CN217443582U - Optical module lock pin assembly and optical module - Google Patents
Optical module lock pin assembly and optical module Download PDFInfo
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- CN217443582U CN217443582U CN202220444402.0U CN202220444402U CN217443582U CN 217443582 U CN217443582 U CN 217443582U CN 202220444402 U CN202220444402 U CN 202220444402U CN 217443582 U CN217443582 U CN 217443582U
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Abstract
The utility model provides an optical module lock pin subassembly and optical module, optical module lock pin subassembly includes first optic fibre and second optic fibre, wherein, first optic fibre is connected with the second optic fibre; the core diameter of the first optical fiber is smaller than that of the second optical fiber, and the core diameter of the second optical fiber is between that of the multimode optical fiber and that of the single-mode optical fiber; the second optical fiber is used for receiving a carrier signal input by an external optical fiber to be accessed and transmitting the carrier signal to the first optical fiber; the first optical fiber is used for transmitting the received carrier signal to an optical receiving unit in the optical module. The utility model discloses can adapt to single mode fiber transmission, also can improve the coupling efficiency with multimode fiber, when short distance transmission fundamental mode carrier signal, can compatible single mode and multimode fiber; in addition, high-order modes generated when the fundamental mode carrier signals are transmitted in the multimode optical fiber can be filtered to a certain extent, and carrier crosstalk entering the optical module is reduced.
Description
Technical Field
The utility model relates to an optical fiber communication field especially relates to an optical module lock pin subassembly and optical module.
Background
With the popularization and application of the mobile internet, data centers are rapidly developed and become important infrastructure in the information society. The data center is composed of a large number of servers, data transmission and exchange with high speed and large capacity are needed among the servers, and at present, the CWDM4(Coarse Wavelength Division Multiplexer 4, four-channel Wavelength Division multiplexing) technology is often adopted to realize high-speed data transmission, that is, the Wavelength Division multiplexing technology is used to compound four carrier signals with small Wavelength difference into one optical fiber for transmission. Compared with a multimode fiber, the single mode fiber has a smaller core diameter, lower dispersion and higher cost, so that the multimode fiber can be used as a temporary substitute under the condition of shorter transmission distance, and especially the multimode fiber is generally used under the condition that some transmission distances are shorter and a multimode interface needs to be butted.
In a data transmission system adopting the CWDM4 technology, if a multimode optical fiber needs to be butted with a light receiving end of a single-mode optical module, the prior art generally has two ways: firstly, a multimode optical fiber is directly inserted into a single-mode optical module, but a section of single-mode optical fiber is usually adopted as a switching optical fiber in a single-mode optical module ferrule assembly, and larger insertion loss is easily generated by direct butt joint; and secondly, an optical fiber converter is added before the light receiving end of the single-mode optical module, but the equipment cost and the labor workload are increased.
SUMMERY OF THE UTILITY MODEL
The inventor finds that when the multimode optical fiber is directly inserted into the single-mode optical module, the core diameter of the multimode optical fiber is larger and is generally not smaller than 50 μm (micrometer), and in the ferrule assembly of the single-mode optical module, the switching optical fiber for being butted with the external optical fiber is generally a single-mode optical fiber, and the core diameter of the switching optical fiber is smaller and is generally about 9 μm, so that light coming out of the multimode optical fiber is difficult to be coupled into the switching optical fiber, and thus, the signal access loss is too large or the signal access fails. On the other hand, if the optical fiber converter is added in front of the optical receiving end of the single-mode optical module, not only the labor and equipment costs are increased, but also signal distortion is easily caused, because in the CWDM4 technology, carrier signals of four different wavelengths are combined and transmitted in the optical fiber as a fundamental mode, when the fundamental mode is transmitted in a multimode optical fiber, high-order transmission modes are generated due to factors such as chromatic dispersion, and the high-order transmission modes are influenced by factors such as distance, bending, environmental vibration, and optical fiber disturbance during the transmission process, irregular fluctuation is generated, unstable carrier crosstalk is formed, and when the optical fiber converter is used for performing mode conversion on such carrier signals, the high-order transmission modes are also converted, and signal distortion is easily caused.
In order to at least partially solve the technical problems in the prior art, the inventor of the present invention provides the following technical solutions through specific embodiments:
in a first aspect, the utility model provides an optical module lock pin assembly, wherein:
the first optical fiber is connected with the second optical fiber; the second optical fiber is used for connecting an external optical fiber to be accessed so as to receive a carrier signal input by the external optical fiber to be accessed and transmit the carrier signal to the first optical fiber; the first optical fiber is used for transmitting the received carrier signal to an optical receiving unit in the optical module; the external optical fiber to be accessed is a single mode optical fiber or a multimode optical fiber;
the core diameter of the first optical fiber is smaller than that of the second optical fiber, and the core diameter of the second optical fiber is between that of the multimode optical fiber and that of the single-mode optical fiber.
Further, the core diameter of the first optical fiber is larger than that of the single-mode optical fiber.
Further, the core diameter of the first optical fiber is 13 microns, and the core diameter of the second optical fiber is 30 microns.
Further, the optical module ferrule assembly further comprises a base, a pipe cap, a first ferrule and a second ferrule, wherein:
the base is connected with the pipe cap, the first optical fiber is embedded in the first plug core, and the second optical fiber is embedded in the second plug core;
the first inserting core is embedded in the base, and two ends of the second inserting core are respectively embedded in the base and the pipe cap.
Furthermore, the optical module ferrule assembly further comprises a first ceramic sleeve and a second ceramic sleeve, wherein the first ceramic sleeve is sleeved on the first ferrule and embedded in the base; the second ceramic sleeve is sleeved on the second inserting core and embedded in the pipe cap.
Furthermore, two ends of the first ceramic bushing are respectively embedded in the base and the pipe cap; or:
and two ends of the second ceramic sleeve are embedded in the base and the pipe cap respectively.
Further, the optical module ferrule assembly further comprises a base, a pipe cap, a first ferrule and a second ferrule, wherein:
the base is connected with the pipe cap; the first optical fiber is embedded in the first plug core, and the second optical fiber is embedded in the second plug core;
the second inserting core is embedded in the pipe cap, and two ends of the first inserting core are respectively embedded in the base and the pipe cap.
In a second aspect, the present invention provides an optical module, including any one of the above solutions, the optical module ferrule assembly.
Further, the optical module further comprises an optical receiving unit, a wave splitter is arranged in the optical receiving unit, and the channel distance of the wave splitter is set to be larger than 250 micrometers.
Further, the optical module also comprises an optical emission ferrule assembly; the light emitting ferrule assembly is configured as a single mode ferrule assembly.
The embodiment of the utility model provides an above-mentioned technical scheme's beneficial effect includes at least:
the utility model discloses set up two sections fibre core diameter switching optic fibre that diminish gradually in optical module lock pin subassembly, wherein the great second optic fibre of fibre core diameter is used for switching the carrier signal of outside optical fiber transmission to first optic fibre, and the less first optic fibre of fibre core diameter is used for with carrier signal switches to the light receiving unit in the optical module. When the external optical fiber is a single-mode optical fiber, because the diameter of the fiber core of the single-mode optical fiber is smaller than that of the fiber core of the second optical fiber, the carrier signals output by the single-mode optical fiber can be completely coupled to the second optical fiber and then transmitted into the first optical fiber through the second optical fiber, and the transmission of the carrier signals is basically not influenced; when the external optical fiber is a multimode optical fiber, because the diameter of the fiber core of the second optical fiber is between the first optical fiber and the multimode optical fiber, the carrier signal output by the multimode optical fiber is relatively easy to couple to the second optical fiber and then is transmitted into the first optical fiber by the second optical fiber, and compared with the prior art, the coupling effect of directly butting the multimode optical fiber and the first optical fiber is good.
The optical module ferrule assembly provided by the utility model can be adapted to single-mode optical fibers as the optical receiving end of an optical module, and can also improve the coupling efficiency when being butted with the multi-mode optical fibers, so that the coupling efficiency of an optical module interface and external optical fibers is higher and the signal transmission effect is better under the condition that different mode optical fibers are required to be butted; and when the external multimode optical fiber transmits a fundamental mode signal and the transmission distance is short, the optical module ferrule assembly can be adapted to the external multimode optical fiber, so that the compatibility of a single mode and the multimode optical fiber is realized.
The utility model provides an optical module lock pin subassembly is as the light receiving end of optical module, compare with using fiber converter to switch multimode fiber and single mode optical module, when outside multimode fiber only is used for transmitting basic mode carrier signal, because outside multimode fiber, the fibre core diameter of second optic fibre and first optic fibre reduces gradually, can be to a certain extent the peripheral high-order mode that produces when filtering basic mode transmits in multimode fiber, and mainly remain the basic mode at optic fibre middle part, thereby the carrier wave of unstable high-order mode is crosstalked.
Drawings
Fig. 1 is a schematic structural diagram of a single-mode optical module in the prior art when a single-mode optical fiber in an optical receiving ferrule assembly is butted with an external multimode optical fiber;
fig. 2 is a schematic structural diagram of the optical module ferrule assembly according to the first embodiment of the present invention when the first optical fiber, the second optical fiber and the external multimode optical fiber are butted;
fig. 3 is a schematic structural diagram of an optical module ferrule assembly according to a first embodiment of the present invention;
fig. 4 is a schematic structural diagram of an optical module according to a second embodiment of the present invention;
fig. 5 is a partial schematic view of a light receiving unit in the light module shown in fig. 4;
fig. 6 is a schematic structural diagram of the optical module shown in fig. 4, when the single-mode optical fiber in the optical transmission ferrule assembly is butted with the external multimode optical fiber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
Example one
As shown in fig. 2 and fig. 3, the embodiment of the utility model provides an optical module lock pin assembly, optical module lock pin assembly can be applied to the light receiving end of optical module, and the inside light transceiver unit of this optical module all adapts to single mode transmission mode, optical module lock pin assembly includes first optic fibre 1 and second optic fibre 2, wherein:
the first optical fiber 1 is connected with the second optical fiber 2; the second optical fiber 2 is used for connecting an external optical fiber to be accessed so as to receive a carrier signal input by the external optical fiber to be accessed and transmit the carrier signal to the first optical fiber 1; the first optical fiber 1 is used for transmitting the received carrier signal to an optical receiving unit in the optical module, and the external optical fiber to be accessed is a single mode optical fiber or a multimode optical fiber.
The core 11 of the first optical fiber 1 has a smaller diameter than the core 21 of the second optical fiber 2, and the core 21 of the second optical fiber 2 has a diameter between the core diameters of the multimode optical fiber and the single mode optical fiber.
Specifically, the utility model provides an in the optical module lock pin subassembly, first optic fibre 1 docks with second optic fibre 2, and 11 diameters of fibre core of first optic fibre 1 can set up the fibre core diameter commonly used of switching optic fibre in the lock pin subassembly of single mode optical module light receiving terminal among the prior art to in with the light receiving unit looks adaptation in this optical module. In the prior art, the switching optical fiber of the single-mode optical module is generally set as a single-mode optical fiber so as to be in butt joint with an external single-mode optical fiber, and the diameter of the fiber core of the switching optical fiber is about 9 um. However, in this embodiment, the first optical fiber 1 is butted with the second optical fiber 2 at the light receiving end, so that it is not necessary to consider the problem of butting the first optical fiber 1 with the external optical fiber, but rather, the problem of coupling between the first optical fiber 1 and the second optical fiber 2 should be considered. In practice, the core 11 of the first optical fiber 1 may be provided with a diameter slightly larger than that of a single-mode fiber so as to be coupled with the second optical fiber 2, and at the same time, the first optical fiber 1 is connected with the light receiving unit in the optical module through a pigtail having the same core diameter as that of the first optical fiber 1 so as to realize the adaptation with the light receiving unit. However, considering that the optical transceiver units of the optical module are all adapted to a single-mode transmission mode, the diameter of the fiber core 11 of the first optical fiber 1 should not be too large, for example, 13um is set, which can improve the coupling efficiency with the second optical fiber 2 while ensuring the transmission effect in the optical module.
The diameter of the fiber core 21 of the second optical fiber 2 is set to be between the first optical fiber 1 and the multimode optical fiber, when the diameter of the fiber core 11 of the first optical fiber 1 and the diameter of the fiber core of the multimode optical fiber are taken as the intermediate value, the coupling effect between the first optical fiber 1 and the multimode optical fiber is good, and in the prior art, the diameter of the fiber core of the multimode optical fiber is generally not less than 50um, so that the second optical fiber 2 in the scheme can be set to be less than 50um, for example, under the condition that the diameter of the fiber core 11 of the first optical fiber 1 is set to be 13um, the diameter of the fiber core 21 of the second optical fiber 2 is set to be about 30um, and the good coupling effect can be formed between the first optical fiber 1 and the external multimode optical fiber.
It should be noted that the optical module ferrule assembly provided in this embodiment is mainly used in a scenario of short-distance and high-speed transmission, such as a data center, where carrier signals of a fundamental mode are transmitted in a multimode fiber, and when the fundamental mode is transmitted in the multimode fiber, an unstable high-order transmission mode is gradually generated along with an extension of a transmission distance due to factors such as chromatic dispersion, and the high-order transmission modes are influenced by factors such as a distance, a bend, an environmental vibration, and a fiber disturbance during transmission, and irregularly fluctuate to form unstable carrier crosstalk, so that the fundamental mode signals are influenced, and therefore, the high-order modes are desirably filtered.
In practical application, when the optical module ferrule assembly is used for being butted with a multimode optical fiber, a fundamental mode carrier signal in the multimode optical fiber is transmitted along a central axis of the optical fiber, and a fiber core 21 of the second optical fiber 2 has a diameter between that of the single mode optical fiber and that of the multimode optical fiber, so that the fundamental mode carrier signal is easily received by the second optical fiber 2, and peripheral high-order modes in the multimode optical fiber are partially filtered out due to a difference in fiber core diameter between the second optical fiber 2 and the multimode optical fiber, and when the carrier signal transmitted in the second optical fiber 2 enters the first optical fiber 1, the peripheral high-order modes are filtered out again, and the fundamental mode signal is mainly retained, so that a main carrier signal is received by the optical module, and most high-order modes which can generate signal interference are also filtered out. In fact, the core 11 of the first optical fiber 1 is arranged with a diameter larger than that of the single-mode optical fiber in the prior art, so that the fundamental mode signal in the second optical fiber 2 is received by the first optical fiber 1 as much as possible to achieve a better coupling effect.
When the optical module ferrule assembly is used for being butted with a single-mode fiber, as the diameter of the fiber core of the single-mode fiber is smaller than that of the fiber core 21 of the second fiber 2, carrier signals output by the single-mode fiber can be completely coupled to the second fiber 2 and then transmitted into the first fiber 1 through the second fiber 2. It can be understood that, when the fundamental mode carrier signal is transmitted in the single-mode optical fiber and enters the second optical fiber 2 with a larger core diameter for transmission, the transmission mode of the fundamental mode carrier signal is less affected by the change of the fiber diameter due to the extremely short transmission distance in the second optical fiber 2, and especially when the diameter of the core 21 of the second optical fiber 2 is set to be smaller than the core diameter of the single-mode optical fiber, the transmission mode of the fundamental mode carrier signal in the second optical fiber 2 is not substantially affected and still transmits along the central axis of the optical fiber. Therefore, the fundamental mode carrier signal is easily received by the first optical fiber 1, and particularly when the core 11 diameter of the first optical fiber 1 is set to be slightly larger than the core diameter of the single mode optical fiber, the first optical fiber 1 more easily receives the fundamental mode carrier signal in its entirety to achieve good coupling efficiency.
In this embodiment, two sections of switching optical fibers with gradually reduced fiber core diameters are arranged in the optical module ferrule assembly, wherein the second optical fiber 2 with a larger fiber core diameter is used for switching a carrier signal transmitted by an external optical fiber to the first optical fiber 1, and the first optical fiber 1 with a smaller fiber core diameter is used for switching the carrier signal to an optical receiving unit in an optical module. When the external optical fiber is a single-mode optical fiber, because the diameter of the fiber core of the single-mode optical fiber is smaller than that of the fiber core 21 of the second optical fiber 2, the carrier signals output by the single-mode optical fiber can be completely coupled to the second optical fiber 2 and then transmitted into the first optical fiber 1 through the second optical fiber 2, and the transmission of the carrier signals is basically not influenced; when the external optical fiber is a multimode optical fiber, because the diameter of the fiber core 21 of the second optical fiber 2 is between the first optical fiber 1 and the multimode optical fiber, the carrier signal output by the multimode optical fiber is relatively easy to couple to the second optical fiber 2 and then is transmitted into the first optical fiber 1 through the second optical fiber 2, compared with the prior art in which the multimode optical fiber is directly butted with the first optical fiber 1, the coupling effect is good.
The optical module ferrule assembly provided by the embodiment can be adapted to a single-mode optical fiber as an optical receiving end of an optical module, and can also improve the coupling efficiency when the optical module ferrule assembly is in butt joint with a multimode optical fiber, so that the coupling efficiency of an optical module interface and an external optical fiber is higher and the signal transmission effect is better under the condition that optical fibers of different modes need to be in butt joint; and when the external multimode optical fiber transmits a fundamental mode signal and the transmission distance is short, the optical module ferrule assembly can be adapted to the external multimode optical fiber, so that the compatibility of a single mode and the multimode optical fiber is realized.
Compared with the optical receiving end of the optical module, when the external multimode fiber is only used for transmitting a fundamental mode carrier signal, the optical module ferrule assembly provided by the embodiment is used as the optical receiving end of the optical module, and the fiber core diameters of the external multimode fiber, the second fiber and the first fiber are gradually reduced, so that peripheral high-order modes generated when the fundamental mode is transmitted in the multimode fiber can be filtered to a certain extent, and the fundamental mode in the middle of the fiber is mainly reserved, thereby reducing the carrier crosstalk of unstable high-order modes.
It can be understood that the first optical fiber 1 and the second optical fiber 2 are disposed in an optical module ferrule assembly having a structure capable of fixing the first optical fiber 1 and the second optical fiber 2.
In some embodiments, as shown in fig. 3, the optical module ferrule assembly further comprises a base 3, a cap 4, a first ferrule 5, and a second ferrule 6; the base 3 is connected with the pipe cap 4, the first optical fiber 1 is embedded in the first inserting core 5, and the second optical fiber 2 is embedded in the second inserting core 6; the first inserting core 5 is embedded in the base 3, and two ends of the second inserting core 6 are respectively embedded in the base 3 and the pipe cap 4. This embodiment provides a specific structure including optical module lock pin subassembly of first optic fibre 1 and second optic fibre 2, sets up second lock pin 6 into both ends and inlays respectively in base 3 and pipe cap 4, can be convenient for cup joint base 3 and pipe cap 4 respectively on second lock pin 6 when assembling optical module lock pin subassembly to, after the equipment is accomplished, second lock pin 6 can play certain connection fixed action to base 3 and pipe cap 4, has strengthened this optical module lock pin subassembly's structural stability.
It can be understood that, in the embodiment, a structure for connecting and fixing the base and the pipe cap by using the ferrule auxiliary base is provided, in addition to embedding both ends of the second ferrule 6 in the base 3 and the pipe cap 4 respectively, in an embodiment, both ends of the first ferrule 5 may be embedded in the base 3 and the pipe cap 4 respectively, and at this time, the second ferrule 6 is embedded in the pipe cap 4. The structure can also play the same role as the scheme, and the structural stability of the optical module ferrule assembly is convenient to assemble and strengthen.
In some embodiments, as shown in fig. 3, the optical module ferrule assembly further comprises a first ferrule 7 and a second ferrule 8; the first ceramic sleeve 7 is sleeved on the first ferrule 5, and the first ceramic sleeve 7 is embedded in the base 3; the second ceramic sleeve 8 is sleeved on the second ferrule 6, and the second ceramic sleeve 8 is embedded in the pipe cap 4. Preferably, the second ceramic sleeve 8 is also used for sleeving a ferrule embedded with the external optical fiber to be accessed. In the embodiment, the first ceramic sleeve 7 is arranged outside the first ferrule 5 of the optical module ferrule assembly, and the second ceramic sleeve 8 is arranged at the second ferrule 6 and the socket for butting the external optical fiber ferrule.
Preferably, as shown in fig. 3, in one embodiment, the first ceramic bushing 7 is embedded at both ends in the base 3 and the cap 4, respectively, and the second ceramic bushing 8 is located in the cap 4. In this embodiment, the two ends of the first ceramic sleeve 7 are respectively embedded in the base 3 and the pipe cap 4, so that the base 3 and the pipe cap 4 can be respectively sleeved on the first ceramic sleeve 7 when the optical module ferrule assembly is assembled, and after the optical module ferrule assembly is assembled, the base 3 and the pipe cap 4 can be connected and fixed to some extent, so that the structural stability of the optical module ferrule assembly is enhanced; meanwhile, the two ends of the second inserting core 6 are respectively embedded in the base 3 and the pipe cap 4, and the structure is further improved. In the embodiment, the connecting parts of the structures in the pipe cap and the base are dislocated at the connecting ends by a certain distance and are embedded into each other, so that the optical module ferrule assembly can be conveniently assembled, and the structure of the optical module ferrule assembly is more stable.
In another embodiment, two ends of the second ceramic sleeve 8 may be respectively embedded in the base 3 and the cap 4, and at this time, the first ceramic sleeve 7 is entirely located in the base 3.
Example two
As shown in fig. 4, the embodiment of the present invention further provides an optical module, including the optical module ferrule assembly 100 according to any one of the first embodiment; the optical module ferrule assembly 100 is located at the optical receiving end of the optical module.
The principle of the problem solved by the optical module receiving the external optical fiber carrier signal is similar to that of the optical module ferrule assembly in the first embodiment, so that implementation of the optical module receiving the external optical fiber carrier signal can be referred to implementation of the optical module ferrule assembly in the first embodiment, and repeated details are not repeated.
In some embodiments, as shown in fig. 4, the optical module further includes an optical receiving unit 200 and a pigtail 300, a core diameter of the pigtail 300 is the same as a core 11 diameter of the first optical fiber 1, for transmitting the output carrier signal of the first optical fiber 1 to the optical receiving unit 200. Specifically, when the core 11 diameter of the first optical fiber 1 is set to 13um, the core diameter of the pigtail 300 is also set to 13um to achieve good coupling with the first optical fiber 1.
In some embodiments, as shown in fig. 5, the optical receiving unit 200 further includes a splitter 201 for splitting the multi-wavelength carrier signal accessed by the optical module ferrule assembly 100. It can be understood that when the carrier signal input to the optical module is a multiplexed signal after being combined, the multiplexed signal needs to be demultiplexed, i.e., demultiplexed. However, since the optical module ferrule assembly 100 is designed to be compatible with a single mode and a multimode fiber, when the diameter of the fiber core 11 of the first fiber 1 is designed to be larger than the diameter of the fiber core of the single mode fiber, if the optical module receives an input signal of an external multimode fiber, it is possible to make a carrier signal entering the first fiber 1 in a few-mode state, where the few-mode carrier signal is larger than a light spot of the single mode carrier signal, so that the light spot of a signal received by the optical receiving unit 200 is also larger, and at this time, if the wave splitter 201 still adopts a channel pitch of 250um suitable for the single mode signal, the problem of signal crosstalk in adjacent channels is likely to occur. Therefore, it is preferable that the channel pitch of the wave splitter 201 is set to be greater than 250 micrometers, for example, a wave splitter with a channel pitch of 750 micrometers may be provided to improve the wave splitting effect.
In some embodiments, as shown in fig. 4 and 6, a light-emitting ferrule assembly 400 is also included; the light emitting ferrule assembly 400 is configured as a single mode ferrule assembly.
In this embodiment, when the optical module transmits a carrier signal, if the optical fiber-transmitting ferrule assembly 400 is inserted with a single-mode fiber, since the optical fiber-transmitting ferrule assembly 400 is a single-mode ferrule assembly and the internal switching fiber is also a single-mode fiber, the optical fiber-transmitting ferrule assembly 400 can be well coupled with an external single-mode fiber, and can realize long-distance transmission; if the optical transmission ferrule assembly 400 is inserted with a multimode fiber, since the core diameter of the multimode fiber is larger than that of the switching fiber, all carrier signals output by the switching fiber can be received by the multimode fiber, and the loss of the carrier signals is small in short-distance transmission. Therefore, the optical transmission ferrule assembly 400 can be compatible with single-mode and multi-mode optical fibers in some application scenarios of short-distance transmission.
In combination with the feature that the optical module ferrule assembly 100 is compatible with a single mode and a multimode fiber during short-distance transmission, both the optical receiving end and the optical transmitting end of the optical module provided in this embodiment can be compatible with the single mode and the multimode fiber in a short-distance application scenario, and meanwhile, the optical transmitting end can also be in butt joint with the single mode fiber to realize long-distance signal transmission.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, the invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".
Claims (10)
1. An optical module ferrule assembly, comprising a first optical fiber and a second optical fiber, wherein:
the first optical fiber is connected with the second optical fiber; the second optical fiber is used for connecting an external optical fiber to be accessed so as to receive a carrier signal input by the external optical fiber to be accessed and transmit the carrier signal to the first optical fiber; the first optical fiber is used for transmitting the received carrier signal to an optical receiving unit in the optical module; the external optical fiber to be accessed is a single mode optical fiber or a multimode optical fiber;
the core diameter of the first optical fiber is smaller than that of the second optical fiber, and the core diameter of the second optical fiber is between that of the multimode optical fiber and that of the single-mode optical fiber.
2. The optical module ferrule assembly of claim 1, wherein the first optical fiber has a core diameter that is larger than a core diameter of a single mode optical fiber.
3. The optical module ferrule assembly of claim 2, wherein the first optical fiber has a core diameter of 13 microns and the second optical fiber has a core diameter of 30 microns.
4. The optical module ferrule assembly of claim 1, further comprising a base, a tube cap, a first ferrule, and a second ferrule, wherein:
the base is connected with the pipe cap, the first optical fiber is embedded in the first plug core, and the second optical fiber is embedded in the second plug core;
the first inserting core is embedded in the base, and two ends of the second inserting core are respectively embedded in the base and the pipe cap.
5. The optical module ferrule assembly of claim 4, further comprising a first ferrule and a second ferrule, wherein the first ferrule is sleeved on the first ferrule and embedded in the base; the second ceramic sleeve is sleeved on the second inserting core and embedded in the pipe cap.
6. The optical module ferrule assembly of claim 5, wherein both ends of the first ceramic sleeve are embedded in the base and the cap, respectively; or:
and two ends of the second ceramic sleeve are embedded in the base and the pipe cap respectively.
7. The optical module ferrule assembly of claim 1, further comprising a base, a tube cap, a first ferrule, and a second ferrule, wherein:
the base is connected with the pipe cap; the first optical fiber is embedded in the first plug core, and the second optical fiber is embedded in the second plug core;
the second inserting core is embedded in the pipe cap, and two ends of the first inserting core are respectively embedded in the base and the pipe cap.
8. A fiber optic module comprising the fiber optic module ferrule assembly of any one of claims 1-7.
9. The optical module according to claim 8, further comprising a light receiving unit in which a splitter is provided, the channel pitch of the splitter being set to more than 250 μm.
10. The optical module of claim 8 or 9, further comprising an optical transmit ferrule assembly; the light emitting ferrule assembly is configured as a single mode ferrule assembly.
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| CN202220444402.0U CN217443582U (en) | 2022-03-03 | 2022-03-03 | Optical module lock pin assembly and optical module |
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| CN202220444402.0U CN217443582U (en) | 2022-03-03 | 2022-03-03 | Optical module lock pin assembly and optical module |
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