Optical fiber terminal equipment, optical transceiver carrier, and optical fiber transmission wiring.

Abstract

To provide optical fiber terminal equipment, optical fiber transmission wiring, and optical transceiver carriers that significantly improve the accuracy of optical fiber fault detection, reduce the difficulty of operation, and drastically reduce the human resources and financial costs for wiring detection. [Solution] In the optical fiber terminal device 200, the optical transceiver carrier 210 includes an optical fiber, an invisible light transmitter 211, an invisible light receiver 212, a visible light transmitter 113, and an optical fiber connector 114. The invisible light transmitter 211 is configured to emit a first invisible light toward the optical fiber connector 114 and includes a first connection element. The invisible light receiver 212 is configured to receive a second invisible light from the optical fiber connector 114 and includes a second connection element. The visible light transmitter 113 is configured to emit visible light toward the optical fiber connector 114. One of the first connection element and the second connection element is a flexible flat cable.

Description

Technical Field

[0001] The present invention generally relates to optical fiber terminal devices, optical transmission and reception carriers, and their optical fiber transmission wiring.

Background Art

[0002] An optical network terminal (ONT) is a device configured to communicate with a local end device (usually called an optical line terminal, OLT) of a communication carrier's passive optical network (PON). This mainly has the function of converting the passive optical network signal of the user terminal into an electrical signal of a device used by the communication carrier and adjusting the multiplexing between optical network units. However, the optical network terminal is usually installed in the indoor space, and there is a low-voltage enclosure between the optical network terminal and the local end device, and the low-voltage enclosure is also installed in the indoor space. In addition, generally, there is at least 1 to 2 kilometers of wiring between the optical network terminal and the low-voltage enclosure, and the length of the wiring between the low-voltage enclosure and the local end device (usually outside the building) needs to be longer (depending on the scale of the building). Therefore, when the network is unavailable, the communication carrier's maintenance technician needs to enter the indoor space to check and repair the problem. In addition, the two sections of wiring, which are several kilometers long, have to be tested separately to perform wiring fault detection. Currently, passive optical network products are mainly used in wide-area regions, where it is necessary to dispatch technicians to the home for on-site troubleshooting, which is costly in terms of high labor costs.

[0003] In addition, conventional methods used to detect wiring problems between optical fiber terminals and low-voltage enclosures involve disconnecting the circuit from the optical network terminal and the low-voltage enclosure, and then injecting red light from one of the two ends of the circuit using a portable visible fault detector (VFL), such as a portable red light detection pen. Theoretically, if the optical fiber circuit is damaged, red light will accumulate there, so a spot of red light may be visible from the outside of the circuit. That is, if the circuit is intact (undamaged), theoretically no red light should be visible on the surface of the circuit, and a clear red light may be visible at the other end of the circuit. However, due to the long detection distance, the red light from the red light detection pen itself diverges, resulting in a serious problem of light attenuation. Therefore, the red light from the red light detection pen naturally forms on the surface of the circuit due to divergence, and as a result, it becomes impossible to correctly determine whether the red light generated on the surface of the circuit is due to wiring damage or to the divergence of red light. In addition, due to serious light attenuation issues, even if the wiring is intact, the red light emitted from the other end of the wiring becomes unclear, resulting in a problem where detection technicians cannot accurately determine whether the wiring is damaged. Furthermore, because of the long transmission distance between the low-voltage enclosure and the telecommunications operator's central station equipment, proper inspection requires more advanced testing equipment than basic red light detectors, otherwise the aforementioned problems still persist.

[0004] In Chinese Patent Application Publication No. 117471615, embodiments of the invention provide a ferrule assembly, an optical fiber connector, an optical network device, and an optical communication system. The insertion core assembly comprises a first insertion core, a second insertion core, an insertion core tail handle portion, and a light guide portion. One end of the insertion core tail handle portion is fixedly connected to the first insertion core, and the other end of the insertion core tail handle portion is fixedly connected to the second insertion core, and the insertion core tail handle portion comprises a light-transmitting region. The light guide portion penetrates the ferrule tail handle portion and is used to emit detection light incident on the light guide portion from the light-transmitting region. A user can directly determine whether a network port is idle by determining whether the light-transmitting region transmits detection light. For example, a network port connected to an optical fiber connector that flashes detection light is a non-idle port (non-idle resource), a network port connected to an optical fiber connector that does not flash detection light is an idle port (idle resource), and a network port connected to an optical fiber connector that does not flash detection light is an idle port (idle resource). Furthermore, it becomes easier to build and maintain networks. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Chinese Patent Application Publication No. 117471615 Specification [Overview of the project]

[0006] This disclosure relates to an optical fiber terminal device and its optical transceiver carrier, which can improve upon the aforementioned conventional problems. According to one embodiment of the present invention, an optical transceiver carrier is provided. The optical transceiver carrier includes an optical fiber connector, an invisible light transmitter, an invisible light receiver, and a visible light transmitter. The invisible light transmitter is configured to emit a first invisible light toward the optical fiber connector and includes a first connection element. The invisible light receiver is configured to receive a second invisible light from the optical fiber connector and includes a second connection element. The visible light transmitter is configured to emit visible light toward the optical fiber connector. One of the first and second connection elements is a flexible printed circuit board.

[0007] According to another embodiment of the present invention, an optical fiber terminal device is provided. The optical fiber terminal device includes a light source driver and an optical transceiver carrier. The optical transceiver carrier includes an optical fiber connector, an invisible light transmitter, an invisible light receiver, and a visible light transmitter. The invisible light transmitter is configured to emit first invisible light toward the optical fiber connector and includes a first connection element, which is electrically connected to the light source driver. The invisible light receiver is configured to receive second invisible light from the optical fiber connector and includes a second connection element, which is electrically connected to the light source driver. The visible light transmitter is configured to emit visible light toward the optical fiber connector. One of the first and second connection elements is a flexible printed circuit board.

[0008] According to another embodiment of the present invention, an optical fiber transmission cable is provided. The optical fiber transmission cable includes an optical fiber, an invisible light transmitter, an invisible light receiver, a visible light transmitter, and an optical fiber connector. The optical fiber has a first end and a second end. The invisible light transmitter is positioned adjacent to the first end and configured to emit a first invisible light. The invisible light receiver is positioned adjacent to the first end and configured to receive a second invisible light. The visible light transmitter is positioned adjacent to the first end and configured to emit visible light. The optical fiber connector is connected to the second end.

[0009] According to another embodiment of the present invention, an optical fiber terminal device is provided. The optical fiber terminal device includes an optical fiber transmission cable, a drive current circuit, and a processor. The optical fiber transmission cable includes an optical fiber, an invisible light transmitter, an invisible light receiver, a visible light transmitter, and an optical fiber connector. The optical fiber has a first end and a second end. An invisible light transmitter is positioned adjacent to the first end and configured to emit a first invisible light. An invisible light receiver is positioned adjacent to the first end and configured to receive a second invisible light. A visible light transmitter is positioned adjacent to the first end and configured to emit visible light. An optical fiber connector is connected to the second end. A drive current circuit is electrically connected to the visible light transmitter. A processor is electrically connected to the drive current circuit and configured to control the drive current circuit to drive the visible light transmitter.

[0010] The above and other aspects of the present invention will be better understood in relation to the following detailed description of preferred but non-limiting embodiments. The following description will be made with reference to the accompanying drawings. [Brief explanation of the drawing]

[0011] [Figure 1] Figure 1 is a schematic diagram of an optical fiber terminal device installed in a home space according to one embodiment of the present invention.

[0012] [Figure 2] Figure 2 is a functional block diagram of the optical fiber terminal device shown in Figure 1.

[0013] [Figure 3] Figure 3 is a schematic diagram of the optical fiber transmission wiring of the optical fiber terminal device shown in Figure 2.

[0014] [Figure 4] Figure 4 is a schematic diagram of a portion of the optical fiber transmission wiring shown in Figure 3.

[0015] [Figure 5]FIG. 5 is a functional block diagram of an optical fiber terminal device according to another embodiment of the present invention.

[0016] [Figure 6] FIG. 6 is a partial schematic diagram of the optical transmission / reception carrier of FIG. 5.

[0017] [Figure 7] FIG. 7 is a three-dimensional schematic diagram of the optical transmission / reception carrier of FIG. 5.

[0018] [Figure 8] FIG. 8 is a schematic diagram in which the optical transmission / reception carrier of FIG. 7 is connected to the main circuit board. Detailed Description of the Invention

[0019] Referring to FIGS. 1 to 4, FIG. 1 is a schematic diagram in which an optical fiber terminal device 100 according to an embodiment of the present invention is installed in an indoor space HS, FIG. 2 is a functional block diagram of the optical fiber terminal device 100 of FIG. 1, FIG. 3 is a schematic diagram of an optical fiber transmission wiring 110 of the optical fiber terminal device 100 of FIG. 2, and FIG. 4 is a partial schematic diagram of the optical fiber transmission wiring 110 of FIG. 3.

[0020] As shown in FIGS. 1 and 2, the optical fiber terminal device 100 can be configured, for example, within the indoor space HS. In one embodiment, the optical fiber terminal device 100 is, for example, an optical network terminal (ONT) product. The optical fiber terminal device 100 can exchange data between different networks or protocols. Further, the optical fiber terminal device 100 is, for example, a gateway, a router, etc. The optical fiber terminal device 100 can be configured to implement the ITU-T standard of a gigabit passive optical network (GPON).

[0021] As shown in FIGS. 1 and 2, the optical fiber terminal device 100 can be electrically connected to the low-voltage enclosure 10 via the transmission wiring module 20. The transmission wiring module 20 includes an optical fiber transmission wiring 21 and an optical fiber connector 22, where the optical fiber connector 22 is connected to the optical fiber terminal device 100. The optical fiber connector 22 is, for example, an SC / UPC optical fiber connector. The low-voltage enclosure 10 and the optical fiber terminal device 100 can exchange signals (data, commands, etc.) via the transmission wiring module 20. The low-voltage enclosure 10 and the regional operation device 30 are connected via a wiring 40 (for example, an optical fiber wiring) and can exchange signals. The regional operation device 30 is, for example, a device arranged by a telecommunications carrier outside the indoor space HS, such as a building-wide distribution box, etc.

[0022] As shown in FIGS. 2 to 4, the optical fiber terminal device 100 includes an optical fiber transmission wiring 110, a drive current circuit 120, a processor 130, a light source driver 140, and a trigger 150. The drive current circuit 120, the processor 130, and the light source driver 140 are, for example, integrated circuits formed by a semiconductor process, such as a semiconductor chip, a semiconductor package, etc. In one embodiment, at least two of the drive current circuit 120, the processor 130, and the light source driver 140 can be integrated into a single component. The trigger 150 is, for example, a switch, a button, etc.

[0023] As shown in Figures 2 to 4, the optical fiber transmission wiring 110 includes an invisible light transmitter 111, an invisible light receiver 112, a visible light transmitter 113, an optical fiber connector 114, an optical fiber 115, a wavelength division multiplexer 116, a first lens 117A, a second lens 117B, and a third lens 117C. The optical fiber 115 has a first end 1151 and a second end 1152. The invisible light transmitter 111 is positioned adjacent to the first end 1151 and configured to emit a first invisible light L1. The invisible light receiver 112 is positioned adjacent to the first end 1151 and configured to receive a second invisible light L2. The visible light transmitter 113 is positioned adjacent to the first end 1151 and configured to emit a visible light L3. The optical fiber connector 114 is connected to the second end 1152. As a result, it is possible to detect whether the transmission wiring module 20 between the optical fiber terminal device 100 and the low-voltage enclosure 10, and / or the wiring 40 between the low-voltage enclosure 10 and the regional operating device 30 are faulty (e.g., defective or malfunctioning) via visible light L3.

[0024] Furthermore, if the transmission wiring module 20 between the optical fiber terminal device 100 and the low-voltage enclosure 10 is not faulty, visible light L3 can be normally transmitted to the low-voltage enclosure 10 via the transmission wiring module 20. In one embodiment, the low-voltage enclosure 10 includes a beam splitter (not shown) and an observation hole (not shown), the beam splitter configured to direct visible light L3 to the observation hole. If the transmission wiring module 20 between the optical fiber terminal device 100 and the low-voltage enclosure 10 is not faulty, visible light L3 can be observed (with the naked eye) through the observation hole. If the transmission wiring module 20 between the optical fiber terminal device 100 and the low-voltage enclosure 10 is faulty, visible light L3 cannot be observed through the observation hole. Since the optical fiber terminal device 100 itself can emit visible light L3, the telecommunications carrier's maintenance technicians do not need to enter the home space HS to perform wiring fault detection (fault detection), and residents of the home space HS can detect faults through the observation hole in the low-voltage enclosure 10. In another embodiment, based on a similar principle, if the wiring 40 between the low-voltage enclosure 10 and the local operating device 30 is not faulty, visible light L3 can be observed from the local operating device 30. If the wiring 40 between the low-voltage enclosure 10 and the local operating device 30 is faulty, visible light L3 cannot be observed from the local operating device 30.

[0025] In another embodiment, the system can automatically determine whether a wiring fault exists. For example, the low-voltage enclosure 10 or the local operating device 30 may be equipped with a photodetector (not shown) for detecting visible light L3. When the photodetector detects visible light L3, a notification signal is emitted. A maintenance technician of the telecommunications carrier can learn of the wiring status via the notification signal.

[0026] In one embodiment, the wavelengths of the first invisible light L1, the second invisible light L2, and the visible light L3 are different. For example, the wavelength of the first invisible light L1 is 1310 nanometers (nm), the wavelength of the second invisible light L2 is 1490 nanometers, and the visible light L3 is, for example, red light, with a wavelength in the range of, for example, 620 to 750 nanometers. However, the wavelength of the invisible light in this paper may be any wavelength outside the visible spectrum, and embodiments of the present invention are not limited thereto. In addition, the wavelength of the visible light L3 may be any wavelength within the visible spectrum, and the wavelength range of the visible light spectrum is, for example, between 360 to 830 nanometers. In one embodiment, the wavelength of the visible light L3 is, for example, 650 nm. By designing the wavelength of the visible light L3, the visible light L3 does not interfere with the signals of the first invisible light L1 and the second invisible light L2.

[0027] As shown in Figure 3, the optical fiber transmission wiring 110 has three connectors (invisible light transmitter 111, invisible light receiver 112, and visible light transmitter 113), and therefore belongs to a module assembly with a three-phase light source (e.g., Tri-OSA (Triplexer Optical Subassembly)).

[0028] As shown in Figures 2 to 4, the invisible light transmitter 111 of the optical fiber transmission wiring 110 includes a first circuit board 1111, an invisible light source 1112, and at least one first pin 1113. The invisible light source 1112 is located on the first circuit board 1111 and electrically connected. The first pin 1113 is located on the first circuit board 1111 and electrically connected. The first pin 1113 may be electrically connected to the light source driver 140 in order to be controlled by the light source driver 140.

[0029] As shown in Figures 2 to 4, the invisible light receiver 112 of the optical fiber transmission wiring 110 includes a second circuit board 1121, a light receiving unit 1122, and at least one second pin 1123. The light receiving unit 1122 is located on the second circuit board 1121 and electrically connected. The second pin 1123 is located on the second circuit board 1121 and electrically connected. The second pin 1123 may be electrically connected to the light source driver 140 for control by the light source driver 140.

[0030] As shown in Figures 2 to 4, the visible light transmitter 113 of the optical fiber transmission wiring 110 includes a third circuit board 1131, a visible light source 1132, and at least one third pin 1133. The visible light source 1132 is located on the third circuit board 1131 and electrically connected. The third pin 1133 is located on the third circuit board 1131 and electrically connected. The third pin 1133 may be electrically connected to the drive current circuit 120 in order to be controlled by the drive current circuit 120.

[0031] In this embodiment, the first pin 1113, the second pin 1123, and the third pin 1133 are, for example, metal pins.

[0032] The first pin 1113, second pin 1123, and third pin 1133 of the optical fiber transmission wiring 110 may be electrically connected to the main circuit board (not shown) of the optical fiber terminal device 100. The aforementioned drive current circuit 120, processor 130, light source driver 140, and trigger 150 may also be located on and electrically connected to the main circuit board (not shown) of the optical fiber terminal device 100. The optical fiber connector 114 of the optical fiber transmission wiring 110 may be exposed from the housing (not shown) of the optical fiber terminal device 100 to receive connection (e.g., insertion) of the optical fiber connector 22 of the transmission wiring module 20. In one embodiment, the optical fiber connector 114 includes a standard connector (SC), oblique physical contact (APC), and super-physical contact (UPC).

[0033] As shown in Figure 4, the first end 1151 of the optical fiber 115 is positioned adjacent to the invisible light transmitter 111, the invisible light receiver 112, and the visible light transmitter 113. The optical fiber 115 includes a fiber core 115h located inside the optical fiber 115 for transmitting a first invisible light L1, a second invisible light L2, and visible light L3. The fiber core 115h is made of glass or plastic. The first invisible light L1, the second invisible light L2, and the visible light L3 undergo total internal reflection within the fiber core to achieve the purpose of long-distance transmission. In one embodiment, the optical fiber 115 is a single-mode fiber (SMF), and the fiber core 115h has a diameter between 8 micrometers (μm) and 10 micrometers. The first invisible light L1 can be incident on the end face of the first end 1151 of the optical fiber 115, and after entering the fiber core 115h, the first invisible light L1 is transmitted through the optical fiber 115 to the low-voltage enclosure 10. A second invisible light L2 (for example, from the low-voltage enclosure 10) is transmitted to the invisible light receiver 112 via the fiber core 115h of the optical fiber 115. Visible light L3 can be incident on the end face of the first end 1151 of the optical fiber 115, and after entering the fiber core 115h, the visible light L3 is transmitted to the low-voltage enclosure 10 via the optical fiber 115.

[0034] As shown in Figure 4, the wavelength division multiplexer 116 is configured to direct the first invisible light L1 and visible light L3 to the first end 1151 of the optical fiber 115 and the second invisible light L2 to the invisible light receiver 112. In one embodiment, the wavelength division multiplexer 116 includes a dielectric filter, an interference filter, an array waveguide diffraction grating (AWG), or a fiber Bragg grating (FBG), and is configured to reflect the first invisible light L1 and the second invisible light L2 and allow the visible light L3 to pass through. Furthermore, the wavelength division multiplexer 116 may reflect the first invisible light L1 to the first end 1151 of the optical fiber 115, reflect the second invisible light L2 to the invisible light receiver 112, and allow the visible light L3 to pass through and enter the first end 1151 of the optical fiber 115.

[0035] As shown in Figure 4, the first end 1151 of the optical fiber 115 and the invisible light source 1112 face the wavelength division multiplexer 116, and the wavelength division multiplexer 116 can reflect the first invisible light L1 emitted by the invisible light source 1112 back to the optical fiber 115. The first end 1151 of the optical fiber 115 and the light receiving unit 1122 face the wavelength division multiplexer 116, and the wavelength division multiplexer 116 can reflect the second invisible light L2 from the optical fiber 115 back to the light receiving unit 1122. The visible light source 1132, the wavelength division multiplexer 116, and the first end 1151 are arranged in a straight line, and the visible light L3 emitted by the visible light source 1132 passes through the wavelength division multiplexer 116 before entering the optical fiber 115.

[0036] As shown in Figure 4, the first lens 117A corresponds to the invisible light source 1112, which is a laser diode (LD). The first invisible light L1 emitted by the invisible light source 1112 is coherent light such as laser infrared light. Through the first lens 117A, the first invisible light L1 can be precisely incident on the fiber core 115h of the optical fiber 115. The second lens 117B corresponds to the light receiving unit 1122, and the second invisible light L2 is coherent light such as laser infrared light. Through the second lens 117B, the second invisible light L2 can be concentratedly incident on the light receiving unit 1122. The third lens 117C corresponds to the visible light source 1132, which is a light-emitting diode. The visible light L3 emitted by the visible light source 1132 is incoherent light such as red light. Through the third lens 117C, visible light L3 can be incident more precisely and intensively on the fiber core 115h of the optical fiber 115, thereby reducing the energy decay rate of visible light L3 and increasing the transmission distance of visible light L3. Compared to light emitted by a conventional red light detection pen that cannot accurately enter the fiber core 115h of the optical fiber 115, the visible light L3 generated by the optical fiber transmission wiring 110 of the embodiment of the present invention can be incident more precisely and intensively on the fiber core 115h of the optical fiber 115, thus increasing the transmission distance of visible light L3 and improving the accuracy of debugging.

[0037] Table 1 below shows the performance of the optical fiber terminal device 100 according to an embodiment of the present invention. In Table 1, length represents the length of the transmission wiring module 20, input power represents the power of visible light L3 emitted by the optical fiber terminal device 100, and attenuation represents the power attenuation of visible light L3 emitted by the optical fiber terminal device 100 after passing through the transmission wiring module 20. A larger value indicates greater attenuation.

[0038] [Table 1]

[0039] Table 2 below shows the performance of a conventional red light detection pen. In Table 2, "Length" represents the length of the transmission wiring module 20, "Input Power" represents the power of the red light emitted by the red light detection pen, and "Attenuation" represents the power attenuation of the red light emitted by the red light detection pen after it has passed through the transmission wiring module 20. A larger value indicates greater attenuation.

[0040] [Table 2]

[0041] Comparing Table 1 and Table 2, it can be seen that, under the same optical input power for the same length of single-mode fiber, the power attenuation of visible light L3 emitted by the optical fiber terminal device 100 of the embodiment of the present invention is less than that of red light emitted by a conventional red light detection pen. In one embodiment, the power of visible light L3 emitted by the optical fiber terminal device 100 is in the range of 1 microwatt (mW) to 3 mW.

[0042] In another embodiment, the optical fiber 115 is a multimode optical fiber (MMF), the fiber core 115h has a diameter between 50 μm and 62.5 μm, the first invisible light L1 and the second invisible light L2 are coherent or incoherent light, and the wavelengths of the first invisible light L1 and the second invisible light L2 are in the range of 850 nm to 1300 nm. The visible light L3 is incoherent light such as red light and is incident intensively and precisely on the fiber core 115h of the optical fiber 115 through a third lens 117C.

[0043] As shown in Figure 2, the drive current circuit 120 is electrically connected to the visible light transmitter 113 and configured to drive the visible light transmitter 113. In one embodiment, the drive current circuit 120 and the processor 130 can communicate via GPIO (General Purpose Input / Output) technology and / or PWM (Pulse Width Modulation).

[0044] As shown in Figure 2, the processor 130 is electrically connected to the drive current circuit 120 and configured to control the drive current circuit 120 to drive the visible light transmitter 113. In one embodiment, the processor 130 is, for example, a central processing unit (CPU). In addition, the processor 130 is electrically connected to the light source driver 140 and configured to control the light source driver 140 to drive the invisible light transmitter 111.

[0045] As shown in Figures 2 and 4, the light source driver 140 is electrically connected to the invisible light transmitter 111 and the invisible light receiver 112. The light source driver 140 can drive the invisible light transmitter 111 to emit a first invisible light L1. The light source driver 140 can transmit the signal of the second invisible light L2 received by the invisible light receiver 112 to the processor 130. In one embodiment, the light source driver 140 is, for example, a laser diode driver (LDD).

[0046] As shown in Figure 2, the trigger 150 is exposed from the housing (not shown) of the optical fiber terminal device 100 to receive external input commands (e.g., user trigger actions). The trigger 150 is electrically connected to the processor 130. When the trigger 150 is triggered, the processor 130 controls the drive current circuit 120 accordingly to drive the visible light transmitter 113, causing it to emit visible light L3 to perform the aforementioned wiring fault detection. The trigger 150 and the processor 130 can communicate via GPIO.

[0047] Referring to Figures 5 to 8, Figure 5 is a functional block diagram of an optical fiber terminal device 200 according to another embodiment of the present invention, Figure 6 is a partial schematic diagram of the optical transceiver carrier 210 of Figure 5, Figure 7 is a three-dimensional schematic diagram of the optical transceiver carrier 210 of Figure 5, and Figure 8 is a schematic diagram showing the optical transceiver carrier 210 of Figure 7 connected to the main circuit board 260.

[0048] In one embodiment, the optical fiber terminal device 100 in Figure 1 can be replaced with an optical fiber terminal device 200.

[0049] As shown in Figures 5 and 6, the optical fiber terminal device 200 includes an optical transceiver carrier 210, a drive current circuit 120, a processor 130, a light source driver 240, and a trigger 150, which are arranged on a main circuit board 260 (shown in Figure 8). The optical transceiver carrier 210 has the same function and application as the optical fiber transmission wiring 110 described above. The drive current circuit 120, processor 130, and light source driver 240 are integrated circuits formed by semiconductor processes, such as semiconductor chips and semiconductor packages. In one embodiment, at least two of the drive current circuit 120, processor 130, and light source driver 240 can be integrated into a single component.

[0050] As shown in Figures 1, 5, and 6, the optical transceiver carrier 210 includes an invisible light transmitter 211, an invisible light receiver 212, a visible light transmitter 113, an optical fiber connector 114, an optical fiber 115, a wavelength division multiplexer 116, a first lens 117A, a second lens 117B, and a third lens 117C. In one embodiment, the invisible light transmitter 211 is configured to emit a first invisible light L4 toward the optical fiber connector 114 and includes at least one first connection element 2113. The invisible light receiver 212 is configured to receive a second invisible light L5 from the optical fiber connector 114 and includes at least one second connection element 2123. The visible light transmitter 113 is configured to emit visible light L3 toward the optical fiber connector 114. In one embodiment, one of the first connection element 2113 and the second connection element 2123 is a flexible printed circuit. For example, the first connecting element 2113 is a flexible printed circuit (FPC), and the second connecting element 2123 is a pin. Compared to a pin, the flexible printed circuit is softer, more flexible, and has a lower signal attenuation rate than a pin. In this embodiment, the pin includes a metal pin, or the pin itself is a metal pin.

[0051] In one embodiment, as shown in Figures 1 and 5, it is possible to detect whether the transmission wiring module 20 between the optical fiber terminal device 200 and the low-voltage enclosure 10, and / or the wiring 40 between the low-voltage enclosure 10 and the regional operating device 30 are faulty (e.g., defective or faulty) via visible light L3.

[0052] Furthermore, if the transmission wiring module 20 between the optical fiber terminal 200 and the low-voltage enclosure 10 is not faulty, visible light L3 can be normally transmitted to the low-voltage enclosure 10 via the transmission wiring module 20. In one embodiment, the low-voltage enclosure 10 includes a beam splitter (not shown) and an observation hole (not shown), the beam splitter configured to direct visible light L3 to the observation hole. If the transmission wiring module 20 between the optical fiber terminal 200 and the low-voltage enclosure 10 is not faulty, visible light L3 can be observed (with the naked eye) through the observation hole. If the transmission wiring module 20 between the optical fiber terminal 200 and the low-voltage enclosure 10 is faulty, visible light L3 cannot be observed through the observation hole. Since the optical fiber terminal 200 itself can emit visible light L3, the telecommunications carrier's maintenance technicians do not need to enter the home space HS to perform wiring fault detection (fault detection), and residents of the home space HS can detect faults through the observation hole in the low-voltage enclosure 10. In another embodiment, based on a similar principle, if the wiring 40 between the low-voltage enclosure 10 and the local operating device 30 is not faulty, visible light L3 can be observed from the local operating device 30. If the wiring 40 between the low-voltage enclosure 10 and the local operating device 30 is faulty, visible light L3 cannot be observed from the local operating device 30.

[0053] In one embodiment, the wavelengths of the first invisible light L4, the second invisible light L5, and the visible light L3 are different. For example, the peak wavelength (Wp) of the first invisible light L4 is in the range of 1260 nm to 1280 nm. In another embodiment, the peak wavelength of the first invisible light L4 is in the range of 1265 nm to 1275 nm, for example, 1270 nm. The peak wavelength of the second invisible light L5 is in the range of 1575 nm to 1580 nm, for example, 1577 nm, and the visible light L3 is, for example, red light, with a peak wavelength in the range of 620 nm to 750 nm, for example, 650 nm. However, the wavelengths of invisible light in this paper may be any wavelength outside the visible spectrum, and embodiments of the present invention are not limited thereto.

[0054] By designing the wavelengths of the first invisible light L4 and the second invisible light L5, the optical fiber terminal device 200 can provide a transmission rate between 9.9 Gbit / s and 10 Gbit / s. In one embodiment, the optical fiber terminal device 200 can support the XGS-PON standard. XGS-PON belongs to a passive optical network (PON) standard that can provide symmetric data transmission of 10 Gbps, i.e., both the upstream and downstream rates are between 9.9 Gbit / s and 10 Gbit / s. In addition, the wavelength of visible light L3 may be any wavelength within the visible light spectrum, the wavelength range of the visible light spectrum being, for example, between 360 nm and 830 nm. In one embodiment, the wavelength of visible light L3 is, for example, 650 nm. By designing the wavelength of visible light L3, visible light L3 does not interfere with the signals of the first invisible light L4 and the second invisible light L5.

[0055] As shown in Figure 6, the invisible light transmitter 211 of the optical transceiver carrier 210 includes a first circuit board 2111, an invisible light source 2112, and the aforementioned first connection element 2113. The invisible light source 2112 is located on the first circuit board 2111 and electrically connected. The first connection element 2113 is located on the first circuit board 2111 and electrically connected. The first connection element 2113 may be electrically connected to the light source driver 240 in order to be controlled by the light source driver 240.

[0056] As shown in Figure 6, the invisible light receiver 212 of the optical transceiver carrier 210 includes a second circuit board 2121, a light receiving unit 2122, and the aforementioned second connection element 2123. The light receiving unit 2122 is located on the second circuit board 2121 and electrically connected. The second connection element 2123 is located on the second circuit board 2121 and electrically connected. The second connection element 2123 may be electrically connected to the light source driver 240 for control by the light source driver 240. In this embodiment, the second connection element 2123 is, for example, a pin. In another embodiment, the second connection element 2123 may be a flexible circuit board such as a flexible flat cable.

[0057] In another embodiment, both the first connecting element 2113 and the second connecting element 2123 are flexible printed circuits. Alternatively, one of the first connecting element 2113 and the second connecting element 2123 is a flexible printed circuit, and the other is a pin.

[0058] As shown in Figure 7, the optical transceiver carrier 210 further includes a housing 214, which has a first side 214s1, a second side 214s2, and a third side 214s3, where the first side 214s1, the second side 214s2, and the third side 214s3 are adjacent to each other and connected, where the invisible light transmitter 211, the invisible light receiver 212, the visible light transmitter 113, the wavelength division multiplexer 116, the first lens 117A, the second lens 117B, and the third lens 117C are located inside the housing 214, while the first connection element 2113, the second connection element 2123, and the third pin 1133 are exposed outside the housing 214 and connected to the main circuit board 260 (shown in Figure 8). The first connecting element 2113 extends outward relative to the first side surface 214s1, the second connecting element 2123 extends outward relative to the second side surface 214s2, and the third pin 1133 extends outward relative to the third side surface 214s3. In addition, the first circuit board 2111 is located on the first side surface 214s1, the second circuit board 2122 is located on the second side surface 214s2, and the third circuit board 1131 is located on the third side surface 214s3, and the first circuit board 2111, the second circuit board 2122, and the third circuit board 1131 are arranged, for example, perpendicular to each other.

[0059] As shown in Figure 7, the first connecting element 2113 includes a substrate 2113A, at least one contact 2113B, at least one pad 2113C, and at least one connecting line 2113D, where the contact 2113B, pad 2113C, and connecting line 2113D are formed on the substrate 2113A. The substrate 2113A is, for example, a flexible substrate. The contact 2113B may be electrically connected to the first circuit board 2111, and the connecting line 2113D can connect the contact 2113B and the pad 2113C, thereby electrically connecting the contact 2113B and the pad 2113C.

[0060] As shown in Figure 7, in this embodiment, the second connecting element 2123 extends along a straight line. For example, the second connecting element 2123 extends along a first direction (e.g., the X-axis) and does not have a bent shape. The third pin 1133 is, for example, an L-shaped pin, i.e., the third pin 1133 has a bent shape. For example, the third pin 1133 includes a first portion 1133A and a second portion 1133B connected to each other, where the first portion 1133A protrudes toward the third side surface 214s3 and extends along a second direction (e.g., the Z-axis), and the second portion 1133B extends from the first portion 1133A along the first direction. Since the second portion 1133B of the third pin 1133 and the second connecting element 2123 extend in the same direction, they can be connected to the same plane of the main circuit board 260 (the main circuit board 260 is shown in Figure 8). In another embodiment, the third pin 1133 can be replaced with a third connection element comprising a flexible circuit board (not shown), such as a flexible flat cable (FFC). The function and electrical characteristics of the third connection element are identical or similar to those of the third pin 1133. The flexible circuit board structure of the third connection element is similar to that of the first connection element 2113.

[0061] As shown in Figure 8, the first connection element 2113, the second connection element 2123, and the third pin 1133 of the optical transceiver carrier 210 can be electrically connected to the main circuit board 260 of the optical fiber terminal device 200. The aforementioned drive current circuit 120, processor 130, light source driver 240, and trigger 150 can also be located on and electrically connected to the main circuit board 260 of the optical fiber terminal device 200. The optical fiber connector 114 of the optical transceiver carrier 210 can be exposed from the housing 214 of the optical fiber terminal device 200 to receive connection (e.g., insertion) of the optical fiber connector 22 of the transmission wiring module 20.

[0062] As shown in Figure 8, the third pin 1133 can be inserted into the main circuit board 260 and electrically connected. For example, the second portion 1133B of the third pin 1133 can be inserted into the surface 260s of the main circuit board 260. The second portion 1133B is, for example, substantially perpendicular to the surface 260s of the main circuit board 260. The surface 260s is, for example, the top or bottom surface of the main circuit board 260. The second connecting element 2123 can be inserted into the surface 260s of the main circuit board 260. The second connecting element 2123 is, for example, substantially perpendicular to the surface 260s of the main circuit board 260. In addition, since the first connecting element 2113 is flexible, it can be bent to contact the main circuit board 260. Compared to a bent pin, the first connection element 2113 of this embodiment is a flexible circuit board, so even if the first connection element 2113 is connected to the main circuit board 260 in a curved manner, the attenuation of the electrical signal is still small. In addition, the optical fiber terminal device 200 further includes at least one soldering point 265 for soldering the pad 2113C of the first connection element 2113 to a pad (not shown) of the main circuit board 260.

[0063] Compared to the second connector element 2123 and the flexible third pin 1133, which are insertable into the main circuit board 260 as shown in Figure 8, in another embodiment, the second connector element 2123 may be a flexible circuit board (not shown), and the third pin 1133 can be replaced with a third connector element comprising a flexible circuit board (not shown). The function and electrical characteristics of the third connector element are the same as or similar to those of the third pin 1133. The structure of the flexible circuit boards of the second connector element 2123 and the third connector element is similar to or identical to that of the first connector element 2113. The second and third connector elements can be electrically connected to the main circuit board 260 by soldering, thereby increasing the flexibility of mounting the optical transceiver carrier 210 to the main circuit board 260 and reducing installation costs.

[0064] In summary, embodiments of the present invention propose an optical fiber terminal device and its optical transceiver carrier, the optical transceiver carrier itself including a visible light transmitter. The visible light transmitter is configured to emit visible light, and according to the present invention, the visible light has focusing and low attenuation properties. Therefore, a visible light spot can be found on the surface of the optical fiber only when there is a defect (e.g., a fault) in the optical fiber, and when the optical fiber is intact (e.g., without defects), the visible light emitted from the end face of the optical fiber is clearly visible (or observable). As a result, it is possible to greatly improve the accuracy of optical fiber fault detection, reduce the difficulty of operation, truly solve the problems caused by the prior art, and greatly reduce the human resources and financial costs for wiring detection. In another embodiment, at least one of the connecting elements of the invisible light transmitter and invisible light receiver is, for example, a flexible circuit board. As a result, compared to bent pins, signal attenuation is still low even if the flexible circuit board is bent and connected to the main circuit board.

[0065] While the present invention has been described in terms of illustrative and preferred embodiments, it should be understood that the invention is not limited thereto. Based on embodiments of the technical features of the present invention, those skilled in the art will be able to make various modifications and similar arrangements and procedures without departing from the spirit and scope of protection of the invention. Accordingly, the scope of protection of the present invention should be as defined in the appended claims.

Claims

1. It is an optical transmission and reception carrier, Fiber optic connector and An invisible light transmitter configured to emit a first invisible light toward the optical fiber connector and equipped with a first connecting element, An invisible light receiver, configured to receive a second invisible light from the optical fiber connector and comprising a second connecting element, A visible light transmitter configured to emit visible light toward the optical fiber connector, Equipped with, One of the first and second connecting elements is a flexible printed circuit board, which is an optical transceiver carrier.

2. An optical transceiver carrier according to claim 1, wherein the first invisible light has a peak wavelength between 1265 nanometers and 1275 nanometers, and the second invisible light has a peak wavelength between 1575 nanometers and 1580 nanometers.

3. An optical transceiver carrier according to claim 1, wherein the visible light has a wavelength between 620 nanometers and 750 nanometers.

4. An optical transceiver carrier according to claim 1, wherein the visible light transmitter comprises a third connecting element, and the third connecting element is a flexible printed circuit board.

5. The optical transceiver carrier according to claim 1, further, An optical fiber having a first end and a second end, A wavelength division multiplexer configured to guide the first invisible light and the visible light to the first end, and the second invisible light to the invisible light receiver, An optical transceiver carrier equipped with this.

6. An optical transceiver carrier according to claim 5, wherein the wavelength division multiplexer allows visible light to pass through, and the visible light transmitter, the wavelength division multiplexer, and the first end are arranged in a straight line.

7. The optical transmitting and receiving carrier according to claim 5, wherein the visible light transmitter is Circuit board and A visible light source, electrically connected and arranged on the circuit board, A lens corresponding to the visible light source and configured to guide the visible light emitted by the visible light source and concentrate it into the wavelength division multiplexer, An optical transceiver carrier equipped with this.

8. An optical transceiver carrier according to claim 1, wherein the other of the first connecting element and the second connecting element is a pin extending along a straight line.

9. An optical transceiver carrier according to claim 1, wherein the invisible light transmitter comprises a first circuit board, the invisible light receiver comprises a second circuit board, the visible light transmitter comprises a third circuit board, and the first circuit board, the second circuit board, and the third circuit board are arranged perpendicular to each other.

10. Optical fiber terminal device, Light source driver, Drive current circuit and, Optical transmission and reception carrier, The optical transmitting and receiving carrier is Fiber optic connector and An invisible light transmitter is configured to emit a first invisible light toward the optical fiber connector, and comprises a first connecting element, the first connecting element being electrically connected to the light source driver. An invisible light receiver is configured to receive a second invisible light from the optical fiber connector, and includes a second connecting element, the second connecting element being electrically connected to the light source driver. A visible light transmitter is configured to emit visible light toward the optical fiber connector, and comprises a third connecting element, the third connecting element being electrically connected to the drive current circuit. Equipped with, An optical fiber terminal device in which the third connecting element is a flexible printed circuit board.

11. Optical fiber transmission wiring, An optical fiber having a first end and a second end, An invisible light transmitter, positioned adjacent to the first end and configured to emit a first invisible light, An invisible light receiver is positioned adjacent to the first end and configured to receive a second invisible light, A visible light transmitter, positioned adjacent to the first end and configured to emit visible light, A fiber optic connector connected to the second end, Optical fiber transmission wiring equipped with this.

12. Optical fiber transmission wiring according to claim 11, wherein the visible light has a wavelength between 620 nanometers and 750 nanometers.

13. Optical fiber transmission wiring according to claim 11, wherein the wavelength of the first invisible light, the wavelength of the second invisible light, and the wavelength of the visible light are different.

14. The optical fiber transmission wiring according to claim 11, further, A wavelength division multiplexer configured to guide the first invisible light and the visible light to the first end, and the second invisible light to the invisible light receiver. Optical fiber transmission wiring equipped with this.

15. Optical fiber transmission wiring according to claim 14, wherein the wavelength division multiplexer allows visible light to pass through, and the visible light transmitter, the wavelength division multiplexer, and the first end are arranged in a straight line.

16. The optical fiber transmission wiring according to claim 14, wherein the visible light transmitter is Circuit board and A visible light source, electrically connected and arranged on the circuit board, A lens positioned in correspondence with the visible light source and configured to guide the visible light emitted by the visible light source and concentrate it into the wavelength division multiplexer, Optical fiber transmission wiring equipped with this.

17. Optical fiber terminal device, Optical fiber transmission wiring, An optical fiber having a first end and a second end, An invisible light transmitter, positioned adjacent to the first end and configured to emit a first invisible light, An invisible light receiver is positioned adjacent to the first end and configured to receive a second invisible light, A visible light transmitter, positioned adjacent to the first end and configured to emit visible light, A fiber optic connector connected to the second end, Optical fiber transmission wiring equipped with, A drive current circuit electrically connected to the visible light transmitter, A processor electrically connected to the drive current circuit and configured to control the drive current circuit to drive the visible light transmitter, A fiber optic terminal device equipped with the following features.

18. The optical fiber terminal device according to claim 17, further, Light source driver electrically connected to the invisible light transmitter and the invisible light receiver. Equipped with, The optical fiber terminal device comprises a processor electrically connected to the light source driver and configured to control the light source driver to drive the invisible light transmitter and the invisible light receiver.

19. The optical fiber terminal device according to claim 17, further, A trigger that is electrically connected to the processor and configured to receive input commands. Equipped with, The optical fiber terminal device further comprises a processor configured to control the drive current circuit to cause the visible light transmitter to emit visible light according to the input command.

20. An optical fiber terminal device according to claim 17, wherein the visible light has a wavelength between 620 nanometers and 750 nanometers.

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