TWM599511U - Optical duplexer - Google Patents

Abstract

An optical duplexer is provided. The optical duplexer includes an optical circulator, a first optical fiber connector, a second optical fiber connector, a third optical fiber connector, a metal sleeve, a first fixing element, and a second fixing element. The optical circulator includes a first port, a second port, and a third port. The first port receives a first optical signal. The second port transmits the first optical signal and receives a second optical signal. The third port transmits the second optical signal. The metal sleeve covers the optical circulator, wherein the metal sleeve includes a first end and a second end opposite to the first end. The first fixing element is disposed at the first end, wherein the first fixing element fixes the first end, the first optical fiber connector, and the third optical fiber connector. The second fixing element is disposed at the second end, wherein the second fixing element fixes the second end and the second optical fiber connector.

Description

Optical duplexer

The present disclosure relates to a device suitable for installing optical fibers or cables and particularly relates to an optical duplexer.

With the evolution of general communication technology, optical fiber networks have been regarded as the necessary infrastructure for modern cities. Among them, wavelength division multiplexing (WDM) is often used in the mainstream communication technology of optical communication systems. one of them. When deploying an optical fiber network, a wavelength division multiplexer (wavelength division multiplexer) is required to achieve the purpose of using multiple lasers to send multiple lasers of different wavelengths on a single fiber at the same time. However, the number of ports of the wavelength division multiplexer is fixed. When the number of optical transceivers required to communicate in the optical fiber network is increased beyond the number that the wavelength division multiplexer can support, the telecom operators may need to spend additional costs and time to re-deploy the optical fiber network. In addition, the deployment of optical fiber networks may also interrupt the communication of optical fiber networks and cause inconvenience to users.

The present disclosure provides an optical duplexer (optical duplexer), which can convert optical signals of any wavelength transmitted through duplex fiber pairs into single-core fiber pairs.

The disclosed optical duplexer (optical duplexer) is suitable for converting dual-fiber bidirectional transmission into single-fiber bidirectional wavelength or wavelength group pair transmission. The optical duplexer includes an optical circulator, a first optical fiber connector, and a second The second optical fiber connector, the third optical fiber connector, the metal sleeve, the first fixing part and the second fixing part. The optical circulator includes a first port, a second port, and a third port. The first port receives the first optical signal. The second port transmits the first optical signal and receives the second optical signal. The third port transmits the second optical signal. The first optical fiber connector is coupled to the first port. The second optical fiber connector is coupled to the second port. The third optical fiber connector is coupled to the third port. The metal sleeve covers the optical circulator, wherein the metal sleeve includes a first end and a second end opposite to the first end. The first fixing member is arranged at the first end of the metal sleeve, wherein the first fixing member fixes the first end, the first optical fiber connector, and the third optical fiber connector. The second fixing member is arranged at the second end of the metal sleeve, wherein the second fixing member fixes the second end and the second optical fiber connector.

In an embodiment of the present disclosure, the above-mentioned first optical signal has a first wavelength and the second optical signal has a second wavelength, wherein the first wavelength and the second wavelength are the same.

In an embodiment of the present disclosure, the above-mentioned first optical fiber connector, second optical fiber connector, and third optical fiber connector are respectively configured with ceramic ferrules.

In an embodiment of the present disclosure, the above-mentioned first optical fiber connector, second optical fiber connector and third optical fiber connector are respectively one of a standard connector and a Lucent connector.

In an embodiment of the present disclosure, the aforementioned first optical fiber connector and the third optical fiber connector are arranged parallel to each other on one side of the optical circulator.

Based on the above, the present disclosure can expand the users of the optical fiber network without changing the existing optical fiber network architecture.

The present disclosure provides an optical bidirectional device. The optical duplexer is a passive component that can be connected to an optical fiber cable. The installation of an optical duplexer can make two optical signals that are transmitted in one direction on different optical fiber cables to be transmitted in two directions on a single optical fiber cable. In this way, an optical fiber network that originally only supported one user can be immediately upgraded to support two users.

FIG. 1 shows a schematic diagram of an optical bidirectional device 100 according to an embodiment of the disclosure. The optical duplexer 100 may include an optical circulator 110. The optical circulator 110 may have three ports, namely a first port P1, a second port P2, and a third port P3. The optical circulator 110 may have a first port P1 unidirectional input optical signal, a second port P2 bidirectional input/output optical signal, and a third port P3 unidirectional output optical signal.

The first port P1 can be used to receive (or input) the first optical signal TS. For example, the first port P1 may be coupled to the transmitting end of a terminal device of a user, and receive the first optical signal TS from the terminal device of the user from the transmitting end. The second port P2 can be used to transmit the first optical signal TS and receive the second optical signal RS. For example, the second port P2 can be coupled to a transceiver or a wavelength division multiplexer. The second port P2 can transmit the first optical signal TS to the transceiver or the wavelength division multiplexer through an optical fiber cable, and receive from the transceiver or the wavelength division multiplexer through the same optical fiber cable The second optical signal RS. The third port P3 can be used to transmit (or output) the second optical signal RS. For example, the third port P3 may be coupled to the receiving end of a terminal device of a user, and transmit the second optical signal RS to the receiving end of the terminal device of the user. The first optical signal TS and the second optical signal RS may have the same or different wavelengths.

In an embodiment, the optical duplexer 100 may further include a first optical fiber connector C1, a second optical fiber connector C2, and a third optical fiber connector C3. The first optical fiber connector C1 is coupled to the first port P1. The second optical fiber connector is coupled to the second port P2. The third optical fiber connector is coupled to the third port P3. The first optical fiber connector C1, the second optical fiber connector C2, and the third optical fiber connector C3 may be respectively configured with ceramic ferrules. The optical duplexer 100 can be coupled to the optical fiber through the first optical fiber connector C1, the second optical fiber connector C2, or the third optical fiber connector C3.

In an embodiment, the first optical fiber connector C1 and the third optical fiber connector C3 are arranged parallel to each other on one side of the optical circulator 110, as shown in FIG. 1, but the disclosure is not limited thereto.

In an embodiment, the first optical fiber connector C1, the second optical fiber connector C2, and the third optical fiber connector C3 may be common types of optical fiber connectors, such as standard connectors (SC) and Lucent/local connectors, LC), enterprise systems connection (ESCON), ferrule connector (FC), fiber distributed data interface (FDDI), mechanical transfer connector (MT) or straight end ( Straight tip, ST) connectors and other types of optical fiber connectors, this disclosure is not limited to this.

In an embodiment, the optical duplexer 100 further includes a metal sleeve 120, a first fixing member 131 and a second fixing member 132. The metal sleeve 120 may have a first end 121 and a second end 122 corresponding to the first end 121. The metal sleeve 120 may cover the optical circulator 110. The optical circulator 110 may be encapsulated by a metal sleeve 120. The first fixing member 131 may be disposed at the first end 121 of the metal sleeve 120 and may fix the first end 121, the first optical fiber connector C1, and the third optical fiber connector C3. The second fixing member 132 can be disposed at the second end 122 of the metal sleeve 120 and can fix the second end 122 and the second optical fiber connector C2. The first fixing member 131 and the second fixing member 132 can protect the first optical fiber connector C1, the second optical fiber connector C2, or the third optical fiber connector C3 of the optical circulator 110 from being pulled and damaged by external forces. The cylindrical metal sleeve 120 can guide the force to the outer coated optical fiber connected to the first optical fiber connector C1, the second optical fiber connector C2 or the third optical fiber connector C3 through the first fixing member 131 or the second fixing member 132, In this way, the force on the single end of the optical circulator 110 is reduced, so as to enhance the overall tensile strength of the optical duplexer 100. The appearance of the optical duplexer 100 can be designed as a jumper type for easy use.

FIG. 2 shows a schematic diagram of the optical bidirectional device 100 interfacing with an active component according to an embodiment of the present disclosure. The active component is, for example, the transceiver SBO, but the present disclosure is not limited thereto. The transceiver SB0 may include a transmitting end TX and a receiving end RX. The first port P1 of the optical duplexer 100 can be coupled to the transmitting terminal TX of the transceiver SB0, and receive the optical signal S1 from the transmitting terminal TX. The second port P2 of the optical duplexer 100 can transmit the optical signal S1 to an external device through a single-core optical fiber cable, and receive the optical signal S2 from the external device through the same optical fiber cable. The third port P3 can be coupled to the receiving end RX of the transceiver SB0 and transmit the optical signal S2 to the receiving end RX. In this embodiment, the optical signal S1 and the optical signal S2 may have the same or different wavelengths. Compared with the traditional bidirectional transceiver (BiDi-Transceiver) for bidirectional transmission through a single-core fiber, the transceiver SB0 can achieve bidirectional transmission through a single-core fiber through the optical bidirectional device 100, and the difference in single-core fiber The optical signals in the directions can have the same wavelength.

FIG. 3 illustrates a schematic diagram of the optical duplexer 100 interfacing with a passive component according to an embodiment of the disclosure, where the passive component is, for example, a wavelength division multiplexer 200. The wavelength division multiplexer 200 can include a fourth port M4, a fifth port M5, and a sixth port M6. The fourth port M4 can be used to receive the optical signal S3 or transmit the optical signal S4, and the fifth port M5 can be used to transmit the optical signal S3 And the sixth port M6 can be used to receive the optical signal S4. The first port P1 of the optical duplexer 100 can be coupled to the fifth port M5 of the wavelength division multiplexer 200 and receives the optical signal S3 from the fifth port M5. The second port P2 of the optical duplexer 100 can transmit the optical signal S3 to an external device through a single-core optical fiber cable, and receive the optical signal S4 from the external device through the same optical fiber cable. The third port P3 of the optical duplexer 100 can be coupled to the sixth port M6 of the wavelength division multiplexer 200, and transmits the optical signal S4 to the sixth port M6. In this embodiment, the optical signal S3 and the optical signal S4 may have the same or different wavelengths.

FIG. 4 illustrates a schematic diagram of a transceiver interfaced with a wavelength division multiplexer 300 according to an embodiment of the disclosure. The wavelength division multiplexer 300 may have a seventh port M7 that can be used as an input/output port, an eighth port M8 that can be used as an input port, and a ninth port M9 that can be used as an output port, but the disclosure is not limited thereto. For example, if the wavelength division multiplexer 300 is a four-to-one wavelength division multiplexer, the wavelength division multiplexer 300 may also have a tenth port M10 that can be used as an input port and an eleventh port that can be used as an output port. M11, as shown in Figure 4.

The wavelength division multiplexer 300 can be coupled to the receiver transmitter SB1 and/or the transceiver SB2. Taking the transceiver SB2 as an example, the eighth port M8 can be coupled to the transmitting terminal TX2 of the transceiver SB2 and receiving the optical signal S5 from the transmitting terminal TX2. The seventh port M7 can transmit the optical signal S5 to the external device through the optical fiber cable, and receive the optical signal S6 from the external device through the same optical fiber cable. The ninth port M9 can be coupled to the receiving end RX2 of the transceiver SB2, and transmit the optical signal S2 to the receiving end RX2.

Assuming that a person wants to increase the number of transceivers supported by the wavelength division multiplexer 300, the person can install the disclosed optical duplexer 100 between the wavelength division multiplexer 300 and the transceivers. In this way, the transmitting end and the receiving end of a single transceiver can use the same port of the wavelength division multiplexer 300, as shown in FIG. 5.

FIG. 5 shows a schematic diagram of the transceiver SB2 being connected to the wavelength division multiplexer 300 through the optical duplexer 100 according to an embodiment of the disclosure. The transmitting terminal TX2 of the transceiver SB2 can be coupled to the first port P1 of the optical duplexer 100, and can transmit the optical signal S5 representing the upstream signal of the transceiver SB2 to the first port P1. The receiving end RX2 of the transceiver SB2 can be coupled to the third port P3 of the optical duplexer 100, and can receive the optical signal S6 representing the downstream signal of the transceiver SB2 from the third port P3. The second port P2 of the optical duplexer 100 can be coupled to the ninth port M9 of the wavelength division multiplexer 300. The second port P2 of the optical duplexer 100 can transmit the optical signal S5 and the optical signal S6 to the ninth port M9 through a single optical fiber cable.

It can be seen from FIG. 5 that the transmitting end TX2 and the receiving end RX2 of the transceiver SB2 can be coupled to the same port of the wavelength division multiplexer 300 (ie, the ninth port M9) through the optical duplexer 100 of the present disclosure. In other words, after the optical duplexer 100 is installed, the transceiver SB2 that originally occupied the two ports of the wavelength division multiplexer 300 (as shown in FIG. 4) becomes only one of the wavelength division multiplexer 300. Port, and the wavelength of the optical signal S5 and the wavelength of the optical signal S6 can be the same.

Based on this, the personnel can apply another port of the wavelength division multiplexer 300 to the newly added transceiver SB3. The transceiver SB3 can be coupled to the eighth port M8 of the wavelength division multiplexer 300 through the optical bidirectional device 400. The structure and function of the optical duplexer 400 can be the same as that of the optical duplexer 100, and the twelfth port P12, the thirteenth port P13, and the fourteenth port P14 of the optical duplexer 400 correspond to the first port of the optical duplexer 100, respectively P1, the second port P2, and the third port P3.

The transmitting terminal TX3 of the transceiver SB3 can be coupled to the twelfth port P12 of the optical duplexer 400, and transmits the optical signal S7 representing the upstream signal of the transceiver SB3 to the twelfth port P12. The receiving end RX3 of the transceiver SB3 can be coupled to the fourteenth port P14 of the optical duplexer 400, and receives the optical signal S8 representing the downstream signal of the transceiver SB3 from the fourteenth port P14. The thirteenth port P13 of the optical duplexer 400 can be coupled to the eighth port M8 of the wavelength division multiplexer 300. The thirteenth port P13 of the optical duplexer 400 can transmit the optical signal S7 and the optical signal S8 to the eighth port M9 through a single optical fiber cable.

FIG. 6 illustrates a schematic diagram of the optical duplexer 100 applied to an outdoor scene according to an embodiment of the disclosure. The optical bidirectional device 100 can be combined with optical fibers and optical connectors to form an optical bidirectional module 6 having a jumper-shaped appearance. Specifically, the optical duplexer 100 can be connected to the dual-port optical connector 600 and the single-port optical connector 700 through an optical fiber 60 and an optical fiber 70 having an anti-ultraviolet (UV) coating, respectively, to form an optical fiber with a jumper appearance. Two-way module 6.

The dual port optical connector 600 and the single port optical connector 700 can be protected by adding an interface protective cover. FIG. 7 illustrates a schematic diagram of the optical duplexer 100 applied to an outdoor scene according to another embodiment of the disclosure. The dual-port optical connector 600 can be coupled to the transmitting end TX4 and the receiving end RX4 of the transceiver SB4. The interface protective cover 650 can cover the dual-port optical connector 600 and the transceiver SB4 that are connected to each other to protect the dual-port optical connector 600 and the transceiver SB4. On the other hand, the interface protective cover (or optical fiber connection box, outdoor waterproof and dustproof box) 750 can cover the single port optical connector 700 to protect the single port optical connector 700.

In summary, the optical bidirectional device 100 of the present disclosure may have the following features and functions: 1. No need to change any existing optical network deployment changes. 2. The optical bidirectional device 100 is a passive component and does not require any external power supply. 3. The transceiver only needs to install the optical duplexer 100 to convert dual-fiber bidirectional transmission into single-fiber bidirectional transmission. The introduction of the optical duplexer 100 does not affect the operation of the existing transceiver. 4. The number of required switching transceivers can be increased or decreased locally and instantly, without collective amplification, to avoid interruption of traffic. 5. There is no limitation on the wavelength used for bidirectional transmission, and the same wavelength can be used for bidirectional transmission, simplifying the sequence of wavelength use, and solving the problem of complicated WDM wavelength planning and difficult management. 6. It can convert any dual-fiber bidirectional wavelength or wavelength group transmission optical network into a single fiber bidirectional wavelength or wavelength group pair transmission optical network. 7. There is no need to install any WDM coupler, and the original optical fiber network can be increased by up to 2 times the number of uses of the same wavelength of WDM. Compared with traditional WDM transmission, it can reduce the WDM coupler and fiber consumption by half. 8. Solve the problem of the limited number of WDM wavelength channels. It can increase the number of wavelengths to twice the number of wavelengths without adding additional fibers. 9. Effectively reduce deployment costs and engineering time. 10. There is no speed or wavelength limitation, but can be reused. 11. Can interface with active components and passive components. 12. With a jumper-type appearance design, it is easy to use.

The optical duplexer of the present disclosure can be installed on an existing optical fiber cable, so that two optical signals that are transmitted in one direction on different optical fiber cables can be transmitted in two directions on a single optical fiber cable. In this way, the optical signal transmitting port and the optical signal receiving port of active components such as optical transceivers or passive components such as wavelength division multiplexers can be switched to the single-core fiber through the optical duplexer, and the same or different wavelengths can be carried out through the single-core fiber. The transmission of the light signal. Therefore, the present disclosure can expand the users of the optical fiber network without changing the existing optical fiber network architecture.

Although this disclosure has been disclosed in the above embodiments, it is not intended to limit the disclosure. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of this disclosure. Therefore, The scope of protection of this disclosure shall be subject to those defined by the attached patent scope.

100: Optical duplexer 110: Optical Circulator 120: Metal sleeve 121: first end 122: second end 131: The first fixing 132: second fixing 200, 300: Wavelength Demultiplexer 6: Optical bidirectional module 60, 70: optical fiber 600: Dual port optical connector 650, 750: Interface protective cover 700: Single port optical connector C1: First fiber connector C2: Second fiber connector C3: Third fiber connector P1: First port P2: second port P3: third port P12: Port 12 P13: Port 13 P14: Port Fourteen M4: fourth port M5: Port 5 M6: The sixth port M7: The seventh port M8: Port 8 M9: Port 9 M10: Tenth port M11: Port Eleven RS: second optical signal RX, RX2, RX3, RX4: receiving end S1, S2, S3, S4, S5, S6, S7, S8: optical signal SB0, SB1, SB2, SB3, SB4: Transceiver TS: The first optical signal TX, TX2, TX3, TX4: transmitter

FIG. 1 shows a schematic diagram of an optical bidirectional device according to an embodiment of the disclosure. FIG. 2 illustrates a schematic diagram of an optical duplexer interfacing an active device according to an embodiment of the disclosure. FIG. 3 illustrates a schematic diagram of an optical duplexer interfacing a passive component according to an embodiment of the disclosure. FIG. 4 shows a schematic diagram of a transceiver interfaced with a wavelength division multiplexer according to an embodiment of the disclosure. FIG. 5 shows a schematic diagram of a transceiver connected to a wavelength division multiplexer through an optical duplexer according to an embodiment of the disclosure. FIG. 6 illustrates a schematic diagram of an optical duplexer applied in an outdoor scene according to an embodiment of the disclosure. FIG. 7 illustrates a schematic diagram of an optical duplexer applied in an outdoor scene according to another embodiment of the disclosure.

100: Optical duplexer

110: Optical Circulator

120: Metal sleeve

121: first end

122: second end

131: The first fixing

132: second fixing

C1: First fiber connector

C2: Second fiber connector

C3: Third fiber connector

P1: First port

P2: second port

P3: third port

RS: second optical signal

TS: The first optical signal

Claims (5)

An optical duplexer, suitable for converting dual-fiber bidirectional transmission into single-fiber bidirectional wavelength or wavelength group pair transmission, wherein the optical duplexer includes: Optical circulators, including: The first port receives the first optical signal; The second port transmits the first optical signal and receives the second optical signal; and The third port transmits the second optical signal; A first optical fiber connector, coupled to the first port; A second optical fiber connector, coupled to the second port; A third optical fiber connector, coupled to the third port; A metal sleeve covering the optical circulator, wherein the metal sleeve includes a first end and a second end opposite to the first end; A first fixing member disposed at the first end of the metal sleeve, wherein the first fixing member fixes the first end, the first optical fiber connector, and the third optical fiber connector; and The second fixing member is arranged at the second end of the metal sleeve, wherein the second fixing member fixes the second end and the second optical fiber connector. The optical bidirectional device according to claim 1, wherein the first optical signal has a first wavelength and the second optical signal has a second wavelength, wherein the first wavelength and the second wavelength are the same. The optical bidirectional device according to claim 1, wherein the first optical fiber connector, the second optical fiber connector, and the third optical fiber connector are respectively configured with ceramic ferrules. The optical duplexer according to claim 1, wherein the first optical fiber connector, the second optical fiber connector, and the third optical fiber connector are respectively one of a standard connector and a Lucent connector. The optical duplexer according to claim 1, wherein the first optical fiber connector and the third optical fiber connector are arranged parallel to each other on one side of the optical circulator.

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