CN1567010A - Fiber protection sleeve - Google Patents

Abstract

The invention provides an optical fiber protective sleeve which is used for protecting optical fibers of an optical transceiver module and can also be used for protecting connecting optical fibers of any electronic equipment. The optical fiber protection sheath comprises a sheath body and an elastic ring. The protective sleeve body is coupled with the optical fiber and the lantern ring, and the elastic ring is arranged between the outer side of the lantern ring and the protective sleeve body. The elastic ring is adhered to the protective sleeve body by using a thermosetting adhesive. The optical fiber protective sleeve also comprises an elastic layer which is arranged between the protective sleeve body and the thermosetting adhesive and further improves the impact buffering capacity. The optical fiber protective sleeve can not only provide connection protection between the optical fiber and the optical transceiving component and buffer impact force, but also does not influence the transmission position required by the optical fiber, and effectively improves the optical signal transmission capability.

Description

Fiber protection sleeve

technical field

The invention relates to an optical fiber protective sleeve, in particular to an optical fiber protective sleeve of an optical transceiver module.

Background technique

With the popularization of computers and the rapid development of network technology, the use of the network can quickly obtain information or provide services. Optoelectronic communication can provide fast and massive information transmission, therefore, the optoelectronic industry is valued by people from all walks of life and related industries. The photoelectric industry, which is currently developing rapidly, is an application field generated by combining electronics (Electronics) and optics (Optics). One of the key components is an optical transceiver module, which includes a transmitter (Transmitter) and a receiver (Receiver) or integrates the two into a transceiver (Transceiver).

The function of the transmitter is to convert the electrical signal into an optical signal for transmission. The transmitter is generally distinguished according to the light source, and the light source of optical fiber communication is mainly light-emitting diode and laser diode, because the laser diode has high output power, fast transmission speed, and small light angle (meaning that the efficiency of light source coupling into the optical fiber is relatively low) High) and narrow spectrum (less dispersion), so it is more suitable for medium and long-distance transmission. As for light-emitting diodes, it is more suitable for short-distance transmission because of its low cost and ease of use (simple driving and compensation circuits). distance transmission purposes. Among them, laser diodes or semiconductor lasers (Semiconductor Lasers) have the advantages of small size, low power consumption, fast response, impact resistance, long life, high efficiency and low price, and are widely used in optoelectronic system products.

The main function of the optical receiver is to convert the received optical signal into an electrical signal, and the most critical component is the detector. The photodetector uses light to irradiate the photodiode (Photo Diode) to generate enough energy to excite paired electron-hole pairs, and thus generate a current signal.

In order to facilitate the connection between the optical transceiver module and related computer equipment, the optical signal input and output ends of the optical transceiver module are often directly connected to an optical fiber coupled to the optical transceiver module, and the other end of the optical fiber is coupled to a connector. When the optical transceiver module is to be connected, the connector only needs to be inserted into the corresponding connector of the relevant computer equipment, and the optical transceiver module can be used to provide the optical signal transmission and reception service of the computer equipment.

Due to the extremely high precision requirements of the relevant components of the optoelectronic system, it is necessary to use finely crafted and high-tech production equipment for the production of optoelectronic components. And in the process of connection, some mechanical errors will cause optical signal loss (Loss), so that the communication quality will be degraded, so special attention must be paid to its accuracy.

As shown in FIG. 1 , it is a schematic diagram of an optical transceiver module with a connecting optical fiber in the prior art. As shown in FIG. 1 , one end of the optical fiber 120 is connected to a connector 130 for connecting with related computer equipment, and the other end is connected to the optical transceiver module 100 . And the protective sleeve 110 is used to protect the optical fiber 120 at the connection.

Traditionally, in order to protect the optical fiber 120 and the ferrule located at the front end and coupled with the optical transceiver module, a protective sleeve is adhered with thermosetting adhesive to couple the optical fiber with the ferrule of the optical transceiver module. However, when the material of the thermosetting adhesive is cured, it will produce a certain shrinkage rate, and it also has considerable thermal expansion when the temperature changes. Therefore, it will cause the problem of the front and rear displacement of the optical fiber and its front ferrule, and it is easy to cause the loosening of the ferrule. , which is not conducive to the transmission of optical signals.

How to effectively reduce the influence of the optical fiber protective sleeve and the optical transceiver module after assembly, so that the optical fiber can maintain the accuracy of the relative position of the components of the optical transceiver module, which can not only improve the quality of optical communication, but also improve the efficiency of optical fiber transmission. The production of optical communication products can be significantly improved, which is expected by manufacturers and users.

After the optical transceiver module of the above invention is connected to the optical fiber, the quality of optical fiber transmission is degraded due to the assembly of the optical fiber protection sleeve. Therefore, it is necessary to provide an optical fiber protective sleeve, which can not only protect the optical fiber but also not affect the quality of optical communication after the optical transceiver module is connected to the optical fiber.

Contents of the invention

One of the objectives of the present invention is to provide an optical fiber protective sleeve to effectively protect the connection between the optical fiber and the optical transceiver module.

Another object of the present invention is to provide a protective cover for optical fiber, so as to effectively improve the quality and product yield of optical communication.

According to the purpose mentioned above, the present invention provides an optical fiber protection sleeve, which is used for coupling and protection of an optical fiber of an optical transceiver module and a ring, and can also be used for the protection of connecting optical fibers of any electronic equipment. The optical fiber protective cover includes a protective cover body and an elastic ring. The protective sheath body is coupled to the optical fiber and the ferrule, and the elastic ring is installed between the outside of the ferrule and the protective sheath body. The elastic ring is adhered to the protective sheath body with a thermosetting adhesive, and has a buffer function to provide a buffer between the thermosetting adhesive and the optical fiber.

The above-mentioned elastic ring includes a silicone elastic ring, which can be directly formed on the outside of the collar, or an independent silicone elastic ring coupled to the outside of the collar. The above-mentioned thermosetting adhesive is an epoxy resin adhesive, the collar is a metal collar, and the protective sheath body can be a protective sheath body made of a silicone material.

In the present invention, an elastic layer, such as a silicone elastic layer, can be further added between the protective sheath body and the thermosetting adhesive, so as to further provide the optical fiber buffering capacity.

Therefore, the optical fiber protective sleeve of the present invention can not only provide connection protection between the optical fiber and the optical transceiver assembly and buffer the impact force, but also not affect the required transmission position of the optical fiber, and effectively improve the ability of optical signal transmission.

Description of drawings

The technical solutions and other beneficial effects of the present invention will be apparent through the detailed description of specific embodiments of the present invention below in conjunction with the accompanying drawings.

In the attached picture,

Fig. 1 is a schematic diagram of an optical transceiver module with a connecting optical fiber in the prior art;

Fig. 2 is a schematic cross-sectional view of the combination of the optical fiber and the optical transceiver module in the first preferred embodiment of the optical fiber protective sleeve of the present invention;

Fig. 3 is a schematic cross-sectional view of the combination of the optical fiber and the optical transceiver module in the second preferred embodiment of the optical fiber protective sleeve of the present invention; and

Fig. 4 is a schematic cross-sectional view of the combination of the optical fiber and the optical transceiver module in the third preferred embodiment of the optical fiber protective sleeve of the present invention.

Detailed ways

The invention provides an optical fiber protective sleeve, which can not only protect the optical fiber of the optical transceiver module, but also eliminate the optical fiber displacement caused when the protective sleeve is fixed. The technical content of the present invention will be clearly described below with illustrations and detailed descriptions. After those skilled in the art understand the preferred implementation mode of the present invention, they can be changed and modified by the technology of the present invention without departing from it. spirit and scope of the invention.

Fig. 2 is a first preferred embodiment of the optical fiber protective sleeve of the present invention, and a schematic cross-sectional view of the combination of the optical fiber and the optical transceiver module. As shown in FIG. 2 , the housing (Housing) 210 of the optical transceiver module is, for example, a T-shaped, convex or other housing, on which a ferrule 230 is connected and an optical fiber 220 is coupled.

Since the inner side of the optical fiber protective sleeve of the optical fiber transceiver module in the prior art uses a thermosetting adhesive, the protective sleeve, the optical fiber and the ferrule are fixed together. Therefore, when the thermosetting adhesive is cured, it will cause displacement between the optical fiber and the front ferrule, thereby causing loosening and deviation of the optical fiber. When the optical transceiver module is used at different temperatures, so that the thermosetting adhesive is thermally deformed, it will also cause loosening and deviation of the optical fiber. It will result in a decrease in the quality of optical communication and a decrease in product yield. And when the optical transceiver module is subjected to impact force, the impact force will be directly transmitted to the optical fiber and the ferrule by the thermosetting adhesive.

In the first preferred embodiment of the optical fiber protective sleeve of the present invention, a silicone ring 240 is used to couple between the ferrule 230 and the protective sleeve 250 . When performing the process of fixing the protective cover 250 on the collar 230 , the silicone ring 240 is placed on the outer side of the collar 230 first, and then the protective cover 250 and the collar 230 are adhered together with a thermosetting adhesive 260 . Therefore, when the thermosetting adhesive 260 is cured, or when the temperature changes and is impacted, its influence on the position of the optical fiber 220 is reduced, and of course the phenomenon of displacement of the optical fiber 220 is reduced, so the quality of optical signal transmission can be maintained. In a better transmission state, the protective sleeve 250 also provides effective protection for the optical fiber 220 . Wherein the thermosetting adhesive 260 can be an adhesive made of materials such as epoxy resin (Epoxy Resin). The aforementioned collar 230 can be a metal collar made of metal material.

Fig. 3 is a second preferred embodiment of the optical fiber protective sleeve of the present invention, and a schematic cross-sectional view of the assembly of the optical fiber and the optical transceiver module. As shown in Figure 3, this embodiment uses a silicone ring 270 to wrap the collar 230 to provide a buffer force. 270 has a larger modulus of elasticity, and shields most of the optical fiber 220 in contact with the area of the thermosetting adhesive 280, so that when the thermosetting adhesive 280 is cured and subjected to thermal strain due to temperature changes, it will have the least impact on the optical fiber 220, so as to ensure Optical fiber 220 is capable of transmitting optical signals. Since the outer protective sleeve 250 and the inner silicone ring 270 have better elasticity, the thermosetting adhesive 280 therein provides the optical fiber 220, and the effective adhesion between the protective sleeve 250 and the silicone ring 270 does not cause the optical fiber 220 loss of signal transmission. Therefore, not only the problem of optical fiber displacement caused by the optical fiber protective sleeve in the prior art is improved, but also the connection ability between the optical fiber and the ferrule is effectively provided, and the buffering ability of the optical fiber under impact is effectively improved.

Fig. 4 is a third preferred embodiment of the optical fiber protective sleeve of the present invention, and a schematic cross-sectional view of the combination of the optical fiber and the optical transceiver module. As shown in FIG. 4 , this embodiment further changes the second embodiment to obtain better impact buffering force and effectively protect the optical fiber 220 . In this embodiment, an elastic layer 300 is used to couple between the protective cover 250 and the thermosetting adhesive 280. The elastic layer 300 can also be made of a material with a relatively large elastic coefficient such as silica gel, which can be directly coated or applied. It can be directly formed on the inner side of the protective cover 250 by means of injection, etc., or an independent silicone elastic component can be made first, and then installed on the protective cover 250, or adhered thereto. This embodiment not only utilizes the silicone ring 270, but also utilizes the elastic layer 300, both of which have better elasticity. Therefore, when the thermosetting adhesive 280 provides the optical fiber 220, the elastic layer 300 and the silicone ring 270 have effective adhesion, but not The location that affects the effective transmission of the optical fiber 220 also provides shock absorbing capability in the event of an impact.

Among them, the above-mentioned silicone ring can be directly formed on the outside of the collar by coating, or an independent silicone ring component can be formed first, then installed on the collar, and then adhered to the collar without detachment spirit and scope of the invention. Moreover, the silicone ring mainly provides the function of elasticity and cushioning, and the present invention does not limit it to be made of silicone, as long as the elastic ring has an elastic function, it can be used in the optical fiber protective sleeve of the present invention. The protective cover can be made of any elastic plastic material, and can also be made of silicone material.

Claims (10)

1. An optical fiber protective sleeve used for coupling and protection of an optical fiber of an optical transceiver module and a ring, characterized in that: the optical fiber protective sleeve at least includes: a protective sheath body, one end coupled to the optical fiber; and An elastic ring is coupled to the collar and interposed between the collar and the protective cover body. 2. The optical fiber protective sleeve according to claim 1, wherein the elastic ring is adhered to the protective sleeve body by a thermosetting adhesive. 3. The optical fiber protective sleeve according to claim 1, wherein the elastic ring covers the optical fiber and the ferrule. 4. The optical fiber protection sleeve according to claim 1, wherein the elastic ring comprises a silicone elastic ring. 5. The optical fiber protection sleeve according to claim 4, wherein the silicone elastic ring is directly molded on the outer side of the sleeve. 6. The optical fiber protection sleeve according to claim 4, wherein the silicone elastic ring is an independent silicone elastic ring coupled to the outer side of the sleeve. 7. The optical fiber protective sleeve according to claim 1, wherein the thermosetting adhesive comprises an epoxy adhesive. 8. The optical fiber protective sleeve according to claim 1, wherein the ferrule comprises a metal ferrule. 9. The optical fiber protective cover according to claim 1, wherein the protective cover body comprises a silicone protective cover body. 10. The optical fiber protective sleeve according to claim 1, further comprising a silicone elastic layer between the protective sleeve body and the thermosetting adhesive.

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