CN114978301A - 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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- CN114978301A CN114978301A CN202210311600.4A CN202210311600A CN114978301A CN 114978301 A CN114978301 A CN 114978301A CN 202210311600 A CN202210311600 A CN 202210311600A CN 114978301 A CN114978301 A CN 114978301A
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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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Abstract
The invention discloses an optical test system and a calibration method and a calibration piece thereof, wherein the calibration method comprises the following steps: the light-emitting subsystem emits a light beam to the detection subsystem, and the detection subsystem acquires the near-field coordinate (X) of the light beam 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the light-emitting subsystem so that X 1 ＝X 2 ，Y 1 ＝Y 2 (ii) a Placing a calibration piece on the reference table in the light path, the light beam passing through the calibration piece; obtaining the coordinates (X) of the light beam before the calibration piece is placed 3 ,Y 3 ) And post-placement beam coordinates (X) 4 ,Y 4 ) (ii) a Adjust the reference table so that X 3 ＝X 4 ，Y 3 ＝Y 4 (ii) a Adjusting the calibration piece to obtain the coordinates (X) of the light beam at the moment 5 ,Y 5 ) (ii) a Adjusting the calibration piece to make the light beam reflected by the calibration piece and then emitted to the detection subsystem, and acquiring the coordinate (X) of the light beam at the moment 6 ,Y 6 ) (ii) a Adjustment ofReference table makes Y 5 ＝Y 6 (ii) a Placing the optical fiber standard on a reference platform, and making the light beam pass through the optical fiber standard and then irradiate the light beam to a detection subsystem to obtain the coordinate (X) of the light beam at the moment 7 ,Y 7 ) (ii) a According to the coordinate (X) 7 ,Y 7 ) Obtaining the coordinate (X) of the reference zero point of the reference platform 0 ，Y 0 )。
Description
Technical Field
The invention relates to the technical field of optical communication devices, in particular to an optical test system and a calibration method and a calibration piece thereof.
Background
Optical Communication (Optical Communication) is a Communication method using an Optical wave as a carrier. According to the characteristics of a light source, the method can be divided into laser communication and non-laser communication; according to transmission media, atmospheric laser communication and optical fiber communication can be divided. The optical communication device comprises various lasers, detectors, optical transceiver integrated components and modules and the like.
In the industry of optical communication devices, the coupling and testing precision of the optical communication devices is higher and higher, and thus higher requirements are put forward on testing basic equipment in the optical communication devices. The problems of low precision and difficult alignment of an incident angle and a position exist in the coupling and testing of the existing optical communication device.
Disclosure of Invention
The invention aims to provide an optical test system, a calibration method and a calibration piece thereof, which solve the problems of low precision and difficult alignment of an incident angle and a position in the coupling and testing of an optical communication device.
The invention discloses a calibration method of an optical test system, wherein the optical test system comprises a light-emitting subsystem, a reference platform, a calibration piece and a detection subsystem; the calibration method comprises the following steps:
the light-emitting subsystem emits a light beam to the detection subsystem, and the detection subsystem acquires the near-field coordinate (X) of the light beam 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the light-emitting subsystem so that X 1 ＝X 2 ，Y 1 ＝Y 2 ；
Placing a calibration piece on the reference table in the light path, the light beam passing through the calibration piece; obtaining the coordinates (X) of the light beam before the calibration piece is placed 3 ,Y 3 ) And post-placement beam coordinates (X) 4 ,Y 4 ) (ii) a Adjust the reference table so that X 3 ＝X 4 ，Y 3 ＝Y 4 ；
Adjusting the calibration piece to obtain the coordinates (X) of the light beam at the moment 5 ,Y 5 ) (ii) a Adjusting the calibration piece to make the light beam reflected by the calibration piece and then emitted to the detection subsystem, and acquiring the coordinate (X) of the light beam at the moment 6 ,Y 6 )；Adjusting the reference stage so that Y 5 ＝Y 6 ；
Placing the optical fiber standard on a reference platform, and making the light beam pass through the optical fiber standard and then irradiate the light beam to a detection subsystem to obtain the coordinate (X) of the light beam at the moment 7 ,Y 7 ) (ii) a According to the coordinate (X) 7 ,Y 7 ) Obtaining the coordinate (X) of the reference zero point of the reference platform 0 ，Y 0 )。
Optionally, the calibration piece is a straight quadrangular prism with two right-angled trapezoidal bottom surfaces, and a side surface where the two bottom surfaces of the calibration piece are located together is a vertical surface; the datum table comprises a datum plane and a placing plane which are perpendicular to each other; the step of placing the calibration piece on the reference table and in the light path is specifically as follows:
the calibration piece is placed on a placing surface on the reference table and is positioned in the light path, and 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 adjusting calibration piece acquires the light beam coordinate (X) at the moment 5 ,Y 5 ) The method comprises the following specific steps:
adjusting the calibration piece to make the inclined surface of the calibration piece abut against the reference surface of the reference table, and acquiring the light beam coordinate (X) at the moment 5 ,Y 5 )。
Optionally, the other two side surfaces of the calibration piece are provided with staggered reflecting films; the step of adjusting the calibration member so that the light beam is reflected by the calibration member and then emitted to the detection subsystem specifically comprises:
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 emitted to the detection subsystem.
Optionally, the step of placing the optical fiber standard on the reference table specifically includes:
and placing the optical fiber standard product on the placing surface of the reference table and attaching the optical fiber standard product to the reference surface.
Optionally, the fiber standard is a ferrule.
Optionally, the ferrule has a radius R, as measured by coordinates (X) 7 ,Y 7 ) Obtaining the coordinates of the reference zero point of the reference platform(X 0 ，Y 0 ) The method comprises the following specific steps:
according to the coordinate (X) 7 ,Y 7 ) And the radius R of the ferrule, thereby obtaining the coordinate (X) 0 ，Y 0 ) Wherein X is 0 Reference coordinates of a reference plane, Y 0 As reference coordinates of the lying surface, X 0 ＝X 7 -R，Y 0 ＝Y 7 -R。
The invention also discloses an optical test system, which is calibrated by applying the calibration method of the optical test system and comprises a light-emitting subsystem, a reference table, a calibration piece, an optical fiber standard product and a detection subsystem.
The invention also discloses a calibration piece, which is applied to the optical test system, wherein the calibration piece is a straight quadrangular prism with two right-angled trapezoid bottom surfaces, the side surface of the calibration piece where the two bottom surfaces are high 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 eliminates errors in the relative position of the laser beam incidence light and the detection subsystem, the relative position of the beam and the reference surface and the placing surface of the reference platform, and the reference platform and the detection subsystem by calibrating the calibration piece on the reference platform, improves the precision of each part, has high precision of the calibration piece, and finally adopts the optical fiber standard product with high precision to determine the coordinate (X) 0 ，Y 0 ) Therefore, the whole optical test system has high calibration precision, and the incident angle and position are easy to find in the coupling and test of the optical communication device.
Drawings
The accompanying drawings, which are included to provide a further understanding of the 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 obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. 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 according to an embodiment of the present invention;
FIG. 3 is a schematic view of a reference table according to an embodiment of the present invention;
FIG. 4 is a schematic view of a calibration piece according to an embodiment of the invention;
FIG. 5 is a top view of a calibration piece according to an embodiment 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 illustration of light incident on a beam with a vertical surface against a reference surface in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram of the incident light of the light beam when the inclined surface abuts against the reference surface according to the embodiment of the present invention;
FIG. 10 is a schematic representation of the refraction of a light beam through a reflective film when a tilted surface is against a reference surface in accordance with an embodiment of the present invention.
Wherein, 1, a light-emitting subsystem; 11. a light source; 12. an optical fiber; 13. a coupler; 14. a collimator; 2. a reference table; 21. a reference plane; 22. placing the noodles; 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. and (4) the ceramic ferrule.
Detailed Description
It is to be understood that the terminology, the specific structural and functional details disclosed herein are for the purpose of describing particular embodiments only, and are representative, but that the present 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 figures and alternative embodiments.
As an embodiment of the present invention, a calibration method for an optical test system is disclosed, as shown in fig. 1 and fig. 2, the optical test system includes a light-emitting subsystem 1, a reference stage 2, a calibration piece 3, an optical fiber standard 5, and a probing subsystem 4. The calibration method comprises the following steps:
s100: the light-emitting subsystem emits a light beam to the detection subsystem, and the detection subsystem acquires the near-field coordinate (X) of the light beam 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the light-emitting subsystem so that X 1 ＝X 2 ，Y 1 ＝Y 2 ；
S200: placing a calibration piece on the reference table and in the light path, the light beam passing through the calibration piece; obtaining the coordinates (X) of the light beam before the calibration piece is placed 3 ,Y 3 ) And post-placement beam coordinates (X) 4 ,Y 4 ) (ii) a Adjust the reference table so that X 3 ＝X 4 ，Y 3 ＝Y 4 ；
S300: adjusting the calibration piece to obtain the coordinates (X) of the light beam at the moment 5 ,Y 5 ) (ii) a Adjusting the calibration member to reflect the light beam to the detection subsystem, and acquiring the coordinate (X) of the light beam 6 ,Y 6 ) (ii) a Adjusting the reference stage so that Y 5 ＝Y 6 ；
S400: placing the optical fiber standard on a reference platform, and making the light beam pass through the optical fiber standard and then irradiate the light beam to a detection subsystem to obtain the coordinate (X) of the light beam at the moment 7 ,Y 7 ) (ii) a According to the coordinate (X) 7 ,Y 7 ) Obtaining the coordinate (X) of the reference zero point of the reference platform 0 ，Y 0 )。
As shown in fig. 1 and 2, the optical testing system includes a light-emitting subsystem 1, a reference stage 2, a calibration member 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-emitting is collimated light. In the calibration process, collimated light is emitted to the detection subsystem 4 after passing through the calibration piece 3 or the optical fiber standard 5, and the detection subsystem 4 can acquire the spatial coordinate position of 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. During 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 piece 3 may be a rectangular prism having two bottom surfaces 31 in the shape of a right trapezoid, a vertical surface 32 is a side surface of the calibration piece 3 where the two bottom surfaces 31 are located, an inclined surface 33 is a side surface opposite to the vertical surface 32, two other side surfaces of the calibration piece 3 are provided with staggered reflective films 34, and the reflective films 34 may be high reflective films. The precision of the included angle of the two bottom surfaces 31 of the calibration piece 3 except the right angle is less than 30 ″, and the calibration precision is ensured.
The detection subsystem 4 may be a beam quality analyzer that can detect the spatial coordinate position of the laser.
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 to determine the space coordinates of an area surrounded by the placing surface 22 and the reference surface 21 of the reference table 2. After the space coordinates of the region surrounded by the mounting surface 22 and the reference surface 21 of the reference table 2 are determined (the base point of the coordinates 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, thereby accurately determining the incident angle and position thereof. As shown in fig. 6 and 7, the optical fiber standard 5 may be a ferrule 51 having a cylindrical shape, or may be another optical communication device. And the ceramic ferrule 51 has high precision, which is beneficial to precise calibration. Specifically, the inner hole of the ferrule 51 is concentric with the outer cylindrical surface, the aperture is controlled according to a certain precision, and after the optical fiber 12 is inserted, the end surface is ground by 90 degrees, and the grinding precision of 90 degrees is strictly controlled.
Specifically, in step S100, the near field coordinates (X) of the light beam are acquired 1 ,Y 1 ) And far field coordinate (X) 2 ,Y 2 ) Adjusting the light-emitting subsystem 1, specifically, adjusting the incident angle of the laser beam to the detection subsystem 4, so that X is 1 ＝X 2 ，Y 1 ＝Y 2 Adjustment of the relative position of the beam entrance and detection subsystem 4 may be accomplished.
In step S200, the reference stage 2 is adjusted, in particular the dimensions of the reference stage 2 are adjusted such that X 3 ＝X 4 ，Y 3 ＝Y 4 The adjustment of the laser beam in parallel with the reference surface 21 and the mounting 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 abuts on the reference surface 21 of the reference table 2.
In step S300, the alignment member 3 is adjusted to acquire beam coordinates (X) 5 ,Y 5 ) Adjusting the calibration member 3 to make the light beam reflected by the calibration member 3 and then emitted to the detection subsystem 4, and acquiring the coordinate (X) of the light beam at the moment 6 ,Y 6 ) Adjusting the reference table 2 so that Y is 5 ＝Y 6 The relative position adjustment of the reference table 2 and the detection subsystem 4 can be completed.
Specifically, as shown in fig. 9 and 10, the collimating element 3 is adjusted on the reference table 2 so that the inclined surface 33 of the collimating element 3 abuts on the reference surface 21 of the reference table 2, and the light beam is made to enter obliquely through the collimating element 3. Then, the transverse incidence position of the light beam is adjusted, so that the light beam can be directly transmitted to the detection subsystem 4 (as shown in FIG. 9), and the light beam coordinate (X) at the moment is obtained 5 ,Y 5 ). Then, the light incident position is adjusted, so that the light beam is transmitted to the detection subsystem 4 after being reflected by the two reflective films 34 of the calibration piece 3 (as shown in fig. 10), and the light beam coordinate (X) at this time is obtained 6 ，Y 6 ). Thereafter only one of the angular dimensions of the reference table 2 is 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, the vertical surface 32 is attached to the reference surface 21 of the reference table 2, and if the coordinates of the light beam on the detection subsystem 4 before and after placement are unchanged, the reference table 2 and the detection subsystem 4 can be confirmed to be in the adjusted state, which 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 in accordance with the radius of the optical fiber standard 5 and the beam coordinate (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 0 Reference coordinates of a reference plane, Y 0 Is the reference coordinate of the placing surface.
The calibration method of the optical test system eliminates errors in the relative position of the laser beam incidence light and the detection subsystem 4, the relative position of the beam and the reference surface 21 and the placing surface 22 of the reference platform 2 and the errors in the reference platform 2 and the detection subsystem 4 by calibrating the calibration piece 3 on the reference platform 2, improves the precision of each part, has high precision of the calibration piece 3, and finally determines coordinates (X) by adopting the optical fiber standard 5 with high precision 0 ，Y 0 ) The precision of each component and the relative position between the components is ensured, the calibration precision of the whole optical test system is high, and the incident angle and the position are easy to find in the coupling and test of the optical communication device.
Specifically, the calibration piece 3 is a right-angled trapezoidal rectangular prism with two bottom surfaces 31, and a side surface where the two bottom surfaces 31 of the calibration piece 3 are located together is a vertical surface 32; the reference table 2 comprises a reference surface 21 and a placing surface 22 which are perpendicular to each other; as shown in fig. 8, in step S200, the step of placing the calibration piece on the reference table and in the optical path specifically includes: the calibration piece is placed on a placing surface on the reference table and is positioned in the light path, and 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 calibration piece is adjusted to obtain the beam coordinates (X) at this time 5 ,Y 5 ) The method comprises the following specific steps: adjusting the calibration piece to make the inclined surface of the calibration piece abut against the reference surface of the reference table, and acquiring the light beam coordinate (X) at the moment 5 ,Y 5 )。
Specifically, the other two sides of the calibration piece 3 are provided with staggered reflecting films 34; as shown in fig. 10, in step S300, the step of adjusting the calibration member to make the light beam reflected by the calibration member and then emitted to the detection subsystem specifically includes: and adjusting the light-emitting 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 the step S400, the step of placing the optical fiber standard on the reference table specifically includes: and placing the optical fiber standard product on the placing surface of the reference table and attaching the optical fiber standard product to the reference surface.
Specifically, in step S400, the optical fiber standard 5 is the ferrule 51. The ferrule 51 is highly accurate.
Specifically, in the step S400, the radius of the ferrule 51 is R, which is determined according to the coordinate (X) 7 ,Y 7 ) Obtaining the coordinate (X) of the reference zero point of the reference platform 0 ，Y 0 ) The method comprises the following specific steps: according to the coordinate (X) 7 ,Y 7 ) And the radius R of the ferrule, thereby obtaining the coordinate (X) 0 ，Y 0 ) Wherein X is 0 Reference coordinates of a reference plane, Y 0 As reference coordinates of the lying surface, X 0 ＝X 7 -R，Y 0 ＝ Y7 -R。
As shown in fig. 1 and fig. 2, as another embodiment of the present invention, an optical test system is disclosed, which is calibrated by the calibration method of the optical test system as described above, and includes an emergent light subsystem 1, a reference platform 2, a calibration piece 3, an optical fiber standard 5, and a probing subsystem 4.
As shown in fig. 4, as another embodiment of the present invention, a calibration piece 3 is disclosed, which is applied to the above optical test system, the calibration piece 3 is a right-angled trapezoidal rectangular prism having two bottom surfaces 31, a vertical surface 32 is a side surface of the calibration piece 3 where the two bottom surfaces 31 are located, a side surface opposite to the vertical surface 32 is an inclined surface 33, and two other side surfaces of the calibration piece 3 are provided with staggered reflective films 34.
Optionally, the reflective film 34 is a highly reflective film.
It should be noted that, the limitations of the steps involved in the present disclosure are not considered to limit the order of the steps without affecting the implementation of the specific embodiments, and the steps written in the foregoing may be executed first, or executed later, or even executed simultaneously, and as long as the present disclosure can be implemented, all should be considered to belong to the protection scope of the present disclosure.
The foregoing is a more detailed description of the invention in connection with specific alternative embodiments, and the practice of the invention should not be construed as limited to those descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. The calibration method of the optical test system is characterized in that the optical test system comprises a light-emitting subsystem, a reference table, a calibration piece and a detection subsystem; the calibration method comprises the following steps:
the light-emitting subsystem emits a light beam to the detection subsystem, and the detection subsystem acquires the near-field coordinate (X) of the light beam 1 ,Y 1 ) And far field coordinates (X) 2 ,Y 2 ) Adjusting the light-emitting subsystem so that X 1 ＝X 2 ，Y 1 ＝Y 2 ；
Placing a calibration piece on the reference table in the light path, the light beam passing through the calibration piece; obtaining the coordinates (X) of the light beam before the calibration piece is placed 3 ,Y 3 ) And post-placement beam coordinates (X) 4 ,Y 4 ) (ii) a Adjust the reference table so that X 3 ＝X 4 ，Y 3 ＝Y 4 ；
Adjusting the calibration piece to obtain the coordinates (X) of the light beam at the moment 5 ,Y 5 ) (ii) a Adjusting the calibration piece to make the light beam reflected by the calibration piece and then emitted to the detection subsystem, and acquiring the coordinate (X) of the light beam at the moment 6 ,Y 6 ) (ii) a Adjusting the reference stage so that Y 5 ＝Y 6 ；
Placing the optical fiber standard on a reference platform, and making the light beam pass through the optical fiber standard and then irradiate the light beam to a detection subsystem to obtain the coordinate (X) of the light beam at the moment 7 ,Y 7 ) (ii) a According to the coordinate (X) 7 ,Y 7 ) Obtaining the coordinate (X) of the reference zero point of the reference platform 0 ，Y 0 )。
2. The method for calibrating an optical test system according to claim 1, wherein the calibration piece is a rectangular prism with two rectangular trapezoid bottom surfaces, and the common side surface of the two bottom surfaces of the calibration piece is a vertical surface; the datum table comprises a datum plane and a placing plane which are perpendicular to each other; the step of placing the calibration piece on the reference table and in the light path is specifically as follows:
the calibration piece is placed on a placing surface on the reference table and is positioned in the light path, and a vertical surface of the calibration piece is abutted against a reference surface of the reference table.
3. The method for calibrating an optical test system according to claim 2, wherein a side of said calibration piece opposite to said vertical plane is an inclined plane; the adjusting calibration piece acquires the light beam coordinate (X) at the moment 5 ,Y 5 ) The method comprises the following specific steps:
adjusting the calibration piece to make the inclined surface of the calibration piece abut against the reference surface of the reference table, and acquiring the light beam coordinate (X) at the moment 5 ,Y 5 )。
4. The method for calibrating an optical test system according to claim 3, wherein the other two sides of the calibration piece are provided with the staggered reflective films; the step of adjusting the calibration member so that the light beam is reflected by the calibration member and then emitted to the detection subsystem specifically comprises:
and adjusting the light-emitting 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.
5. The method for calibrating an optical test system according to claim 2, wherein the step of placing the optical fiber standard on the reference stage comprises:
and placing the optical fiber standard product on the placing surface of the reference table and attaching the optical fiber standard product to the reference surface.
6. The method of calibrating an optical test system according to claim 1, wherein said fiber optic standard is a ferrule.
7. The method of calibrating an optical test system according to claim 6, wherein said ferrule has a radius R and said reference coordinate (X) 7 ,Y 7 ) Obtaining the coordinate (X) of the reference zero point of the reference platform 0 ，Y 0 ) Is concretely the steps of：
According to the coordinate (X) 7 ,Y 7 ) And the radius R of the ferrule, thereby obtaining the coordinate (X) 0 ，Y 0 ) Wherein X is 0 Reference coordinates of a reference plane, Y 0 As reference coordinates of the lying surface, X 0 ＝X 7 -R，Y 0 ＝Y 7 -R。
8. An optical test system calibrated by the calibration method of any one of claims 1 to 7, comprising an optical extraction subsystem, a reference stage, a calibration piece, an optical fiber standard and a detection subsystem.
9. The optical testing system of claim 8, wherein the calibration piece is a rectangular prism with two right-angled trapezoidal bottom surfaces, the common side surface of the two bottom surfaces of the calibration piece is a vertical surface, the opposite side surface of the calibration piece is an inclined surface, and the other two side surfaces of the calibration piece are provided with staggered reflecting films.
10. The calibration member of claim 9, wherein the reflective film is a highly reflective film.
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| CN110207587A (en) * | 2019-06-10 | 2019-09-06 | 北京航天计量测试技术研究所 | A kind of prism of corner cube optical apex measuring device and measurement method |
| CN112596257A (en) * | 2020-12-30 | 2021-04-02 | 中国科学院长春光学精密机械与物理研究所 | Optical axis calibration method of off-axis reflective optical lens |
| CN215727694U (en) * | 2021-08-12 | 2022-02-01 | 珠海市运泰利自动化设备有限公司 | Specular reflectivity measuring device |
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