Single-fiber two-way transmission packaging device

Abstract

The embodiment of the utility model provides a single-fiber two-way transmission packaging device which comprises a transmitting chip, a receiving chip and an optical path conversion lens, the optical path conversion lens comprises a first lens and a second lens which are connected with each other, and the single-fiber two-way transmission packaging device is provided with a receiving and transmitting end matched with an optical fiber; the first lens transmits emitted light of the emitting chip to the second lens, the second lens reflects the emitted light to the receiving and transmitting end, and the receiving and transmitting end transmits the emitted light to the optical fiber to form an emitting light path; the receiving and transmitting end transmits receiving light passing through the optical fiber to the second lens, and the second lens transmits the receiving light to the receiving chip to form a receiving light path. The structure of the single-fiber two-way transmission packaging device can be simplified, the size of the single-fiber two-way transmission packaging device is reduced, and the design cost of the single-fiber two-way transmission packaging device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber transceivers, in particular to a single-fiber bidirectional transmission packaging device. Background Art

[0002] At present, the structure of the optical transceiver module includes a transmitting module and a receiving module that are assembled separately. However, the separate assembly of the transmitting module and the receiving module results in a larger overall structure size and a more complicated production process. Moreover, the transmitting module and the receiving module require two optical fiber interfaces for transmission and reception, respectively, resulting in a complex structure, larger size, and higher operating cost for the optical transceiver module. Utility Model Content

[0003] In view of the above problems, embodiments of the present utility model are proposed to provide a single-fiber bidirectional transmission packaging device that overcomes the above problems or at least partially solves the above problems.

[0004] In order to solve the above problems, the embodiment of the utility model discloses a single-fiber bidirectional transmission packaging device, including: a transmitting chip, a receiving chip and an optical path conversion lens, the optical path conversion lens includes a first lens and a second lens connected to each other, and the single-fiber bidirectional transmission packaging device has a transmitting and receiving end that cooperates with the optical fiber; wherein,

[0005] The first lens transmits the emission light of the emission chip to the second lens, the second lens reflects the emission light to the transceiver, and the transceiver transmits the emission light to the optical fiber to form an emission light path;

[0006] The transceiver end transmits the received light passing through the optical fiber to the second lens, and the second lens transmits the received light to the receiving chip to form a receiving light path.

[0007] Optionally, the first lens is disposed between the transmitting chip and the second lens;

[0008] There is a first angle between the light-emitting surface of the transmitting chip and the first lens, and there is a second angle between the second lens and the first lens. The emission light emitted from the light-emitting surface of the transmitting chip is transmitted from the first lens to the second lens, and then reflected from the second lens to the transceiver end.

[0009] Optionally, the single-fiber bidirectional transmission packaging device includes a power detection chip;

[0010] The power detection chip and the transmitting chip are arranged on the same side of the first lens, and the emission light emitted from the transmitting chip is reflected by the first lens to the power detection chip to form a power detection optical path.

[0011] Optionally, the first lens includes a first lens body and a beam splitting film covering the first lens body, the beam splitting film is located on the side of the first lens body facing the emitting chip, the beam splitting film is used to transmit a portion of the emitted light to the second lens and reflect another portion of the emitted light to the power detection chip.

[0012] Optionally, the beam splitting film is a plated film or a coated film.

[0013] Optionally, the first angle and the second angle are acute angles.

[0014] Optionally, the second lens is arranged between the transceiver and the receiving chip;

[0015] There is a third angle between the second lens and the light emitting surface of the transceiver end, and there is a fourth angle between the second lens and the light incident surface of the receiving chip. The received light emitted from the light emitting surface of the transceiver end can be transmitted to the receiving chip through the second lens.

[0016] Optionally, the second lens includes a second lens body and a first filter film covering the second lens body, the first filter film is located on the side of the second lens body facing the transceiver end and the first lens, and the first filter film is used to transmit the emission light transmitted by the first lens to the transceiver end, or, to transmit the received light emitted by the transceiver end to the receiving chip.

[0017] Optionally, a second filter film is provided between the second lens body and the receiving chip, and the second filter film is used to transmit light of a preset wavelength in the received light to the receiving chip and filter out light other than the preset wavelength.

[0018] Optionally, the first filter film and the second filter film are plated films or coated films.

[0019] Optionally, the third angle and the fourth angle are acute angles.

[0020] Optionally, the optical path conversion lens further includes a third lens;

[0021] One end of the third lens is connected to the first lens, and the other end is connected to the second lens. The third lens, the second lens and the first lens are connected in sequence to form a hollow triangular prism structure;

[0022] Among them, the reflected light reflected from the second lens is transmitted to the transceiver end through the third lens, and the received light incident from the transceiver end is transmitted to the second lens through the third lens.

[0023] Optionally, the optical path conversion lens further includes a fourth lens;

[0024] The fourth lens is connected to the third lens, the second lens and the first lens respectively.

[0025] Optionally, the single-fiber bidirectional transmission packaging device further includes: a base and a bracket arranged on the base;

[0026] The bracket is connected to the base and encloses the base to form a containing space, and the optical path conversion lens, the transmitting chip and the receiving chip are all arranged in the containing space;

[0027] Wherein, the optical path conversion lens and the transmitting chip are connected to the bracket, and the receiving chip is connected to the base.

[0028] Optionally, the bracket includes a first support plate and a second support plate arranged at an angle;

[0029] The first support plate and the second support plate both extend along the base toward the transceiver end;

[0030] The optical path conversion lens is connected to the first supporting plate;

[0031] The transmitting chip is connected to the second supporting board.

[0032] Optionally, a first heat dissipation pad is provided on the bracket, and a second heat dissipation pad is provided on the base;

[0033] The transmitting chip is connected to the bracket through the first heat dissipation pad;

[0034] The receiving chip is connected to the base through the second heat dissipation pad.

[0035] Optionally, the single-fiber bidirectional transmission packaging device further includes a tube cap and a focusing lens;

[0036] The tube cap covers the bracket and is connected to the base;

[0037] A lens mounting hole is provided on the tube cap at a position corresponding to the transceiver end;

[0038] The focusing lens is installed in the lens installation hole, and the focusing lens is used to converge the emitted light to the optical fiber or converge the received light passing through the optical fiber to the second lens.

[0039] Optionally, the single-fiber bidirectional packaging device further includes an amplifier and a capacitor;

[0040] The amplifier is electrically connected to the receiving chip and the capacitor respectively.

[0041] Optionally, the single-fiber bidirectional transmission packaging device further includes an optical fiber connector;

[0042] The optical fiber connector is connected to the transceiver end and is used to encapsulate the optical fiber.

[0043] The utility model embodiment includes the following advantages:

[0044] In an embodiment of the utility model, the first lens transmits the emission light of the emission chip to the second lens, the second lens reflects the emission light to the transceiver end, and the transceiver end transmits the emission light to the optical fiber to form an emission light path; the transceiver end transmits the received light passing through the optical fiber to the second lens, and the second lens transmits the received light to the receiving chip to form a receiving light path, so that the single-fiber bidirectional transmission packaging device can both transmit light to the optical fiber and receive light emitted by the optical fiber, which is convenient for realizing single-fiber bidirectional transmission. Moreover, only the first lens and the second lens connected need to change the optical path, which can simplify the structure of the single-fiber bidirectional transmission packaging device, reduce the size of the single-fiber bidirectional transmission packaging device, and reduce the design cost of the single-fiber bidirectional transmission packaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a structural schematic diagram of a single-fiber bidirectional transmission packaging device of the utility model;

[0046] Figure 2 This is a schematic diagram of the appearance structure of a single-fiber bidirectional transmission packaging device of the utility model;

[0047] Figure 3 It is a light path diagram of the utility model;

[0048] Figure 4 This is a structural schematic diagram of an optical path conversion lens of the utility model;

[0049] Figure 5 It is a cross-sectional view of an optical fiber connector of the utility model;

[0050] Figure 6 This is a schematic diagram of the appearance structure of an optical fiber connector of the utility model;

[0051] Figure 7 It is a schematic diagram of the overall structure of a single-fiber bidirectional transmission packaging device of the utility model.

[0052] Description of reference numerals:

[0053] 11-base, 12-bracket, 121-first support plate, 122-second support plate, 13-accommodating space, 14-tube cap, 141-lens mounting hole, 142-connecting plate, 143-annular plate, 21-transmitting chip, 22-receiving chip, 23-power detection chip, 3-light path conversion lens, 31-first lens, 311-first lens body, 313-beam splitting film, 32-second lens, 321-second lens body, 323-first filter film, 324-second filter film, 33-third lens, 34-fourth lens, 41-first pin, 42-second pin, 43-third pin, 51-first heat dissipation pad, 52-second heat dissipation pad, 53-third heat dissipation pad, 61-amplifier, 62-capacitor, 7-optical fiber connector, 71-core seat, 72-core, 721-through hole, 73-core tube, 8-focusing lens. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0055] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] One of the core concepts of the embodiments of the utility model is to disclose a single-fiber bidirectional transmission packaging device, such as Figure 1 As shown, the single-fiber bidirectional transmission packaging device includes a transmitting chip 21, a receiving chip 22 and an optical path conversion lens 3, the optical path conversion lens 3 includes a first lens 31 and a second lens 32 connected to each other, and the single-fiber bidirectional transmission packaging device has a transceiver end that cooperates with the optical fiber; wherein the first lens 31 transmits the transmitted light of the transmitting chip 21 to the second lens 32, the second lens 32 reflects the transmitted light to the transceiver end, and the transceiver end transmits the reflected light to the optical fiber to form a transmitting light path; the transceiver end transmits the received light passing through the optical fiber to the second lens 32, and the second lens 32 transmits the received light to the receiving chip 22 to form a receiving light path.

[0059] In the embodiment of the utility model, the first lens 31 transmits the emission light of the emission chip 21 to the second lens 32, the second lens 32 reflects the emission light to the transceiver end, and the transceiver end transmits the emission light to the optical fiber, so as to form an emission light path; the transceiver end transmits the received light passing through the optical fiber to the second lens 32, and the second lens 32 transmits the received light to the receiving chip 22, so as to form a receiving light path. In this way, the single-fiber bidirectional transmission packaging device can both transmit light to the optical fiber and receive light emitted by the optical fiber, so as to realize single-fiber bidirectional transmission. Moreover, only the connected first lens 31 and second lens 32 need to change the optical path, so as to simplify the structure of the single-fiber bidirectional transmission packaging device, reduce the size of the single-fiber bidirectional transmission packaging device, and reduce the design cost of the single-fiber bidirectional transmission packaging device.

[0060] Specifically, the transmitting chip 21 can be a laser light-emitting chip, which can be integrated with a transmitter optical subassembly (TOSA), which can convert electrical signals into optical signals and transmit them; the receiving chip 22 can be integrated with a receiving optical sub-assembly (ROSA), which can convert received optical signals into electrical signals.

[0061] Specifically, the single-fiber bidirectional transmission packaging device has a transceiver end, and the transceiver end cooperates with the optical fiber to transmit light to the optical fiber or receive light transmitted by the optical fiber.

[0062] Specifically, the optical path conversion lens 3 includes a first lens 31 and a second lens 32 connected to each other.

[0063] Furthermore, if Figure 3 As shown, after the transmitting chip 21 emits the transmitting light, the reflected light is first transmitted through the first lens 31 and then enters the second lens 32, and then reflected to the transceiver end by the second lens 32, and then transmitted to the optical fiber, so as to form a transmitting light path. After the transceiver end receives the receiving light passing through the optical fiber, the receiving light can be transmitted to the receiving chip 22 through the second lens 32, so as to form a receiving light path. This allows a single optical fiber to realize a bidirectional transmission light path, one of which is a receiving light path and the other is a transmitting light path.

[0064] Optionally, the first lens 31 is arranged between the transmitting chip 21 and the second lens 32; there is a first angle between the light-emitting surface of the transmitting chip 21 and the first lens 31, and there is a second angle between the second lens 32 and the first lens 31. The emission light emitted from the light-emitting surface of the transmitting chip 21 is transmitted through the first lens 31 to the second lens 32, and then reflected by the second lens 32 to the transmitting and receiving end.

[0065] In the embodiment of the utility model, the first lens 31 is arranged between the emitting chip 21 and the second lens 32, and there is a first angle between the light-emitting surface of the emitting chip 21 and the first lens 31, and there is a second angle between the second lens 32 and the first lens 31, so that the first lens 31 can change the path of the emitted light, so that the emitted light of the emitting chip 21 can be smoothly incident on the second lens 32.

[0066] Specifically, there is a first angle between the light emitting surface of the emitting chip 21 and the first lens 31, that is, there is a first angle between the light emitting surface of the emitting chip 21 and the light incident surface of the first lens 31, so that the first lens 31 can be placed at an angle relative to the emitting chip 21, so that the first lens 31 can reflect or transmit the light emitted by the emitting chip 21.

[0067] Optionally, the first angle may be an acute angle, so that the emitted light may be incident on the first lens 31 obliquely, so that the first lens 31 can change the path of the emitted light.

[0068] Specifically, there is a second angle between the second lens 32 and the first lens 31, that is, there is a second angle between the light incident surface of the second lens 32 and the light exit surface of the first lens 31. Optionally, the second angle can be an acute angle, so that the emitted light can be incident on the second lens 32 obliquely to facilitate reflection by the second lens 32.

[0069] Optionally, the single-fiber bidirectional transmission packaging device also includes: a power detection chip 23; the power detection chip 23 and the transmitting chip 21 are arranged on the same side of the first lens 31, and the emission light emitted from the transmitting chip 21 is reflected by the first lens 31 to the power detection chip 23, forming a power detection optical path.

[0070] In an embodiment of the utility model, the power detection chip 23 and the transmitting chip 21 are arranged on the same side of the first lens 31. The first lens 31 can also reflect the light emitted by the transmitting chip 21 to the power detection chip 23, so that the power detection chip 23 can receive the optical signal and perform photoelectric conversion, which can increase the functionality of the single-fiber bidirectional transmission packaging device, so that the single-fiber bidirectional transmission packaging device can achieve small size and multi-function.

[0071] Specifically, the power detection chip 23 can be a receiving module that can convert the received optical signal into an electrical signal. The power detection chip 23 can be used for forward optical power detection and can be adjusted according to the monitoring result to reduce the impact of subsequent reflected light on optical performance.

[0072] Specifically, the first lens 31 may be placed at an angle relative to the power detection chip 23 , so that the first lens 31 can reflect light to the power detection chip 23 .

[0073] Specifically, the first lens 31 can reflect a small portion of the emitted light from the emission chip 21, so that the power detection chip 23 can monitor the forward optical power, and can adjust the reflection according to the monitoring result to reduce the impact of subsequent reflected light on optical performance. The first lens 31 can also transmit most of the emitted light from the emission chip 21 to transmit the emitted light to the optical fiber.

[0074] Optionally, the light incident surface of the power detection chip 23 and the light emitting surface of the emission chip 21 are in the same plane, which can improve the reliability of the first lens 31 reflecting the emission light of the emission chip 21 to the power detection chip 23 .

[0075] Optionally, the first lens 31 includes a first lens body 311 and a beam splitting film 313 covering the first lens body 311, the beam splitting film 313 is located on the side of the first lens body 311 facing the emitting chip 21, and the beam splitting film 313 is used to transmit a part of the emitted light to the second lens 32 and reflect another part of the emitted light to the power detection chip 23.

[0076] In the embodiment of the utility model, the beam splitting film 313 can transmit a part of the emitted light to the second lens 32, which can improve the reliability of forming the emission light path; the beam splitting film 313 reflects another part of the emitted light to the power detection chip 23, which can improve the reliability of forming the power detection light path.

[0077] Specifically, the first lens body 311 can be a light-transmitting optical glass, and the beam splitting film 313 is arranged on the side of the first lens body 311 facing the emitting chip 21, so that the first lens 31 can form a beam splitter, which can realize the function of transmitting light and reflecting light.

[0078] Specifically, the beam splitting film 313 can cover the entire surface or at least partially cover the side of the first lens body 311 facing the emitting chip 21. The beam splitting film 313 can be a high-transmittance and low-reflection beam splitting film, which can separate the incident light into reflected light and transmitted light in proportion. The specific proportion is not limited. In the embodiment of the utility model, it can be satisfied that a small part of the light is reflected to the power detection chip 23, and a large part of the light is transmitted to the second lens 32.

[0079] Optionally, the beam splitting film 313 may be a plated film or a coated film, which may improve the structural stability of the first lens 31 .

[0080] Specifically, the beam splitting film 313 may be formed on a side of the first lens body 311 facing the emitting chip 21 by plating or coating.

[0081] In some other optional embodiments of the utility model, the second lens 32 is arranged between the transceiver end and the receiving chip 22; there is a third angle between the second lens 32 and the light emitting surface of the transceiver end, and there is a fourth angle between the second lens 32 and the light incident surface of the receiving chip 22, and the received light from the light emitting surface of the transceiver end can be transmitted to the receiving chip 22 through the second lens 32.

[0082] In the embodiment of the utility model, the second lens 32 is arranged between the transceiver end and the receiving chip 22, and a third angle is formed between the second lens 32 and the light emitting surface of the transceiver end, and a fourth angle is formed between the second lens 32 and the light incident surface of the receiving chip 22, so that the second lens 32 can reflect and transmit the light, thereby improving the reliability of forming the transmitting light path and the receiving light path.

[0083] Specifically, there is a third angle between the second lens 32 and the light emitting surface of the transceiver, that is, there is a third angle between the light incident surface of the second lens 32 and the light emitting surface of the transceiver. Optionally, the third angle is an acute angle, so that the second lens 32 can reflect light to the transceiver, or transmit light emitted by the transceiver.

[0084] Specifically, there is a fourth angle between the second lens 32 and the light incident surface of the receiving chip 22, that is, there is a fourth angle between the light emitting surface of the second lens 32 and the light incident surface of the receiving chip 22, so that the second lens 32 can be placed at an angle relative to the receiving chip 22, so that the second lens 32 can transmit light to the receiving chip 22.

[0085] Optionally, the fourth angle may be an acute angle, so that the second lens 32 can transmit the light to the receiving chip 22 .

[0086] Optionally, the second lens 32 includes a second lens body 321 and a first filter film 323 covering the second lens body 321. The first filter film 323 is located on the side of the second lens body 321 facing the transceiver end and the first lens 31. The first filter film 323 is used to reflect the emitted light transmitted by the first lens 31 to the transceiver end, or to transmit the received light emitted by the transceiver end to the receiving chip 22.

[0087] In the embodiment of the utility model, the first filter film 323 can play a reflective role, so that the second lens 32 can reflect the transmitted light to the transceiver end to form a transmitting light path. The first filter film 323 can also play a transmissive role, so that the second lens 32 can transmit the received light to the receiving chip 22 to form a receiving light path.

[0088] Specifically, the second lens body 321 is a light-transmitting optical glass, and the first filter film 323 is arranged on the side of the second lens body 321 facing the transceiver end and the first lens 31, which can reflect and transmit light, so that the second lens 32 can form a filter.

[0089] Specifically, the first filter film 323 may cover the entire surface or at least partially cover the side of the second lens body 321 facing the transceiver end and the first lens 31. The first filter film 323 may reflect or transmit different waves, and may be specifically configured according to actual needs, and the embodiment of the utility model does not specifically limit this.

[0090] Optionally, the first filter film 323 may be a plated film or a coated film, which may improve the structural stability of the second lens 32 .

[0091] Specifically, the first filter film 323 can be formed on the side of the second lens body 321 facing the transceiver end and the first lens 31 by plating or coating.

[0092] Optionally, a second filter film 324 is disposed between the second lens body 321 and the receiving chip 22 , and the second filter film 324 is used to transmit light of a preset wavelength in the received light to the receiving chip 22 , and filter out light other than the preset wavelength.

[0093] In the embodiment of the utility model, the second filter film 324 can filter out stray light and transmit only light of a preset wavelength to the receiving chip 22, thereby preventing signal crosstalk.

[0094] Specifically, the second filter film 324 may be independent of the second lens 32 and the receiving chip 22 , or the second filter film 324 may also cover the side of the second lens body 321 facing the receiving chip 22 .

[0095] Optionally, the second filter film 324 may be a plated film or a coated film, which may improve the structural stability of the second lens 32 and the reliability of the second lens 32 in transmitting light.

[0096] Specifically, the second filter film 324 can be formed on the side of the second lens body 321 facing the receiving chip 22 by plating or coating.

[0097] Alternatively, if Figure 3 and Figure 4 As shown, the optical path conversion lens 3 can also include a third lens 33; one end of the third lens 33 can be connected to the first lens, and the other end can be connected to the second lens 32. The third lens 33, the second lens 32 and the first lens 31 can be connected in sequence to form a hollow triangular prism structure, which can improve the structural stability of the optical path conversion lens 3.

[0098] Specifically, the emission light reflected from the second lens 32 can be transmitted to the transceiver end through the third lens 33, so as to form an emission light path; the reception light incident from the transceiver end is transmitted to the second lens 32 through the third lens 33, so as to form a reception light path.

[0099] Specifically, the third lens 33 can be disposed between the transceiver end and the second lens 32. The light incident surface of the third lens 33 can be parallel to the light emitting surface of the second lens 32, so that the emitted light or the received light can pass through the third lens 33 vertically; the light emitting surface of the third lens 33 can be parallel to the light incident surface of the transceiver end, so that the emitted light can pass through the third lens 33 vertically.

[0100] Optionally, the optical path conversion lens 3 also includes a fourth lens 34; the fourth lens 34 can be connected to the third lens 33, the second lens 32 and the first lens 31 respectively to further improve the structural stability of the optical path conversion lens 3 and improve the reliability of fixing the optical path conversion lens 3.

[0101] Specifically, one side of the fourth lens 34 can be connected to the same end of the third lens 33, the second lens 32 and the first lens 31 respectively. By fixing the other side of the fourth lens 34, the connection area between the optical path conversion lens 3 and the bracket 12 can be increased, thereby improving the reliability and convenience of installing and fixing the optical path conversion lens 3.

[0102] Specifically, the third lens 33 and the fourth lens 34 may both include optical glass.

[0103] Specifically, the first lens 31 , the second lens 32 , the third lens 33 and the fourth lens 34 may be integrally formed to improve the structural stability of the optical path conversion lens 3 .

[0104] Specifically, Figure 4 As shown, the optical path conversion lens 3 can be a hollow triangular prism structure with an opening formed by a first lens 31 , a second lens 32 , a third lens 33 and a fourth lens 34 .

[0105] Alternatively, if Figure 1 As shown, the single-fiber bidirectional transmission packaging device also includes: a base 11 and a bracket 12 arranged on the base; the bracket 12 is connected to the base 11 and encloses the base 11 to form a accommodating space 13, and the optical path conversion lens 3, the transmitting chip 21 and the receiving chip 22 are all arranged in the accommodating space 13; wherein, the optical path conversion lens 3 and the transmitting chip 21 are connected to the bracket 12, and the receiving chip 22 is connected to the base 11.

[0106] In the embodiment of the utility model, the optical path conversion lens 3, the transmitting chip 21 and the receiving chip 22 can be fixed by the bracket 12 and the base 11, so as to facilitate the packaging of the optical path conversion lens 3, the transmitting chip 21 and the receiving chip 22. The transmitting chip 21, the receiving chip 22 and the optical path conversion lens 3 are integrated into one device, which can simplify the structure of the single-fiber bidirectional transmission packaging device, reduce the size of the single-fiber bidirectional transmission packaging device, reduce the design cost of the single-fiber bidirectional transmission packaging device, save costs, and shorten the transmission path of the optical path, thereby reducing the difficulty of optical path transmission, improving the coupling efficiency of the single-fiber bidirectional transmission packaging device, and meeting the requirements of different industrial-grade performance parameters; in addition, the production process of the single-fiber bidirectional transmission packaging device can also be reduced.

[0107] Specifically, the base 11 may be the main structure of the single-fiber bidirectional transmission packaging device, and may be used to install and arrange the receiving chip 22 and the bracket 12 . The bracket 12 may also install the optical path conversion lens 3 and the transmitting chip 21 .

[0108] Specifically, the bracket 12 is connected to the base 11 and encloses the base 11 to form a receiving space 13. The optical path conversion lens 3, the transmitting chip 21 and the receiving chip 22 are all arranged in the receiving space 13, so that the optical path conversion lens 3, the transmitting chip 21 and the receiving chip 22 can be centrally arranged, which is convenient for shortening the transmission path of light and the reliability of each optical path.

[0109] Optionally, the bracket 12 may include a first support plate 121 and a second support plate 122 set at an angle; the first support plate 121 and the second support plate 122 both extend along the base 11 toward the transceiver end; the optical path conversion lens 3 is connected to the first support plate 121; and the transmitting chip 21 is connected to the second support plate 122.

[0110] In an embodiment of the utility model, the optical path conversion lens 3 is connected to the first support plate 121, the transmitting chip 21 is connected to the second support plate 122, and the receiving chip 22 is connected to the base 11, so that the optical path conversion lens 3 can be conveniently set between the transmitting chip 21 and the receiving chip 22 to change the light transmission path to improve the reliability of forming the transmitting optical path and the receiving optical path.

[0111] Specifically, the transmitting chip 21 and the power detection chip 23 can be connected to the second support plate 122, and the receiving chip 22 can be connected to the base 11. Figure 1 and Figure 2 As shown, the first pin 41 of the transmitting chip 21, the second pin 42 of the receiving chip 22 and the third pin 43 of the power detection chip 23 can all be arranged on the same side of the base 11, so that the first pin 41, the second pin 42 and the third pin 43 can be placed centrally, and the space can be reasonably utilized, the overall packaging volume can be reduced, and the size of the single-fiber bidirectional transmission packaging device can be further reduced.

[0112] Specifically, one end of the first pin 41 can be electrically connected to the transmitting chip 21, and the other end can be electrically connected to other components to achieve electrical connection of the transmitting chip 21; one end of the second pin 42 can be electrically connected to the receiving chip 22, and the other end can be electrically connected to other components to achieve electrical connection of the receiving chip 22. One end of the third pin 43 can be electrically connected to the power detection chip 23, and the other end can be electrically connected to other components to achieve electrical connection of the power detection chip 23.

[0113] Optionally, a first heat dissipation pad 51 is provided on the bracket 12 ; the transmitting chip 21 is connected to the bracket 12 via the first heat dissipation pad 51 , which can prevent the heat generated by the transmitting chip 21 from damaging the bracket 12 , thereby increasing the service life of the bracket 12 .

[0114] Optionally, a second heat dissipation pad 52 is provided on the base 11 , and the receiving chip 22 can be connected to the base 11 through the second heat dissipation pad 52 , which can prevent the heat generated by the receiving chip 22 from damaging the base 11 and improve the service life of the base 11 .

[0115] Optionally, a first heat dissipation gasket 51 may be provided on the second support plate 122, and a third heat dissipation gasket 53 may also be provided on the second support plate 122; the transmitting chip 21 is connected to the second support plate 122 through the first heat dissipation gasket 51, and the power detection chip 23 is connected to the second support plate 122 through the third heat dissipation gasket 53, thereby improving the service life of the bracket 12.

[0116] Specifically, the first heat dissipation pad 51 , the second heat dissipation pad 52 and the third heat dissipation pad 53 can all play a role in heat dissipation buffering. The transmitting chip 21 generates a lot of heat, and the first heat dissipation pad 51 can be a heat sink.

[0117] Specifically, one side of the first heat dissipation pad 51 may be bonded and connected to the transmitting chip 21 , and the other side thereof may be bonded and connected to the second support plate 122 .

[0118] Specifically, one side of the second heat dissipation pad 52 may be bonded and connected to the receiving chip 22 , and the other side thereof may be bonded and connected to the base 11 .

[0119] Specifically, one side of the third heat dissipation pad 53 may be bonded and connected to the power detection chip 23 , and the other side thereof may be bonded and connected to the second support plate 122 .

[0120] Optionally, the single-fiber bidirectional transmission packaging device also includes a tube cap 14 and a focusing lens 8; the tube cap 14 covers the bracket 12 and is connected to the base 11; a lens mounting hole 141 is provided on the tube cap 14 at a position corresponding to the transceiver end; the focusing lens 8 is installed in the lens mounting hole 141.

[0121] In the embodiment of the utility model, the focusing lens 8 can be installed in the lens installation hole 141. The focusing lens 8 can be used to converge the emission light to the optical fiber, which can improve the reliability of forming the emission light path. The focusing lens 8 can also be used to converge the received light passing through the optical fiber to the second lens 32, which can also improve the reliability of the receiving chip 22 receiving the optical fiber, thereby ensuring the stability of forming the receiving light path.

[0122] Specifically, the focusing lens 8 can be used to focus the light beam; the focusing lens 8 can be set corresponding to the optical fiber to couple the focused light beam to the end face of the optical fiber; the focusing lens 8 can also be set corresponding to the second lens 32 to couple the focused light beam to the second lens 32, or the focusing lens 8 can also be set corresponding to the third lens 33 to couple the focused light beam to the third lens 33.

[0123] Specifically, the cap 14 may include a connecting plate 142 and an annular plate 143; the connecting plate 142 may be connected to the base 11 through the annular plate 143, the connecting plate 142 is located above the bracket 12, and the connecting plate 142, the annular plate 143 and the base 11 may enclose a receiving cavity for placing the bracket 12. The connecting plate 142 may be provided with a lens mounting hole 141.

[0124] Specifically, the first support plate 121, the second support plate 122 and the base 11 are perpendicular to each other; the connecting plate 142 is parallel to the base 11; the transmitting chip 21 and the power detection chip 23 are both connected to the second support plate 122, the first lens 31 and the connecting plate 142 are set at an acute angle, and the second lens 32 and the connecting plate 142 are set at an acute angle, which can simplify the transmission path of the optical path and ensure the accuracy of single-fiber bidirectional transmission.

[0125] Specifically, the transmitting chip 21, the receiving chip 22 and the lens mounting hole 141 can be arranged in the circumference of the optical path conversion lens 3, so that the transmitting chip 21, the receiving chip 22 and the focusing lens 8 can be arranged around the optical path conversion lens 3, and the transmitting chip 21, the receiving chip 22 and the focusing lens 8 can all undergo optical path conversion with the optical path conversion lens 3.

[0126] Furthermore, if Figure 3 As shown, the first lens 31 transmits the emission light of the emission chip 21 to the second lens 32, the second lens 32 reflects the emission light to the third lens 33, the third lens 33 transmits the emission light to the focusing lens 8, and the focusing lens 8 focuses the light beam to a single optical fiber in the optical fiber connector 7 to form an emission light path.

[0127] At the same time, the first lens 31 reflects the emission light of the emission chip 21 to the power detection chip 23 to form a power detection optical path.

[0128] Specifically, a single optical fiber transmits the received light to the focusing lens 8, the focusing lens 8 focuses the received light to the third lens 33, the third lens 33 transmits the received light to the second lens 32, and the second lens 32 transmits the received light to the receiving chip 22 to form a receiving light path.

[0129] Optionally, the single-fiber bidirectional transmission packaging device further includes an amplifier 61 and a capacitor 62; the amplifier 61 may be electrically connected to the receiving chip 22 and the capacitor 62, respectively.

[0130] In the embodiment of the utility model, after the receiving chip 22 converts the optical signal into an electrical signal, the amplifier 61 can convert the electrical signal into an electrical signal, amplify it and then transmit it to the capacitor 62. The capacitor 62 can reduce interference signals and ensure the stability of subsequent circuits.

[0131] Alternatively, if Figure 5 and Figure 6 As shown, the single-fiber bidirectional transmission packaging device also includes a fiber optic connector 7; the fiber optic connector 7 can be connected to the transceiver end and is used to package the optical fiber, which can improve the reliability of the transmitted light being received by the optical fiber through the transceiver end, and can also improve the transceiver end transmitting the received light emitted by the optical fiber to the second lens 32.

[0132] Optionally, the optical fiber connector 7 is provided with a through hole 721 for packaging the optical fiber, and the through hole 721 is opposite to the lens mounting hole 141, so that the focusing lens 8 couples the focused light beam to the end face of the optical fiber.

[0133] Optionally, the optical fiber connector 7 may include a core seat 71 and a core insert 72 connected to the core seat 71; the core insert 72 is provided with a through hole 721, and the core insert 72 is used to encapsulate the optical fiber, which can protect and fix the optical fiber.

[0134] Specifically, the core holder 71 can be covered on the bracket 12 and connected to the base 11 , which can improve the reliability of fixing the optical fiber connector 7 .

[0135] Specifically, Figure 5-7 As shown, the optical fiber connector 7 further includes a core insert tube 73, which can be matched and connected to the core holder 71, and can be used to install and fix the core insert 72. The core holder 71 can be matched with the shape of the base 1 to achieve fixation between the core holder 71 and the base 1.

[0136] Specifically, the tube core seat 71 can be covered on the tube cap 14, and the shape of the tube core seat 71 can be adapted to the shape of the tube cap 14. Figure 7 As shown, the tube core seat 71 can be covered outside the tube cap 14 and can be connected to the base 11.

[0137] The single-fiber bidirectional transmission packaging device described in the embodiment of the utility model has at least the following advantages:

[0138] In an embodiment of the utility model, the first lens transmits the emission light of the emission chip to the second lens, the second lens reflects the emission light to the transceiver end, and the transceiver end transmits the emission light to the optical fiber to form an emission light path; the transceiver end transmits the received light passing through the optical fiber to the second lens, and the second lens transmits the received light to the receiving chip to form a receiving light path, so that the single-fiber bidirectional transmission packaging device can both transmit light to the optical fiber and receive light emitted by the optical fiber, which is convenient for realizing single-fiber bidirectional transmission. Moreover, only the first lens and the second lens connected need to change the optical path, which can simplify the structure of the single-fiber bidirectional transmission packaging device, reduce the size of the single-fiber bidirectional transmission packaging device, and reduce the design cost of the single-fiber bidirectional transmission packaging device.

[0139] Although the preferred embodiments of the utility model embodiments have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the utility model embodiments.

[0140] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements.

[0141] The single-fiber bidirectional transmission packaging device provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model; at the same time, for general technical personnel in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A single-fiber bidirectional transmission packaging device, characterized in that: include: A transmitting chip (21), a receiving chip (22) and an optical path conversion lens (3), wherein the optical path conversion lens (3) comprises a first lens (31) and a second lens (32) connected to each other, and the single-fiber bidirectional transmission packaging device has a transmitting and receiving end that cooperates with the optical fiber; wherein: The first lens (31) transmits the emission light of the emission chip (21) to the second lens (32), the second lens (32) reflects the emission light to the transceiver end, and the transceiver end transmits the emission light to the optical fiber to form an emission light path; The transceiver end transmits the received light passing through the optical fiber to the second lens (32), and the second lens (32) transmits the received light to the receiving chip (22), thereby forming a receiving light path.

2. The single-fiber bidirectional transmission packaging device according to claim 1, characterized in that: The first lens (31) is arranged between the transmitting chip (21) and the second lens (32); A first angle is formed between the light-emitting surface of the transmitting chip (21) and the first lens (31), and a second angle is formed between the second lens (32) and the first lens (31); the emission light emitted from the light-emitting surface of the transmitting chip (21) is transmitted through the first lens (31) to the second lens (32), and then reflected by the second lens (32) to the transmitting and receiving end.

3. The single-fiber bidirectional transmission packaging device according to claim 2, characterized in that: The single-fiber bidirectional transmission packaging device further comprises: a power detection chip (23); The power detection chip (23) and the transmitting chip (21) are arranged on the same side of the first lens (31), and the emission light emitted from the transmitting chip (21) is reflected by the first lens (31) to the power detection chip (23), thereby forming a power detection optical path.

4. The single-fiber bidirectional transmission packaging device according to claim 3, characterized in that: The light incident surface of the power detection chip (23) and the light emitting surface of the emission chip (21) are located in the same plane.

5. The single-fiber bidirectional transmission packaging device according to claim 3, characterized in that: The first lens (31) comprises a first lens body (311) and a beam splitting film (313) covering the first lens body (311), wherein the beam splitting film (313) is located on a side of the first lens body (311) facing the emission chip (21), and the beam splitting film (313) is used to transmit a portion of the emission light to the second lens (32) and reflect another portion of the emission light to the power detection chip (23).

6. The single-fiber bidirectional transmission packaging device according to claim 5, characterized in that: The beam splitting film (313) is a plated film or a coated film.

7. The single-fiber bidirectional transmission packaging device according to claim 2, characterized in that: The first angle and the second angle are acute angles.

8. The single-fiber bidirectional transmission packaging device according to claim 1, characterized in that: The second lens (32) is arranged between the transceiver end and the receiving chip (22); A third angle is formed between the second lens (32) and the light emitting surface of the transceiver end, and a fourth angle is formed between the second lens (32) and the light incident surface of the receiving chip (22). The received light emitted from the light emitting surface of the transceiver end can be transmitted to the receiving chip (22) through the second lens (32).

9. The single-fiber bidirectional transmission packaging device according to claim 8, characterized in that: The second lens (32) comprises a second lens body (321) and a first filter film (323) covering the second lens body (321), wherein the first filter film (323) is located on a side of the second lens body (321) facing the transceiver end and the first lens (31), and the first filter film (323) is used to reflect the emission light transmitted by the first lens (31) to the transceiver end, or to transmit the reception light emitted by the transceiver end to the receiving chip (22).

10. The single-fiber bidirectional transmission packaging device according to claim 9, characterized in that: A second filter film (324) is provided between the second lens body (321) and the receiving chip (22), and the second filter film (324) is used to transmit light of a preset wavelength in the received light to the receiving chip (22) and filter out light other than the preset wavelength.

11. The single-fiber bidirectional transmission packaging device according to claim 10, characterized in that: The first filter film (323) and the second filter film (324) are plated films or coated films.

12. The single-fiber bidirectional transmission packaging device according to claim 8, characterized in that: The third angle and the fourth angle are acute angles.

13. The single-fiber bidirectional transmission packaging device according to claim 1, characterized in that: The optical path conversion lens (3) further comprises a third lens (33); One end of the third lens (33) is connected to the first lens (31), and the other end is connected to the second lens (32); the third lens (33), the second lens (32) and the first lens (31) are connected in sequence to form a hollow triangular prism structure; The emission light reflected from the second lens (32) is transmitted to the transceiver end via the third lens (33), and the reception light incident from the transceiver end is transmitted to the second lens (32) via the third lens (33).

14. The single-fiber bidirectional transmission packaging device according to claim 13, characterized in that: The optical path conversion lens (3) further comprises a fourth lens (34); The fourth lens (34) is connected to the third lens (33), the second lens (32) and the first lens (31) respectively.

15. The single-fiber bidirectional transmission packaging device according to claim 1, characterized in that: The single-fiber bidirectional transmission packaging device further comprises: a base (11) and a bracket (12) arranged on the base (11); The bracket (12) is connected to the base (11) and encloses the base (11) to form a receiving space (13), and the optical path conversion lens (3), the transmitting chip (21) and the receiving chip (22) are all arranged in the receiving space; The optical path conversion lens (3) and the transmitting chip (21) are connected to the bracket (12), and the receiving chip (22) is connected to the base (11).

16. The single-fiber bidirectional transmission packaging device according to claim 15, characterized in that: The bracket (12) comprises a first support plate (121) and a second support plate (122) which are arranged at an angle; The first support plate (121) and the second support plate (122) both extend along the base (11) toward the transceiver end; The optical path conversion lens (3) is connected to the first supporting plate (121); The transmitting chip (21) is connected to the second supporting plate (122).

17. The single-fiber bidirectional transmission packaging device according to claim 15, characterized in that: The bracket (12) is provided with a first heat dissipation pad (51), and the base (11) is provided with a second heat dissipation pad (52); The transmitting chip (21) is connected to the bracket (12) via the first heat dissipation pad (51); The receiving chip (22) is connected to the base (11) via the second heat dissipation pad (52).

18. The single-fiber bidirectional transmission packaging device according to claim 15, characterized in that: The single-fiber bidirectional transmission packaging device also includes a tube cap (14) and a focusing lens (8); The pipe cap (14) covers the bracket (12) and is connected to the base (11); A lens mounting hole (141) is provided on the tube cap (14) at a position corresponding to the transmitting and receiving end; The focusing lens (8) is installed in the lens installation hole (141), and the focusing lens (8) is used to focus the emitted light onto the optical fiber or to focus the received light passing through the optical fiber onto the second lens (32).

19. The single-fiber bidirectional transmission packaging device according to claim 1, characterized in that: The single-fiber bidirectional transmission packaging device also includes an amplifier (61) and a capacitor (62); The amplifier (61) is electrically connected to the receiving chip (22) and the capacitor (62) respectively.

20. The single-fiber bidirectional transmission packaging device according to claim 1, characterized in that: The single-fiber bidirectional transmission packaging device also includes an optical fiber connector (7); The optical fiber connector (7) is connected to the transceiver end and is used to encapsulate the optical fiber.

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