WO2020029726A1 - 光器件及光模块 - Google Patents
光器件及光模块 Download PDFInfo
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- WO2020029726A1 WO2020029726A1 PCT/CN2019/094676 CN2019094676W WO2020029726A1 WO 2020029726 A1 WO2020029726 A1 WO 2020029726A1 CN 2019094676 W CN2019094676 W CN 2019094676W WO 2020029726 A1 WO2020029726 A1 WO 2020029726A1
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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
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/4277—Protection against electromagnetic interference [EMI], e.g. shielding means
Definitions
- the present disclosure relates to the technical field of optical fiber communication, and in particular, to an optical device and an optical module having the same.
- an optical module needs to be used to convert an optical signal into an electrical signal, or to convert an electrical signal into an optical signal.
- the present disclosure provides an optical device and an optical module capable of preventing leakage of electromagnetic waves.
- An embodiment of the present disclosure relates to an optical device, including:
- Optical fiber interface tube base; electromagnetic shielding member located between the inner end of the optical fiber interface and the outer end of the tube base; an opening portion located on the outer end of the optical fiber interface and configured to access an optical fiber; a cavity Is located on the inner end of the socket and is configured to receive a photoelectric converter; and a light transmitting hole is located in the electromagnetic shielding member and is configured to enable an optical signal to pass through.
- An embodiment of the present disclosure relates to an optical module, including:
- a metal casing and an optical device the optical device being disposed inside the metal casing;
- the optical device includes: an optical fiber interface; a tube base; and an electromagnetic shielding member located at an inner end of the optical fiber interface and an outer side of the tube base Between the ends; the opening is located on the outer end of the optical fiber interface and is configured to access the optical fiber; the cavity is located on the inner end of the socket and is configured to receive the photoelectric converter;
- the electromagnetic shield is configured to be able to pass an optical signal.
- FIG. 1 shows a schematic diagram of an overall structure of an optical device according to some embodiments
- FIG. 2 illustrates a schematic exploded structure of an optical device according to some embodiments
- FIG. 3 shows a schematic cross-sectional structure of an optical device according to some embodiments
- FIG. 4 illustrates an exploded structure diagram of an optical module according to some embodiments.
- SYMBOLS 10 optical fiber interface; 11, opening; 12, positioning post; 20, electromagnetic shield; 21, light transmission hole; 22, positioning hole; 30, pipe seat; 31, positioning cavity; 32, light collecting member 33, chamber; 40, photoelectric converter; 41, base; 42, tube cap; 43, pin; 100, light receiving device; 200, metal shell; 300, control circuit board.
- first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "a plurality" is two or more, unless specifically defined otherwise.
- an optical module is provided with an optical device and a photoelectric converter, wherein the optical device is connected between the optical fiber and the photoelectric converter, and is used to input the optical signal in the optical fiber into the photoelectric converter, or the Light is output into the fiber. Since the photoelectric converter generates electromagnetic waves in the working state, and there is no electromagnetic shielding structure in the optical device, the electromagnetic wave generated by the photoelectric converter is easily leaked out through the optical device, which will cause electromagnetic wave signal interference to external electronic devices. As a result, the optical module cannot meet the requirements of the electromagnetic shielding index.
- FIG. 1 to FIG. 3 include: an optical fiber interface 10 and a tube base 30, and an inner end of the optical fiber interface 10 (that is, an end connected to the tube base 30).
- An electromagnetic shield 20 is fixedly attached to the outer end of the tube base 30 (that is, the end connected to the optical fiber interface 10) by an adhesive method.
- An outer end of the optical fiber interface 10 is provided with an optical fiber.
- the opening portion 11 is provided with a cavity 33 for accommodating the photoelectric converter 40 on the inner end of the socket 30, and the electromagnetic shielding member 20 is provided with a light transmitting hole 21 through which a light signal passes.
- the end of the external optical fiber is connected to the optical fiber interface 10 through the opening 11, and the optical signal emitted from the optical fiber will pass through the light-transmitting hole 21 in the electromagnetic shield 20 and enter the tube seat.
- the photoelectric converter 40 in the chamber 33 of 30 the photoelectric converter 40 receives the optical signal, converts the optical signal into an electric signal, and outputs the electric signal to the control circuit.
- the outer end of the socket 30 is generally made of a plastic material with better light transmission.
- the material has a low barrier to electromagnetic waves. Therefore, in some embodiments, the electromagnetic waves generated by the photoelectric converter 40 will be emitted from the outer end of the socket 30 without blocking, and these electromagnetic waves will affect various types of optical modules. Electronic devices cause electromagnetic wave interference, which affects the accuracy of electronic devices to a certain extent.
- an electromagnetic shield 20 is provided between the optical fiber interface 10 and the socket 30, which effectively prevents electromagnetic waves generated by the photoelectric converter 40 from being emitted to various electrons in the optical module through the outer end of the socket 30. Device.
- the electromagnetic waves generated between the multiple photoelectric converters 40 may also interfere with each other.
- an electromagnetic shield 20 is provided between the optical fiber interface 10 and the socket 30.
- other interference signals can also be prevented from entering the cavity 33.
- it causes interference to the photoelectric converter 40, which effectively reduces electromagnetic wave interference to other electronic devices, so that the optical module can meet the requirements of the electromagnetic shielding index.
- a convex positioning post 12 is provided on the inner end of the optical fiber interface 10
- a positioning hole 22 is provided on the electromagnetic shielding member 20, and a positioning cavity is provided on the outer end of the socket 30. 31.
- the positioning post 12 is inserted into the positioning cavity 31 through the positioning hole 22.
- the positioning of the optical fiber interface 10, the electromagnetic shielding member 20, and the socket 30 can be achieved through the cooperation of the positioning post 12, the positioning hole 22, and the positioning cavity 31. Since the present disclosure is one It is a kind of optical device, so accurate alignment between various parts will have a great impact on the optical path, and then affect the performance of the optical device.
- the present disclosure locates the installation positions between the optical fiber interface 10, the electromagnetic shielding member 20, and the socket 30 through the positioning post 12, the positioning hole 22, and the positioning cavity 31.
- the user only needs to dock the three. Yes, no optical calibration is required during assembly, and assembly is simple, convenient and quick.
- a positioning cavity is provided on the inner end of the optical fiber interface 10
- a positioning hole 22 is provided on the electromagnetic shielding member 20
- a convex positioning post is provided on the outer end of the socket 30, The positioning post is inserted into the positioning cavity through the positioning hole.
- the electromagnetic shielding member 20 completely covers the end surface of the outer end of the socket 30, which can effectively prevent electromagnetic waves from entering and exiting from the outer end of the socket 30.
- the area of the orthographic projection of the electromagnetic shield 20 in the optical signal transmission direction is greater than or equal to the area of the orthographic projection of the socket 30 in the optical signal transmission direction.
- the socket 30 is made of a light-transmissive plastic material
- the electromagnetic shielding member 20 is made of a metal material.
- the electromagnetic shielding member 20 is a metal chuck.
- a light collecting member 32 is formed on the bottom of the cavity 33, and the center of the light collecting member 32 is aligned with the light transmitting hole 21 in the electromagnetic shielding member 20.
- the light-condensing member 32 is integrally formed with the stem 30.
- the light-condensing member 32 is disposed on a rear end surface of the outer end of the stem 30.
- an optical module which includes a metal case 200 and the optical device 100 described above, and the optical device 100 is disposed inside the metal case 200.
- the metal case 200 includes an upper case and a lower case, and the optical device 100 is packaged in the metal case 200 through the cooperation of the upper and lower cases.
- an edge of the electromagnetic shielding member 20 is connected to an inner wall of the metal casing 200 to form a sealed shielding space, and the photoelectric converter 40 and the control circuit board 300 connected to the photoelectric converter 40 are disposed at In the sealed shielded space, the electromagnetic waves generated by the photoelectric converter 40 and its control circuit board 300 will not generate electromagnetic wave interference signals to the electronic devices outside the metal case 200, and the external electromagnetic wave signals will not convert the photoelectricity.
- the controller 40 and its control circuit board 300 generate interference.
- the number of the optical devices 100 is two or more, so that the optical module can process the optical signals input / output by multiple optical fibers at the same time.
- a photoelectric converter is provided in the cavity 33 of the optical device 100.
- Each optical device 100 corresponds to one photoelectric converter 40.
- the photoelectric converter 40 includes: a base 41 which is sleeved in the cavity 33, and a tube cap 42 is fastened to the base 41, and a transparent window is provided in the tube cap 42.
- a photoelectric chip is provided on a side of the light transmission window near the base 41, and the photoelectric chip is disposed in a cavity surrounded by the base 41 and the tube cap 42.
- the base 41 has a pin 43, and the pin 43 starts from The outer side of the base 41 penetrates to the inner side of the base 41, the outer end of the pin 43 is connected to the optoelectronic chip, and the inner end is connected to the control circuit board 300 through a wire; wherein the optoelectronic chip includes: Light receiving chip or light transmitting chip.
- the light-condensing member 32 in the cavity 33 is aligned with the photoelectric chip, so that the light signal emitted through the light-condensing member 32 can pass through the light transmission window and enter the light-receiving chip; or, The light signal emitted by the light-emitting chip can pass through the light transmission window and be incident on the light-concentrating member 32.
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- Optical Couplings Of Light Guides (AREA)
Abstract
一种光器件及光模块,光器件包括:光纤接口(10);管座(30);电磁屏蔽件(20),位于光纤接口(10)的内侧端与管座(30)的外侧端之间;开口部(11),位于光纤接口(10)的外侧端上、配置为接入光纤;腔室(33),位于管座(30)的内侧端上、配置为容置光电转换器(40);和透光孔(21),位于电磁屏蔽件(20)中、配置为能够使光信号通过。
Description
相关申请的交叉引用
本申请要求于2018年8月6日提交的、申请号为2018108858767的中国专利申请的优先权,该申请的全文以引用的方式并入本文中。
本公开涉及光纤通信技术领域,具体涉及一种光器件以及一种具有该光器件的光模块。
在光通信的过程中,主要经过三个步骤,即,首先将电信号转换为光信号,接着利用光纤对光信号进行传输,最后将光纤上的光信号重新转换为电信号。在上述光通信的过程中,需要利用光模块将光信号转换为电信号,或将电信号转换为光信号。
发明内容
本公开提供一种能防止电磁波泄露的光器件及光模块。
本公开实施方式涉及一种光器件,包括:
光纤接口;管座;电磁屏蔽件,位于所述光纤接口的内侧端与所述管座的外侧端之间;开口部,位于所述光纤接口的外侧端上、配置为接入光纤;腔室,位于所述管座的内侧端上、配置为容置光电转换器;和透光孔,位于所述电磁屏蔽件中、配置为能够使光信号通过。
本公开实施方式涉及一种光模块,包括:
金属外壳以及光器件,所述光器件设置于所述金属外壳的内部;所述光器件包括:光纤接口;管座;电磁屏蔽件,位于所述光纤接口的内侧端与所述管座的外侧端之间;开口部,位于所述光纤接口的外侧端上、配置为接入光纤;腔室,位于所述管座的内侧端上、配置为容置光电转换器;和透光孔,位于所述电磁屏蔽件中、配置为能够使光信号通过。
为了描述方便,本公开实施方式将结合下述的附图进行详细描述。
图1示出了根据一些实施方式的光器件的整体结构示意图;
图2示出了根据一些实施方式的光器件的分解结构示意图;
图3示出了根据一些实施方式的光器件的剖面结构示意图;
图4示出了根据一些实施方式的光模块的分解结构示意图。
标号说明:10、光纤接口;11、开口部;12、定位柱;20、电磁屏蔽件;21、透光孔;22、定位孔;30、管座;31、定位腔;32、聚光件;33、腔室;40、光电转换器;41、底座;42、管帽;43、引脚;100、光接收器件;200、金属外壳;300、控制电路板。
为了使本公开的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本公开进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本公开,并不用于限定本公开。
在本公开的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本公开和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本公开的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本公开的描述中,“多个”的含义是两个或两个以上,除非另有明确具体的限定。
在本公开的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接。可以是机械连接,也可以是电连接。可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普 通技术人员而言,可以根据具体情况理解上述术语在本公开中的具体含义。
通常,光模块中设有光器件和光电转化器,其中,光器件连接于光纤与光电转化器之间,用于将光纤中的光信号输入至光电转化器中,或者将光电转化器发出的光输出至光纤中。由于光电转化器在工作状态下会产生电磁波,且光器件中并没有电磁屏蔽结构,故光电转化器所产生的电磁波很容易通过光器件泄露出去,这将对外部的电子器件造成电磁波信号干扰,导致光模块不能达到电磁屏蔽指标的要求。
下面对本公开的一种光器件进行具体描述,请参阅图1至图3,其包括:光纤接口10和管座30,所述光纤接口10的内侧端(即,与管座30连接的一端)与所述管座30的外侧端(即,与光纤接口10连接的一端)之间通过粘贴的方式固定设置有电磁屏蔽件20,所述光纤接口10的外侧端上设有用于接入光纤的开口部11,所述管座30的内侧端上设有用于容置光电转换器40的腔室33,所述电磁屏蔽件20中设有供光信号通过的透光孔21。外接光纤的末端通过该开口部11接入至所述光纤接口10中,从该光纤中所发出的光信号将穿过所述电磁屏蔽件20中的透光孔21进入到设置于该管座30的腔室33内的光电转换器40中,光电转换器40接收到光信号后,将该光信号转换为电信号,再输出至控制电路中。
为了使光纤所输出的光信号能从管座30的外侧端进入到管座30的腔室33中,该管座30的外侧端一般由透光性较好的塑料材料构成,然而,由于塑料材料对电磁波的阻挡性较低,故在一些实施例中,光电转换器40所产生的电磁波均会毫无阻挡地从管座30的外侧端射出,进而这些电磁波会对光模块中的各种电子器件造成电磁波干扰,一定程度地影响到电子器件的准确性。在本公开中,在光纤接口10与管座30之间设置有电磁屏蔽件20,其有效地防止光电转换器40所产生的电磁波通过管座30的外侧端发射到光模块中的各种电子器件中。同时,由于在一个光模块中,会具有多个光器件和多个光电转换器40,在一些实施例中,在多个光电转换器40之间所产生电磁波也会发生相互干扰的现象。在本公开中,在光纤接口10与管座30之间设置有电磁屏蔽件20除了能防止光电转换器40所产生的电磁波对其他电子器件产生干扰,也能防止其他干扰信号进入到腔室33中,对光电转换器40造成干扰,这有效降低了电磁波对其他电子器件的电磁波干扰,使得光模块能符合的电磁屏蔽指标的要求。
在本实施例中,所述光纤接口10的内侧端上设有凸起的定位柱12,所述电磁屏蔽件20上设有定位孔22,所述管座30的外侧端上设有定位腔31,所述定位柱12穿过所述定位孔22接入至所述定位腔31中。在本实施例中,通过定位柱12、定位孔22和定 位腔31三者的相互配合,能实现光纤接口10、电磁屏蔽件20和管座30三者之间的定位,由于本公开是一种光器件,故各零件之间的准确对位对光路会有较大的影响,进而影响着光器件的性能。本公开通过定位柱12、定位孔22和定位腔31对光纤接口10、电磁屏蔽件20和管座30三者之间的安装位置进行定位,用户在装配时,仅需将三者进行对接即可,装配时无需再进行光学校准,装配简单方便快捷。
作为另一些实施例,所述光纤接口10的内侧端上设有定位腔,所述电磁屏蔽件20上设有定位孔22,所述管座30的外侧端上设有凸起的定位柱,所述定位柱穿过所述定位孔接入至所述定位腔中。
在本实施例中,所述电磁屏蔽件20完整地覆盖于所述管座30的外侧端的端面之外,其能有效地防止电磁波从管座30的外侧端进出。在一些实施例中,所述电磁屏蔽件20在光信号传输方向上的正投影的面积大于或等于所述管座30在光信号传输方向上的正投影的面积。
在本实施例中,所述管座30由可透光的塑料材料构成,所述电磁屏蔽件20由金属材料构成;在一些实施例中,所述电磁屏蔽件20为金属卡盘。
在本实施例中,所述腔室33的腔底上形成有聚光件32,所述聚光件32的中心与所述电磁屏蔽件20中的透光孔21相对准。所述聚光件32与该管座30一体成型,所述聚光件32设置于管座30的外侧端的后端面上,当光纤接口10中的光纤所发射出来的光信号通过透光孔21进入至管座30的外侧端时,该光信号通过管座30上的聚光件32聚光,所述聚光件32的焦点设在该光电转换器40的受光面上,使得所输入的光信号能更好地输入至光电转换器40中。
请参阅图4,本申请的一些实施方式涉及一种光模块,其包括:金属外壳200以及如上所述的光器件100,所述光器件100设置于所述金属外壳200的内部。该金属外壳200包括:上壳体和下壳体,其通过上、下壳体的相互配合将该光器件100封装于金属外壳200中。
在本实施例中,所述电磁屏蔽件20的边缘与所述金属外壳200的内壁相接,以围成一个密封的屏蔽空间,而光电转换器40以及与其相连接的控制电路板300设置在该密封的屏蔽空间中,该光电转换器40及其控制电路板300中所产生的电磁波不会对金属外壳200外部的电子器件产生电磁波干扰信号,同时,外界电磁波信号也不会对该光电转换器40及其控制电路板300产生干扰。
在本实施例中,所述光器件100的数量为两个以上,使得光模块能同时对多根光纤所输入/输出的光信号进行处理。
在本实施例中,所述光器件100的腔室33中设有光电转换器。每个光器件100均与一个光电转换器40相对应。所述光电转换器40包括:底座41,所述底座41套接于所述腔室33中,且该底座41上扣合有管帽42,所述管帽42中设有透光窗,该透光窗靠近底座41的一侧设有光电芯片,所述光电芯片设置于底座41与管帽42所围成的腔体中;所述底座41上有引脚43,所述引脚43从该底座41的外侧穿出到该底座41的内侧,所述引脚43的外端与光电芯片相接,且其内端通过导线与控制电路板300相连接;其中,所述光电芯片包括:光接收芯片或光发射芯片。在本实施例中,所述腔室33中的聚光件32与光电芯片相对准,这使得经由聚光件32射出的光信号能通过透光窗后入射到该光接收芯片中;或者,光发射芯片所发出的光信号能通过透光窗后入射到该聚光件32中。
在本说明书的描述中,参考术语“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”等的描述意指结合实施方式或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施方式或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
以上所述仅为本公开的较佳实施例而已,并不用以限制本公开,凡在本公开的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本公开的保护范围之内。
Claims (14)
- 一种光器件,包括:光纤接口;管座;电磁屏蔽件,位于所述光纤接口的内侧端与所述管座的外侧端之间;开口部,位于所述光纤接口的外侧端上、配置为接入光纤;腔室,位于所述管座的内侧端上、配置为容置光电转换器;和透光孔,位于所述电磁屏蔽件中、配置为能够使光信号通过。
- 根据权利要求1所述的光器件,还包括:定位柱,为位于所述光纤接口的内侧端上的凸起;定位孔,位于所述电磁屏蔽件上;和定位腔,位于所述管座的外侧端上;其中,所述定位柱穿过所述定位孔接入至所述定位腔中。
- 根据权利要求1所述的光器件,还包括:定位腔,位于所述光纤接口的内侧端上;定位孔,位于所述电磁屏蔽件上;和定位柱,为位于所述管座的外侧端上的凸起;其中,所述定位柱穿过所述定位孔接入至所述定位腔中。
- 根据权利要求1所述的光器件,其中,所述电磁屏蔽件完整地覆盖于所述管座的外侧端的端面之外。
- 根据权利要求1所述的光器件,其中,所述管座包括能够透光的塑料材料,所述电磁屏蔽件包括金属材料。
- 根据权利要求1所述的光器件,还包括:聚光件,位于所述腔室的腔底上,其中,所述聚光件的中心与所述电磁屏蔽件中的透光孔相对准。
- 一种光模块,包括:金属外壳以及光器件,所述光器件设置于所述金属外壳的内部;所述光器件包括:光纤接口;管座;电磁屏蔽件,位于所述光纤接口的内侧端与所述管座的外侧端之间;开口部,位于所述光纤接口的外侧端上、配置为接入光纤;腔室,位于所述管座的内侧端上、配置为容置光电转换器;和透光孔,位于所述电磁屏蔽件中、配置为能够使光信号通过。
- 根据权利要求7所述的光模块,还包括:定位柱,为位于所述光纤接口的内侧端上的凸起;定位孔,位于所述电磁屏蔽件上;和定位腔,位于所述管座的外侧端上;其中,所述定位柱穿过所述定位孔接入至所述定位腔中。
- 根据权利要求7所述的光模块,还包括:定位腔,位于所述光纤接口的内侧端上;定位孔,位于所述电磁屏蔽件上;和定位柱,为位于所述管座的外侧端上的凸起;其中,所述定位柱穿过所述定位孔接入至所述定位腔中。
- 根据权利要求7所述的光模块,其中,所述电磁屏蔽件完整地覆盖于所述管座的外侧端的端面之外。
- 根据权利要求7所述的光模块,其中,所述管座的材料包括能够透光的塑料材料,所述电磁屏蔽件的材料包括金属材料。
- 根据权利要求7所述的光模块,还包括:聚光件,位于所述腔室的腔底上,其中,所述聚光件的中心与所述电磁屏蔽件中的透光孔相对准。
- 根据权利要求7所述的光模块,所述电磁屏蔽件的边缘与所述金属外壳的内壁相接。
- 根据权利要求7所述的光模块,所述光器件的数量为两个以上。
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