WO2016197642A1 - Élément optique pour couplage vertical avec un réseau d'émetteurs-récepteurs photoélectriques et procédé de fabrication - Google Patents

Élément optique pour couplage vertical avec un réseau d'émetteurs-récepteurs photoélectriques et procédé de fabrication Download PDF

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Publication number
WO2016197642A1
WO2016197642A1 PCT/CN2016/076140 CN2016076140W WO2016197642A1 WO 2016197642 A1 WO2016197642 A1 WO 2016197642A1 CN 2016076140 W CN2016076140 W CN 2016076140W WO 2016197642 A1 WO2016197642 A1 WO 2016197642A1
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WIPO (PCT)
Prior art keywords
optical
angled
prism
optical signal
signal transmission
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PCT/CN2016/076140
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English (en)
Chinese (zh)
Inventor
黄美金
谭国华
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烽火通信科技股份有限公司
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Publication of WO2016197642A1 publication Critical patent/WO2016197642A1/fr

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    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details

Definitions

  • the present invention relates to the field of optical fiber communication, and in particular to an optical component and a manufacturing method for vertically coupling with an optoelectronic transceiver array.
  • Wavelength division multiplexing refers to the transmission of multiple wavelengths, which are coupled to the same waveguide or optical fiber of an optical line.
  • Demultiplexing refers to the technique of separating the total light in a waveguide or an optical fiber by wavelength.
  • the arrayed waveguide grating is realized.
  • An ideal device for wavelength division multiplexing/demultiplexing which can be coupled with an optical channel of an optoelectronic transceiver array to realize mutual conversion of optical signals and electrical signals.
  • the optical path angle method is often used to realize the vertical coupling between the arrayed waveguide grating and the photoelectric transceiver array.
  • the optical fiber array is ground into a 45° mirror to realize a 90° rotation angle of the optical signal. The use of this method to achieve the optical path angle in practical applications shows the following problems:
  • the fiber When the fiber is ground, the fiber may be bent or twisted, which affects the accuracy of the grinding angle, thereby affecting the reflection precision of the fiber array, and thus the coupling efficiency between the arrayed waveguide grating and the photoelectric transceiver array is low.
  • the object of the present invention is to overcome the deficiencies of the above background art, and to provide an optical component and a manufacturing method for vertically coupling with an optoelectronic transceiver array.
  • the optical path angle is realized by a reflective prism, and the output end face of the arrayed waveguide grating chip can be prevented from being damaged, or
  • the output end face of the optical fiber array avoids the problem that the optical fiber is broken when the optical fiber is ground, the optical fiber after grinding is easily broken and cannot be used in the later use, is easy to be mass-produced, and has a high yield; and can effectively improve the optical component and the photoelectric transceiver array.
  • the invention provides an optical component for vertically coupling with an optoelectronic transceiver array, comprising an optical signal transmission device and a reflective prism, wherein the optical signal transmission device is a multi-core optical fiber array or an arrayed waveguide grating chip, and the reflective prism is a rectangular trapezoid Prism or right triangle prism;
  • the reflective prism is a right-angled trapezoidal prism
  • the upper surface, the lower bottom surface, the right-angled waist surface and the inclined waist surface are included, and the angle between the inclined waist surface and the lower bottom surface is 41° to 45°, and the optical signal transmission device passes
  • the adhesive is attached to the right angle waist;
  • the reflective prism is a right-angled triangular prism
  • the first right-angled surface, the second right-angled surface and the inclined surface are included, and the angle between the first right-angled surface and the inclined surface is 41° to 45°, and the optical signal transmission device is bonded
  • the agent is connected to the second right angle surface.
  • the reflective prism is a right-angled trapezoidal prism
  • the right-angled waist surface is equal to the height of the optical signal transmission device
  • the reflective prism is a right-angled triangular prism
  • the second right-angled surface and the optical signal transmission The height of the device is equal.
  • the reflective prism is a right-angled trapezoidal prism
  • the outer surface of the inclined waist surface is provided with a total reflection film
  • the reflection prism is a right-angled triangular prism
  • the outer surface of the inclined surface is provided with total reflection film.
  • the refractive index of the adhesive, the reflective prism, and the optical signal transmission device are uniform.
  • the optical signal transmission device is an arrayed waveguide grating chip
  • the arrayed waveguide grating chip is also connected with a single-core optical fiber array.
  • the refractive index of the adhesive, the reflective prism, the arrayed waveguide grating chip, and the single-core optical fiber array are uniform.
  • the adhesive is a shadowless adhesive.
  • the present invention also provides a method for fabricating an optical component based on the above-described vertical coupling with an optoelectronic transceiver array, comprising the steps of:
  • S1 selecting a right-angled trapezoidal prism or a right-angled triangular prism as a reflective prism, and going to S2;
  • S2 grinding or wire drawing the inclined waist surface of the right-angled trapezoidal prism or the inclined surface of the right-angled triangular prism, and going to S3;
  • the optical components into the environmental test box for environmental testing and optical performance testing. If the environmental test or optical test fails, the optical components are unqualified products, and the end; otherwise, check whether the optical components are defective under the microscope, if there is no defect , the optical components are combined If the product is defective, the optical component is a defective product and ends.
  • the optical component of the present invention realizes the optical path angle by the reflective prism, and the optical path angle is improved by grinding the optical fiber array into a 45° mirror, thereby avoiding destroying the output end face of the arrayed waveguide grating chip or the output end face of the optical fiber array, and avoiding When the optical fiber is ground, the optical fiber is broken, and the polished optical fiber is easily broken and cannot be used in the later use, and the optical component is easy to be mass-produced, and the yield is high.
  • the reflective prism of the present invention is easy to process, has high reflection precision, and can effectively improve the vertical coupling efficiency between the optical component and the photoelectric transceiver array.
  • the reflective prism is fixed in the optical component by an adhesive, the adhesive can prevent the optical signal from being transmitted in the air, and can prevent the dust from entering between the reflective prism and the multi-core optical fiber array or the arrayed waveguide grating chip. Further improving the vertical coupling efficiency between the optical component and the optoelectronic transceiver array.
  • the refractive index of the adhesive, the reflective prism, and the optical signal transmission device are uniform, so that the optical signal reliably propagates in the fully enclosed optical path, further improving the vertical coupling efficiency between the optical component and the photoelectric transceiver array.
  • a total reflection film is provided, and an optical signal transmitted from the inside of the reflection prism can be reflected to the photoelectric transceiver array or the optical signal transmission device, thereby further improving the vertical coupling efficiency between the optical component and the photoelectric transceiver array.
  • Figure 1 is a schematic view showing the structure of an optical component in Example 1 of the present invention.
  • Figure 2 is a schematic view showing the structure of an optical component in Example 2 of the present invention.
  • Figure 3 is a schematic view showing the structure of an optical component in Example 3 of the present invention.
  • Figure 4 is a schematic view showing the structure of an optical component in Example 4 of the present invention.
  • 5 is an optical group for vertically coupling with an optoelectronic transceiver array in an embodiment of the present invention
  • Embodiment 1 provides an optical assembly for vertically coupling with an optoelectronic transceiver array, the optical assembly including a multi-core fiber array 1 and a reflective prism 3.
  • the reflecting prism 3 is a right-angled trapezoidal prism, and includes an upper bottom surface 3c, a lower bottom surface 3a, a right-angled waist surface 3d, and a diagonal waist surface 3b.
  • the angle between the inclined waist surface 3b and the lower bottom surface 3a is 41° to 45°, and the right angle waist
  • the height of the surface 3d is equal to the height of the multi-core optical fiber array 1, and is connected to the multi-core optical fiber array 1 through the adhesive 2.
  • the right-angled trapezoidal prism can be disposed upright or inverted. In this embodiment, the right-angled trapezoidal prism is placed upside down. .
  • Adhesive 2 is a shadowless glue such as an acrylate.
  • the adhesive 2, the reflective prism 3 and the multi-core optical fiber array 1 have the same refractive index, and the optical signal can be sequentially propagated in a straight line inside the multi-core optical fiber array 1, the adhesive 2, and the reflective prism 3.
  • the outer surface of the inclined waist surface 3b is provided with a total reflection film.
  • the photoelectric transceiver array When the right-angled trapezoidal prism is disposed upright, the photoelectric transceiver array is placed directly under the bottom surface 3a of the right-angled trapezoidal prism; when the right-angled trapezoidal prism is placed upside down, the photoelectric transceiver array is placed directly above the bottom surface 3a of the right-angled trapezoidal prism (see Figure 1).
  • the optical signal from the multi-core optical fiber array 1 passes through the adhesive 2 and enters the right-angled trapezoidal prism through the right-angled waist surface 3d to continue transmission. After reaching the oblique waist surface 3b, the optical signal is reversed by the oblique waist surface 3b. It is incident on the lower bottom surface 3a, and is transmitted through the lower bottom surface 3a to the photoelectric transceiver array for reception.
  • the optical signal After the optical signal reaches the oblique waist surface 3b, if an optical signal is transmitted from the oblique waist surface 3b to the total reflection film, the light signal transmitted by the oblique waist surface 3b is reflected by the total reflection film to the lower bottom surface 3a, and then transmitted by the lower bottom surface 3a.
  • the optoelectronic transceiver array To the optoelectronic transceiver array to receive.
  • the optical signal is sent to the lower bottom surface 3a of the right-angled trapezoidal prism, and the optical signal is transmitted by the lower bottom surface 3a, and enters the rectangular trapezoidal prism to continue transmission to the oblique waist surface 3b. Thereafter, the optical signal is reflected by the oblique waist surface 3b to the right-angled waist surface 3d, and then transmitted to the multi-core optical fiber array 1 by the right-angled waist surface 3d.
  • the optical signal When the optical signal reaches the oblique waist surface 3b, if the optical signal is transmitted from the oblique waist surface 3b to the total reflection film, the light signal transmitted by the oblique waist surface 3b is reflected by the total reflection film to the right angle waist surface 3d, and then the right angle waist surface 3d is transmitted to the multi-core fiber array 1.
  • Embodiment 2 provides an optical assembly for vertically coupling with an optoelectronic transceiver array, the optical assembly including a multi-core fiber array 1 and a reflective prism 3.
  • the reflecting prism 3 is a right-angled triangular prism, and includes a first right-angled surface 3e, a second right-angled surface 3g, and a sloped surface 3f.
  • the angle between the first right-angled surface 3e and the inclined surface 3f is 41° to 45°, and the second right-angled surface 3g
  • the height of the multi-core fiber array 1 is equal to the height of the multi-core fiber array 1 and is connected to the multi-core fiber array 1 by the adhesive 2, and the first right-angled surface 3e may be located above the inclined surface 3f or above the inclined surface 3f. In this embodiment, The first straight surface 3e is located above the inclined surface 3f.
  • Adhesive 2 is a shadowless glue such as an acrylate.
  • the adhesive 2, the reflective prism 3 and the multi-core optical fiber array 1 have the same refractive index, and the optical signal can be sequentially propagated in a straight line inside the multi-core optical fiber array 1, the adhesive 2, and the reflective prism 3.
  • the outer surface of the slope 3f is provided with a total reflection film.
  • the photoelectric transceiver array When the first right-angled surface 3e of the right-angled triangular prism is located above the inclined surface 3f, the photoelectric transceiver array is placed directly above the first right-angled surface 3e (see FIG. 2); when the first right-angled surface 3e of the right-angled triangular prism is located When the slope 3f is below, the photoelectric transceiver array is placed directly below the first right angle surface 3e; the optical signal from the multi-core fiber array 1 passes through the adhesive 2 and enters the right triangle prism from the second right angle to continue transmission. After reaching the slope 3f, the optical signal is reflected by the slope 3f to the first right angle surface 3e, and then transmitted by the first right angle surface 3e to the photoelectric transceiver array for reception.
  • the optical signal After the optical signal reaches the slope 3f, if the optical signal is transmitted from the slope 3f to the total reflection film, the light signal transmitted by the slope 3f is reflected by the total reflection film to the first right angle surface 3e, and then transmitted to the photoelectricity by the first right angle surface 3e.
  • the transceiver array is connected to receive.
  • the optical signal is sent to the first right-angled surface 3e of the right-angled triangular prism, and the optical signal is transmitted through the first right-angled surface 3e, and enters the rectangular prism to continue transmission and arrive.
  • the optical signal is reflected by the inclined surface 3f to the second right-angled surface 3g, and then transmitted to the multi-core optical fiber array 1 by the second right-angled surface 3g.
  • Embodiment 3 provides an optical assembly for vertically coupling with an optoelectronic transceiver array, the optical assembly including an arrayed waveguide grating chip 5 and a reflective prism 3.
  • the reflecting prism 3 is a right-angled trapezoidal prism, and includes an upper bottom surface 3c, a lower bottom surface 3a, a right-angled waist surface 3d, and a diagonal waist surface 3b.
  • the angle between the inclined waist surface 3b and the lower bottom surface 3a is 41° to 45°, and the right angle waist
  • the height of the face 3d is equal to the height of the arrayed waveguide grating chip 5, and is connected to the arrayed waveguide grating chip 5 by the adhesive 2, and the right-angled trapezoidal prism can be placed upright or inverted In the embodiment, the right-angled trapezoidal prism is arranged upside down.
  • Adhesive 2 is a shadowless glue such as an acrylate.
  • the arrayed waveguide grating chip 5 can be connected to the single-core optical fiber array 4, the adhesive 2, the reflective prism 3, the arrayed waveguide grating chip 5, and the single-core optical fiber array 4 have the same refractive index, so that the optical signals can be sequentially
  • the inside of the single-core optical fiber array 4, the arrayed waveguide grating chip 5, the adhesive 2, and the reflective prism 3 propagate in a straight line.
  • the outer surface of the inclined waist surface 3b is provided with a total reflection film.
  • the photoelectric transceiver array When the right-angled trapezoidal prism is disposed upright, the photoelectric transceiver array is placed directly under the bottom surface 3a of the right-angled trapezoidal prism; when the right-angled trapezoidal prism is placed upside down, the photoelectric transceiver array is placed directly above the bottom surface 3a of the right-angled trapezoidal prism (see Figure 3).
  • Optical signals from the arrayed waveguide grating chip 5 (when the arrayed waveguide grating chip 5 is connected to the single-core optical fiber array 4, the optical signals are transmitted from the single-core optical fiber array 4 to the arrayed waveguide grating chip 5), and enter the right angle through the adhesive 2
  • the inside of the trapezoidal prism continues to be transmitted, and after reaching the inclined waist surface 3b, it is reflected by the inclined waist surface 3b to the lower bottom surface 3a, and then reflected by the lower bottom surface 3a to the photoelectric transmitting and receiving array.
  • the optical signal After the optical signal reaches the oblique waist surface 3b, if an optical signal is transmitted from the oblique waist surface 3b to the total reflection film, the light signal transmitted by the oblique waist surface 3b is reflected by the total reflection film to the lower bottom surface 3a, and then transmitted by the lower bottom surface 3a.
  • the optoelectronic transceiver array To the optoelectronic transceiver array to receive.
  • the optical signal is sent to the lower bottom surface 3a of the right-angled trapezoidal prism, and the optical signal is transmitted by the lower bottom surface 3a, and enters the rectangular trapezoidal prism to continue transmission to the oblique waist surface 3b.
  • the optical signal is reflected by the oblique waist surface 3b to the right-angled waist surface 3d, and then transmitted to the arrayed waveguide grating chip 5 by the right-angled waist surface 3d (when the arrayed waveguide grating chip 5 is connected with the single-core optical fiber array 4, the arrayed waveguide grating chip 5 Again The optical signal is transmitted to the single core fiber array 4).
  • the optical signal When the optical signal reaches the oblique waist surface 3b, if the optical signal is transmitted from the oblique waist surface 3b to the total reflection film, the light signal transmitted by the oblique waist surface 3b is reflected by the total reflection film to the right angle waist surface 3d, and then the right angle waist surface 3d is transmitted to the arrayed waveguide grating chip 5.
  • Embodiment 4 provides an optical assembly for vertically coupling with an optoelectronic transceiver array, the optical assembly including an arrayed waveguide grating chip 5 and a reflective prism 3.
  • the reflecting prism 3 is a right-angled triangular prism, and includes a first right-angled surface 3e, a second right-angled surface 3g, and a sloped surface 3f.
  • the angle between the first right-angled surface 3e and the inclined surface 3f is 41° to 45°, and the second right-angled surface 3g
  • the height of the arrayed waveguide grating chip 5 is equal to the height of the arrayed waveguide grating chip 5, and is connected to the arrayed waveguide grating chip 5 by the adhesive 2, and the first right-angled surface 3e may be located above the inclined surface 3f or above the inclined surface 3f. In this embodiment, The first straight surface 3e is located above the inclined surface 3f.
  • Adhesive 2 is a shadowless glue such as an acrylate.
  • the arrayed waveguide grating chip 5 can be connected to the single-core optical fiber array 4, the adhesive 2, the reflective prism 3, the arrayed waveguide grating chip 5, and the single-core optical fiber array 4 have the same refractive index, so that the optical signals can be sequentially
  • the inside of the single-core optical fiber array 4, the arrayed waveguide grating chip 5, the adhesive 2, and the reflective prism 3 propagate in a straight line.
  • the outer surface of the slope 3f is provided with a total reflection film.
  • the photoelectric transceiver array When the first right-angled surface 3e of the right-angled triangular prism is located above the inclined surface 3f, the photoelectric transceiver array is placed directly above the first right-angled surface 3e (see FIG. 4); when the first right-angled surface 3e of the right-angled triangular prism is located When the slope 3f is below, the photoelectric transceiver array is placed directly below the first right angle surface 3e; the optical signal from the arrayed waveguide grating chip 5 No.
  • the optical signal is transmitted from the single-core optical fiber array 4 to the arrayed waveguide grating chip 5), and after passing through the adhesive 2, the second right angle enters the right-angled triangular prism and continues. After the slanting surface 3f is reached, the optical signal is reflected by the slope 3f to the first right angle surface 3e, and then transmitted by the first right angle surface 3e to the photoelectric transceiver array for reception.
  • the optical signal After the optical signal reaches the slope 3f, if the optical signal is transmitted from the slope 3f to the total reflection film, the light signal transmitted by the slope 3f is reflected by the total reflection film to the first right angle surface 3e, and then transmitted to the photoelectricity by the first right angle surface 3e.
  • the transceiver array is connected to receive.
  • the optical signal is sent to the first right-angled surface 3e of the right-angled triangular prism, and the optical signal is transmitted by the first right-angled surface 3e, and continues to be transmitted into the right-angled triangular prism to arrive.
  • the optical signal is reflected by the inclined surface 3f to the second right angle surface 3g, and then transmitted to the arrayed waveguide grating chip 5 by the second right angle surface 3g (when the arrayed waveguide grating chip 5 is connected with the single core optical fiber array 4, the arrayed waveguide grating The chip 5 then transmits the optical signal to the single core fiber array 4).
  • the optical signal After the optical signal reaches the slope 3f, if the optical signal is transmitted from the slope 3f to the total reflection film, the light signal transmitted by the slope 3f is reflected by the total reflection film to the second right angle surface 3g, and then transmitted to the array by the second right angle surface 3g.
  • Waveguide grating chip 5 After the optical signal reaches the slope 3f, if the optical signal is transmitted from the slope 3f to the total reflection film, the light signal transmitted by the slope 3f is reflected by the total reflection film to the second right angle surface 3g, and then transmitted to the array by the second right angle surface 3g.
  • Waveguide grating chip 5 After the optical signal reaches the slope 3f, if the optical signal is transmitted from the slope 3f to the total reflection film, the light signal transmitted by the slope 3f is reflected by the total reflection film to the second right angle surface 3g, and then transmitted to the array by the second right angle surface 3g. Waveguide grating chip 5.
  • an embodiment of the present invention further provides a method for fabricating an optical component for vertical coupling with an optoelectronic transceiver array, comprising the following steps:
  • S1 Select a right-angled trapezoidal prism or a right-angled triangular prism as the reflective prism 3, and go to S2.
  • S2 Grinding or wire drawing the inclined waist surface 3b of the right-angled trapezoidal prism or the inclined surface 3f of the right-angled triangular prism, and going to S3.
  • S5 Put the optical component into the environmental test box for environmental test and optical performance test. If the environmental test or the optical test fails, the optical component is a non-conforming product, and the process ends. Otherwise, go to S6.

Abstract

L'invention concerne un élément optique pour couplage vertical avec un réseau d'émetteurs-récepteurs photoélectriques et un procédé de fabrication, qui concernent le domaine des communications par fibre optique. L'élément optique comprend un appareil de transmission de signal optique et un prisme réflecteur (3), l'appareil de transmission de signal optique étant un réseau de fibres optiques à puces multiples (1) ou une puce de réseau de diffraction à guide d'ondes en réseau (5), le prisme réflecteur (3) étant un prisme en forme de trapèze rectangle ou un prisme en forme de triangle rectangle, et l'appareil de transmission de signal optique étant relié au prisme réflecteur (3) au moyen d'un adhésif (2). La réalisation d'une conversion d'angle de trajet optique au moyen du prisme réflecteur (3) peut éviter la destruction d'une face d'extrémité de sortie de la puce de réseau de diffraction à guide d'ondes en réseau (5) ou d'une face d'extrémité de sortie du réseau de fibres optiques (1), et éviter les problèmes selon lesquels une rupture de fibre optique est provoquée lorsqu'une fibre optique est polie et que la fibre optique polie est trop facilement cassée pour une utilisation dans une utilisation ultérieure. L'élément optique est facile à produire à grande échelle et présente un plus grand taux d'acceptabilité. Le procédé peut efficacement améliorer l'efficacité du couplage vertical entre l'élément optique et le réseau d'émetteurs-récepteurs photoélectriques.
PCT/CN2016/076140 2015-06-12 2016-03-11 Élément optique pour couplage vertical avec un réseau d'émetteurs-récepteurs photoélectriques et procédé de fabrication WO2016197642A1 (fr)

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CN201510324004.XA CN104865653B (zh) 2015-06-12 2015-06-12 用于与光电收发阵列垂直耦合的光学组件及制作方法

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