (as shown in fig. 9) to obtain the coordinates (X) 5 ,Y 5 ). The light incidence position is adjusted again, so that the light beam is transmitted to the detection subsystem 4 after being reflected by the two reflecting films 34 of the calibration piece 3 (as shown in fig. 10), and the coordinates (X 6 ，Y 6 ). Only one of the angular dimensions of the reference table 2 is then adjusted so that Y 5 ＝Y 6 Thereby completing the relative position adjustment of the reference table 2 and the detection subsystem 4. Finally, the standard component can be removed, and the vertical surface 32 can be attached to the reference surface 21 of the reference table 2, and if the coordinates of the light beam on the detection subsystem 4 are unchanged before and after placement, it can be confirmed that the reference table 2 and the detection subsystem 4 are in the adjusted state, and the step is a confirmation step.
In step S400, the optical fiber standard 5 is placed on the placement surface 22 of the reference table 2 and is abutted against the reference surface 21, and the optical fiber standard 5 is placed on the basis of the radius and the beam coordinates (X 7 ,Y 7 ) Thereby obtaining the coordinates (X) of the reference zero point of the reference table 2 0 ，Y 0 ). Specifically, X 0 ＝X 7 -R，Y 0 ＝ Y7 -R; wherein X is 0 Is the reference coordinate of the reference plane, Y 0 Is the reference coordinates of the placement surface.
The calibration method of the optical test system of the invention eliminates errors in the relative position of the laser beam entering light and the detection subsystem 4, the relative position of the light beam and the reference surface 21 and the placement surface 22 of the reference table 2 and errors in the reference table 2 and the detection subsystem 4 by the calibration of the calibration piece 3 on the reference table 2, improves the precision among all the components, has high precision of the calibration piece 3, and finally adopts the high-precision optical fiber standard 5 to determine coordinates (X 0 ，Y 0 ) The precision of each component, the relative position between the components and the like is guaranteed, and finally the whole optical test system is high in calibration precision, and the incidence angle and the position in the coupling and testing of the optical communication device are easy to find.
Specifically, the calibration member 3 is a right trapezoid rectangular prism with two bottom surfaces 31, and the side surface where the heights of the two bottom surfaces 31 of the calibration member 3 are located together is a vertical surface 32; the reference table 2 comprises a reference surface 21 and a placement surface 22 which are mutually perpendicular; as shown in fig. 8, in step S200, the step of placing the calibration piece on the reference table and in the optical path is specifically: and placing the calibration piece on a placing surface on the reference table and in the optical path, wherein a vertical surface of the calibration piece is abutted against a reference surface of the reference table.
Specifically, the side surface of the calibration piece 3 opposite to the vertical surface 32 is an inclined surface 33; as shown in fig. 9, in step S300, the adjustment calibration member acquires the coordinates (X 5 ,Y 5 ) The method comprises the following steps: the calibration piece is adjusted so that the inclined surface of the calibration piece is abutted against the reference surface of the reference table, and the coordinates (X 5 ,Y 5 )。
Specifically, the other two sides of the calibration piece 3 are provided with offset reflective films 34; as shown in fig. 10, in step S300, the step of adjusting the calibration member to reflect the light beam to the detection subsystem specifically includes: and adjusting the light emergent position of the light beam on the calibration piece, so that the light beam is reflected by the two high-reflection films and then is emitted to the detection subsystem.
Specifically, in step S400, the step of placing the optical fiber standard on the reference table specifically includes: the optical fiber standard is placed on the placement surface of the reference table and is abutted against the reference surface.
Specifically, in step S400, the optical fiber standard 5 is the ferrule 51. The ferrule 51 has high accuracy.
Specifically, in step S400, the ferrule 51 has a radius R, and the radial direction of the ferrule is defined according to the coordinates (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 ) The method comprises the following steps: according to the coordinates (X 7 ,Y 7 ) And the radius R of the ferrule, thereby obtaining a coordinate (X 0 ，Y 0 ) Wherein X is 0 Is the reference coordinate of the reference plane, Y 0 To place the reference coordinates of the surface, X 0 ＝X 7 -R，Y 0 ＝ Y7 -R。
As shown in fig. 1 and 2, as another embodiment of the present invention, an optical test system is disclosed, which is calibrated by applying the optical test system calibration method as described above, and includes a photonic system 1, a reference table 2, a calibration piece 3, an optical fiber standard 5, and a detection subsystem 4.
As shown in fig. 4, as another embodiment of the present invention, a calibration member 3 is disclosed as applied to the optical test system described above, the calibration member 3 is a rectangular prism having two bottom surfaces 31 in a right trapezoid shape, the side surface where the heights of the two bottom surfaces 31 of the calibration member 3 are common is a vertical surface 32, the side surface opposite to the vertical surface 32 is an inclined surface 33, and the other two side surfaces of the calibration member 3 are provided with offset reflective films 34.
Alternatively, the reflective film 34 is a highly reflective film.
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, and the steps written in the previous step may be executed before, or executed after, or even executed simultaneously, so long as the implementation of the present solution is possible, all the steps should be considered as falling within the protection scope of the present invention.
The above description of the invention in connection with specific alternative embodiments is further detailed and it is not intended that the invention be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (7)
1. An optical test system calibration method is characterized in that the optical test system comprises a photon outlet system, a reference table, a calibration piece and a detection subsystem; the calibrating piece is a right-trapezoid rectangular prism with two right-trapezoid bottom surfaces, and the side surface where the heights of the two bottom surfaces of the calibrating piece are located is a vertical surface; the reference table comprises a reference surface and a placement surface which are mutually perpendicular; the side surface of the calibration piece opposite to the vertical surface is an inclined surface; the other two side surfaces of the calibration piece are provided with staggered reflecting films;
the calibration method comprises the steps of:
the outgoing photon system emits a beam to a detection subsystem, which acquires the near field coordinates (X 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the photonic system so that X 1 =X 2 ，Y 1 =Y 2 ；
Placing the calibration piece on a placing surface on the reference table and in the light path, wherein a vertical surface of the calibration piece is abutted against a reference surface of the reference table, and a light beam passes through the calibration piece; acquiring the coordinates of the beam before the calibration part is placed (X 3 ,Y 3 ) And post-placement beam coordinates (X 4 ,Y 4 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference stage to X 3 =X 4 ，Y 3 =Y 4 ；
The calibration piece is adjusted so that the inclined surface of the calibration piece is abutted against the reference surface of the reference table, and the coordinates (X 5 ,Y 5 ) The method comprises the steps of carrying out a first treatment on the surface of the The light beam is adjusted at the light emitting position of the calibration piece, so that the light beam is reflected by the two high-reflection films and then is emitted to the detection subsystem, and the light beam coordinate (X) 6 ,Y 6 ) The method comprises the steps of carrying out a first treatment on the surface of the Adjusting the reference table to make Y 5 =Y 6 ；
Placing an optical fiber standard on a reference table, and enabling a light beam to pass through the optical fiber standard and then to be emitted to a detection subsystem to obtain a light beam coordinate (X) 7 ,Y 7 ) The method comprises the steps of carrying out a first treatment on the surface of the According to the coordinates (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 ）。
2. The method for calibrating an optical test system according to claim 1, wherein the step of placing the optical fiber standard on the reference table comprises:
the optical fiber standard is placed on the placement surface of the reference table and is abutted against the reference surface.
3. The method of calibrating an optical test system according to claim 1, wherein the optical fiber standard is a ferrule.
4. The optical test system calibration of claim 3The method is characterized in that the radius of the ferrule is R, the ferrule is characterized in that the ferrule is formed according to the coordinate (X 7 ,Y 7 ) Obtain the coordinates (X) 0 ，Y 0 ) The method comprises the following steps:
according to the coordinates (X 7 ,Y 7 ) And the radius R of the ferrule, thereby obtaining a coordinate (X 0 ，Y 0 ) Wherein X is 0 Is the reference coordinate of the reference plane, Y 0 To place the reference coordinates of the surface, X 0 =X 7 -R，Y 0 =Y 7 -R。
5. An optical test system calibrated by the optical test system calibration method according to any one of claims 1 to 4, comprising a photonic system, a reference stage, a calibration piece, an optical fiber standard, and a detection subsystem.
6. The optical test system according to claim 5, wherein the calibration member is a right rectangular prism with right trapezoid bottom surfaces, the side surface where the heights of the two bottom surfaces of the calibration member are located together is a vertical surface, the side surface opposite to the vertical surface is an inclined surface, and the other two side surfaces of the calibration member are provided with reflection films which are staggered.
7. The calibration element of claim 6, wherein the reflective film is a highly reflective film.
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| CN114978301A (en) | 2022-08-30 |
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