Single fiber bidirectional optical transceiver device

Abstract

The utility model relates to optical communication technical field provides including shell, light emission subassembly and light receiving subassembly, light emission subassembly and light receiving subassembly are side by side in the shell, and light emission subassembly and light receiving subassembly are separated by the partition, the partition forms the first optical chamber for light receiving subassembly and the second optical chamber for light emission subassembly in the shell, still be equipped with the light beam device for the light beam transmission of light emission subassembly and for the light beam reflection of light receiving subassembly in the shell. A kind of single-fiber bidirectional optical transceiver of the utility model, light emission subassembly and light receiving subassembly are physically separated by using partition, so this can realize two relatively independent optical chambers, on the one hand can prevent the optical signal crosstalk between light emission subassembly and light receiving subassembly, on the other hand, using the position distinction of first optical chamber and second optical chamber, the positioning assembly of light emission subassembly and light receiving subassembly is facilitated, and interference caused by mutual encroachment of position when assembling does not appear.

Description

Technical Field

[0001] This utility model relates to the field of optical communication technology, specifically a single-fiber bidirectional optical transceiver device. Background Technology

[0002] Most existing single-fiber bidirectional optical transceivers house the optical transmitting and receiving components within a single housing without partitioning. As communication rates increase, crosstalk issues can easily occur between the optical signals of the transmitting and receiving components within the housing, thus affecting the device's performance. Utility Model Content

[0003] The purpose of this invention is to provide a single-fiber bidirectional optical transceiver device, which can at least solve some of the defects in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a single-fiber bidirectional optical transceiver, comprising a housing, an optical emitting component, and an optical receiving component, wherein the optical emitting component and the optical receiving component are arranged side by side in the housing and separated by a partition, wherein the partition forms a first optical cavity for accommodating the optical receiving component and a second optical cavity for accommodating the optical emitting component within the housing, and the housing is further provided with a beam device for beam transmission of the optical emitting component and beam reflection of the optical receiving component.

[0005] Furthermore, the beam device includes a deflection prism, which is horizontally positioned within the housing, with a portion of the deflection prism located in the first optical chamber and a portion located in the second optical chamber.

[0006] Furthermore, a signal terminal is provided outside the housing. The optical signal emitted by the optical emitting component is output from the signal terminal, and the optical signal received by the optical receiving component is input from the signal terminal.

[0007] Furthermore, the signal terminal includes an optical adapter and a modulation ring. The optical signal emitted by the optical emitting component passes through the modulation ring and the optical adapter in sequence, and the optical signal received by the optical receiving component passes through the optical adapter and the modulation ring in sequence.

[0008] Furthermore, the light emitting component includes a laser chip unit, a collimating lens unit, and a light emitting zblock. Multiple light beams emitted by the laser chip unit are collimated by the collimating lens unit and then directed to the light emitting zblock. The light emitting zblock outputs a single light beam that is transmitted through the light beam device. The light signal transmitted through the light beam device is collimated by the collimating lens unit and then output.

[0009] Furthermore, the optical emitting component also includes an optical isolator, which is disposed in the optical path between the beam device and the zblock.

[0010] Furthermore, the light emitting assembly also includes an emitting pad and a COC substrate, the collimating lens unit is disposed on the emitting pad, and the laser chip unit is disposed on the COC substrate.

[0011] Furthermore, the optical receiving component includes an optical receiving zblock, a converging lens array, a photodetector chip unit, and a transimpedance amplifier. The input light passes sequentially through the optical receiving zblock, the converging lens array, and the photodetector chip unit, and the photodetector chip unit is electrically connected to the transimpedance amplifier.

[0012] Furthermore, the light receiving component also includes a receiving pad, and the converging lens array is disposed on the receiving pad.

[0013] Furthermore, it also includes a flexible circuit board disposed on the housing, and both the light emitting component and the light receiving component are electrically connected to the flexible circuit board.

[0014] Compared with the prior art, the beneficial effects of this utility model are: a single-fiber bidirectional optical transceiver device, by using a partition to physically separate the optical emitting component and the optical receiving component, can realize two relatively independent optical chambers. On the one hand, it can prevent crosstalk of optical signals between the optical emitting component and the optical receiving component. On the other hand, by using the positions of the first optical chamber and the second optical chamber to distinguish them, it is also convenient to position and assemble the optical emitting component and the optical receiving component, and there will be no interference caused by mutual encroachment on each other's positions during assembly. Attached Figure Description

[0015] Figure 1 A frontal view structural diagram of a single-fiber bidirectional optical transceiver device provided for an embodiment of this utility model;

[0016] Figure 2 A side view structural diagram of a single-fiber bidirectional optical transceiver device provided for an embodiment of this utility model;

[0017] Figure 3 A top-view structural diagram of a single-fiber bidirectional optical transceiver device provided for an embodiment of this utility model;

[0018] Figure 4 for Figure 1 A schematic diagram of the horizontal cross-section;

[0019] In the attached diagram, the following labels are used: 1-Optical adapter; 2-Adjustment ring; 3-Housing; 4-Converging lens; 5-Deflecting prism; 6-Optical isolator; 7-Light emitting z-block; 8-Emitting pad; 9-Collimating lens; 10-Laser chip unit; 11-COC substrate; 12-Flexible circuit board; 13-Transimpedance amplifier; 14-Receiver pad; 15-Photodetector chip unit; 16-Converging lens array; 17-Light receiving z-block; 18-Separator. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0021] Please see Figures 1 to 4 This utility model provides a single-fiber bidirectional optical transceiver, including a housing 3, an optical emitting component, and an optical receiving component. The optical emitting component and the optical receiving component are arranged side by side in the housing 3 and separated by a partition 18. The partition 18 forms a first optical cavity for housing the optical receiving component and a second optical cavity for housing the optical emitting component within the housing 3. The housing 3 also includes beam transmission devices for the optical emitting component and beam reflection devices for the optical receiving component. In this embodiment, by physically separating the optical emitting component and the optical receiving component using the partition 18, two relatively independent optical cavities can be achieved. This prevents crosstalk between the optical emitting component and the optical receiving component, and the positions of the first and second optical cavities facilitate the positioning and assembly of the optical emitting component and the optical receiving component, preventing interference caused by mutual encroachment during assembly. Specifically, the interior space of housing 3 is divided into two spaces by a vertically arranged partition 18. These two spaces are not completely separated. The deflecting prism 5 needs to deflect the optical path to the optical receiving component within housing 3. However, since most of the optical paths in the optical receiving component and the optical transmitting component are separated by the partition 18, the optical signal crosstalk problem can be greatly reduced. In addition, a single beam device can be used to realize the integration of single-beam bidirectional optical spot transceiver, saving device costs.

[0022] Please see Figures 1 to 4 The beam device includes a deflecting prism 5, which is horizontally positioned within the housing 3, with a portion of the deflecting prism 5 located in the first optical chamber and a portion located in the second optical chamber. In this embodiment, as... Figure 4As shown, the beam device used can be a deflecting prism 5, which is elongated and spans the space above and below the partition 18. The space above the partition 18 is the first optical cavity, and the space below the partition 18 is the second optical cavity. Because of the design of the deflecting prism 5, these two cavities are not completely separated but connected at the deflecting prism 5. Preferably, in addition to using the deflecting prism 5, the beam device can also be implemented using devices such as a polarization beam splitter.

[0023] Please see Figures 1 to 4 The housing 3 has a signal terminal externally. The optical signal emitted by the optical emitting component is output from the signal terminal, and the optical signal received by the optical receiving component is input from the signal terminal. Preferably, the signal terminal includes an optical adapter 1 and an adjustment ring 2. The optical signal emitted by the optical emitting component passes sequentially through the adjustment ring 2 and the optical adapter 1, and the optical signal received by the optical receiving component passes sequentially through the optical adapter 1 and the adjustment ring 2. In this embodiment, there is only one signal terminal externally located on the housing 3, through which both input and output light pass, resulting in a more compact structure. The optical adapter 1 enables fiber optic connection, and the adjustment ring 2 optimizes the emission and transmission of optical signals; both are existing devices.

[0024] Please see Figures 1 to 4 The light emitting assembly includes a laser chip unit 10, a collimating lens unit 9, and a light emitting zblock 7. Multiple light beams emitted from the laser chip unit 10 are collimated by the collimating lens unit 9 and then directed to the light emitting zblock 7. The light emitting zblock 7 outputs a single light beam that transmits through the beam device. The light signal transmitted through the beam device is then collimated by the collimating lens unit 9 and output. Preferably, the light emitting assembly further includes an optical isolator 6, which is disposed in the optical path between the beam device and the zblock. The light emitting assembly also includes an emitting pad 8 and a COC substrate 11. The collimating lens unit 9 is disposed on the emitting pad 8, and the laser chip unit 10 is disposed on the COC substrate 11. In this embodiment, the specific structure of the aforementioned light-emitting component is refined. The laser chip unit 10 can be designed with four laser chips arranged side-by-side, emitting four beams of light. The collimating lens unit 9 collimates the optical signal to achieve a parallel optical path. The light-emitting zblock 7 combines the four beams into one beam for output. The optical isolator 6 prevents light return. The generating pad and COC substrate 11 are used to support the corresponding devices; both the pad and the substrate can be made of ceramic material. The light-emitting zblock 7 is an optical glass filter assembly that enables transmission and reflection of different wavelengths, has a fixed wavelength passband and stopband, and achieves optical wavelength division multiplexing functionality.

[0025] Please see Figures 1 to 4 The optical receiving component includes an optical receiving zblock 17, a converging lens array 16, a photodetector chip unit 15, and a transimpedance amplifier 13. Input light passes sequentially through the optical receiving zblock 17, the converging lens array 16, and the photodetector chip unit 15. The photodetector chip unit 15 is electrically connected to the transimpedance amplifier 13. Preferably, the optical receiving component further includes a receiving pad 14, on which the converging lens array 16 is disposed. In this embodiment, the input light, after passing through the optical receiving zblock 17, can be split into four paths, which are then converged by the converging lens array 16 and input to the photodetector chip unit 15. The photodetector chip unit 15 and the transimpedance amplifier 13 complete the photoelectric conversion. The number of converging lenses 4 in the converging lens array 16 is determined according to the number of optical paths, and their function is to achieve parallel optical paths. The receiving pad 14 is used to hold the device. The optical receiving zblock 17 is an optical glass filter assembly that can achieve transmission and reflection of different wavelengths, has a fixed wavelength passband and stopband, and realizes optical wavelength division multiplexing functionality.

[0026] Please see Figures 1 to 4 The device also includes a flexible circuit board 12 disposed on the housing 3, and both the light emitting component and the light receiving component are electrically connected to the flexible circuit board 12. In this embodiment, the circuit on the flexible circuit board 12 is used to drive the light emitting component and receive electrical signals transmitted from the light receiving component. Preferably, the flexible circuit board 12 is inserted into the housing 3 from the right side gap and fixed by silver paste. The emitting pad 8 and the housing 3 are fixed by silver paste; the four laser chips and the four COC substrates 11 are fixed by silver paste; the four COC substrates 11 and the emitting pad 8 are fixed by silver paste; the four collimating lenses 9 correspond one-to-one with the four laser chips and their axes coincide, and the four collimating lenses 9 are fixed by an automated optical path coupling and coating equipment.

[0027] Please see Figures 1 to 4Four laser chips 10, under the control of the driving current, respectively excite four laser signals of different wavelengths, which enter the optical transmitting zblock 7. The four wavelengths of laser light are reflected in the optical transmitting zblock 7 and output through the common port, respectively transmitting through the optical isolator 6, the deflection prism 5 (transmission), the converging lens 4, the adjustment ring 2, and the optical adapter 1, thus completing the output of the service transmitted optical signal, which enters the service optical fiber. The received optical signal enters the optical adapter 1 from the service optical fiber; after passing through the adjustment ring 2, the converging lens 4, and the deflection prism 5 (reflection), it enters the optical receiving zblock 17. The four wavelengths of laser light are reflected and transmitted in the optical receiving zblock 17, respectively entering the converging lens array 16 and the four photodetector chips 14 through four transmission paths. The optical signal is converted by photoelectric conversion by the photodetector chip 14 to form a current signal input to the transimpedance amplifier 13 and the flexible circuit board 12, thus completing the conversion of the service received optical signal into an electrical signal, which enters the optical module component board.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-fiber bidirectional optical transceiver, comprising a housing, an optical emitting component, and an optical receiving component, characterized in that: The light emitting component and the light receiving component are arranged side by side in the housing, and the light emitting component and the light receiving component are separated by a partition. The partition forms a first optical cavity for accommodating the light receiving component and a second optical cavity for accommodating the light emitting component in the housing. The housing is also provided with a beam device for light beam transmission of the light emitting component and light beam reflection of the light receiving component.

2. The single-fiber bidirectional optical transceiver device as described in claim 1, characterized in that: The beam device includes a deflecting prism, which is horizontally positioned within the housing, with a portion of the deflecting prism located in the first optical chamber and a portion located in the second optical chamber.

3. The single-fiber bidirectional optical transceiver device as described in claim 1, characterized in that: The housing is provided with a signal terminal. The optical signal emitted by the optical emitting component is output from the signal terminal, and the optical signal received by the optical receiving component is input from the signal terminal.

4. The single-fiber bidirectional optical transceiver device as described in claim 3, characterized in that: The signal terminal includes an optical adapter and a modulation ring. The optical signal emitted by the optical emitting component passes through the modulation ring and the optical adapter in sequence, and the optical signal received by the optical receiving component passes through the optical adapter and the modulation ring in sequence.

5. The single-fiber bidirectional optical transceiver device as described in claim 1, characterized in that: The light emitting component includes a laser chip unit, a collimating lens unit, and a light emitting zblock. Multiple light beams emitted by the laser chip unit are collimated by the collimating lens unit and then directed to the light emitting zblock. The light emitting zblock outputs a single light beam that is transmitted through the light beam device. The light signal transmitted through the light beam device is collimated by the collimating lens unit and then output.

6. The single-fiber bidirectional optical transceiver device as described in claim 5, characterized in that: The optical emitting component also includes an optical isolator, which is disposed in the optical path between the beam device and the zblock.

7. The single-fiber bidirectional optical transceiver device as described in claim 6, characterized in that: The light emitting assembly also includes an emitting pad and a COC substrate, the collimating lens unit is disposed on the emitting pad, and the laser chip unit is disposed on the COC substrate.

8. The single-fiber bidirectional optical transceiver device as described in claim 1, characterized in that: The optical receiving component includes an optical receiving zblock, a converging lens array, a photodetector chip unit, and a transimpedance amplifier. The input light passes sequentially through the optical receiving zblock, the converging lens array, and the photodetector chip unit, and the photodetector chip unit is electrically connected to the transimpedance amplifier.

9. A single-fiber bidirectional optical transceiver as described in claim 8, characterized in that: The optical receiving component also includes a receiving pad, and the converging lens array is disposed on the receiving pad.

10. A single-fiber bidirectional optical transceiver as described in claim 1, characterized in that: It also includes a flexible circuit board disposed on the housing, and both the light emitting component and the light receiving component are electrically connected to the flexible circuit board.

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