Wave splitting and combining module and optical device

Abstract

The utility model belongs to the field of optical devices, and particularly relates to a wave splitting and combining module and an optical device. Comprising a wavelength division multiplexing assembly, the wavelength division multiplexing assembly comprises a light-transmitting prism and filtering parts, the filtering parts are arranged on the two sides of the light-transmitting prism, and the wavelength division multiplexing assembly further comprises filtering pieces; the wavelength division multiplexing assembly is provided with three signal output positions, and at least one signal output position is provided with a filter. The utility model provides a wave splitting and combining module and an optical device, and aims to solve the problem that the size of a wave splitting and combining module in the prior art is large.

Description

Technical Field

[0001] The utility model belongs to the field of optical devices, and particularly relates to a wavelength division multiplexing module and an optical device. Background Technique

[0002] An optical device refers to an optoelectronic device that is used in cooperation with an optical fiber and can perform operations such as modulating, amplifying, and transmitting optical signals. A three-transmitter and three-receiver optical device is a type of optical device, which mainly includes three signal transmitting ends and three signal receiving ends. The three signal transmitting ends and the three signal receiving ends cooperate with each other to achieve three-transmitter and three-receiver of optical signals.

[0003] Three-transmitter and three-receiver are often used in the process of 50G PON upgrade. At the same time, due to the requirements of 50G PON Combo equipment manufacturers for high-density equipment systems, 1 50G board needs to maintain 16 optical modules. Therefore, the smaller the width of the optical device, the more beneficial it is for installation and use. In particular, the trend of equipment manufacturers in the industry is gradually consistent, making 50G Combo into an optical module in the form of SPF-DD, which further requires the width of the optical device to be less than 11 mm.

[0004] However, in conventional three-transmitter and three-receiver optical devices, due to the processing of three optical signals, the size of the wavelength division multiplexing module in the optical device is relatively large, especially the width of the wavelength division multiplexing module is relatively wide, which in turn leads to a relatively large size of the entire optical device and is difficult to meet the usage requirements.

[0005] In summary, there is a need for a wavelength division multiplexing module with a smaller width in the prior art, so as to reduce the size of the optical device. Summary of the Utility Model

[0006] The utility model provides a wavelength division multiplexing module and an optical device, aiming to solve the problem of the relatively large size of the wavelength division multiplexing module in the prior art.

[0007] To achieve the above purpose, the utility model provides a wavelength division multiplexing module, which includes a wavelength division multiplexing component. The wavelength division multiplexing component includes a light-transmitting prism and a filtering component. The filtering component is arranged on both sides of the light-transmitting prism, and also includes discrete filter plates.

[0008] The wavelength division multiplexing component is provided with three signal output positions, and discrete filter plates are arranged at at least one signal output position.

[0009] In the wavelength division multiplexing module in the prior art, a major factor affecting the size of the wavelength division multiplexing module is that at the corresponding signal receiving end, a filter needs to be installed in the width direction of the device, and the filter is used to filter the optical signal entering the signal receiving end. In this solution, the filter is directly arranged at the signal output position of the wavelength division multiplexing component in the length direction of the device, reducing the size of the entire wavelength division multiplexing module in the width direction. Then, since the installation position of the filter is changed, the position where the filter was set in the prior art is vacated. As a result, when the signal receiving end is installed, the front end of the signal receiving end can be closer to the interior of the optical device, achieving a reduction in the size of the entire optical device.

[0010] Preferably, in order for the wavelength division multiplexing component to output three optical signals to meet the emission requirements of the three optical signals during the 50G PON upgrade process. The wavelength division multiplexing component described in this solution includes a first signal output position, a second signal output position, and a third signal output position.

[0011] In this solution, through the first signal output position, the second signal output position, and the third signal output position, the output requirements of the three optical signals are met, and thus the wavelength division multiplexing component can be applied to the 50G PON upgrade process.

[0012] Preferably, in order to filter the optical signal output from the first signal output position, the filter described in this solution includes a first discrete filter, and the first discrete filter is arranged at the first signal output position.

[0013] In order to filter the optical signal output from the first signal output position, the filter described in this solution includes a second discrete filter, and the second discrete filter is arranged at the second signal output position.

[0014] Preferably, after the optical signal exits from the first discrete filter, in order to guide the optical signal into the first signal receiving end. This solution further includes a first reflector, and the first reflector is arranged corresponding to the first discrete filter.

[0015] After the optical signal exits from the second discrete filter, in order to guide the optical signal into the second signal receiving end. This solution further includes a second reflector, and the second reflector is arranged corresponding to the second discrete filter.

[0016] Preferably, after the optical signal exits from the third signal output position, in order to guide the optical signal into the third signal receiving end. This solution further includes a total reflector, and the total reflector is arranged at the third signal output position.

[0017] Preferably, in order to facilitate the installation of the wavelength division multiplexing component and the filter, this solution further includes a substrate, and at least the wavelength division multiplexing component and the filter are installed on the substrate.

[0018] In this solution, the wavelength division multiplexing component and the filter are installed on the substrate, and the relative installation positions of the wavelength division multiplexing component and the filter are more stable.

[0019] Preferably, in order to facilitate the installation of the substrate, the substrate described in this solution is a transparent substrate.

[0020] In order to make the size of the optical device smaller, a second aspect of the present utility model provides an optical device, which includes the above-mentioned wavelength division multiplexing module.

[0021] Since the above-mentioned wavelength division multiplexing module is used in the optical device, the width of the optical device can be smaller, solving the deficiencies of the optical device in the prior art.

[0022] Preferably, in order to install the wavelength division multiplexing module and to adapt to the wavelength division multiplexing module. This solution further includes a housing and a signal receiving module; an accommodation cavity is constructed inside the housing, the wavelength division multiplexing module is installed in the accommodation cavity, the signal receiving module is installed on the side wall of the housing, and the signal receiving module is arranged corresponding to the wavelength division multiplexing module.

[0023] This solution sets the wavelength division multiplexing module, so as to ensure that the size of the optical device can be set narrower. Secondly, a signal receiving module is set to adapt to the wavelength division multiplexing module, ensuring that the optical signal processed by the signal receiving module can be received by the signal receiving module.

[0024] Preferably, in order to enable the optical device to work properly and ensure that the optical signal can irradiate the wavelength division multiplexing module. This solution further includes a signal transmitting module, the signal transmitting module is installed in the accommodation cavity, and the signal transmitting module is arranged corresponding to the wavelength division multiplexing module.

[0025] The beneficial effect of the present utility model is that: in the wavelength division multiplexing module in the prior art, a large factor affecting the size of the wavelength division multiplexing module is that a filter needs to be configured and installed at the position corresponding to the signal receiving end of the wavelength division multiplexing module to realize the filtering of the optical signal entering the signal receiving end. In this solution, the filter is directly set at the signal output position of the wavelength division multiplexing component, so the size of the entire wavelength division multiplexing module is reduced. Then, because the position of the filter is changed, the position where the filter is set in the prior art is vacated, and further when the signal receiving end is installed, the front end of the signal receiving end can be closer to the inside of the optical device, realizing the reduction of the size of the entire optical device. Description of the Drawings

[0026] Figure 1 It is a schematic structural diagram of the wavelength division multiplexing module.

[0027] Figure 2 It is a schematic diagram when the optical signal is incident.

[0028] Figure 3Schematic diagram of light signal input and output.

[0029] Figure 4 Schematic diagram of setting a filter in the prior art.

[0030] Figure 5 Schematic diagram of the optical device in Embodiment 2.

[0031] Reference numerals include: wavelength division multiplexing component 1, light-transmitting prism 11, S1 filtering component 12, S2 filtering component 13, S3 filtering component 14, S4 filtering component 15, S5 filtering component 15, S6 filtering component 17, first discrete filter 2, first reflector 3, second discrete filter 4, second reflector 5, total reflection mirror 6, substrate 7, housing 8, signal transmitting module 9, first signal transmitting end 91, second signal transmitting end 92, third signal transmitting end 93, beam combiner 94, signal receiving module 10, first signal receiving end 101, second signal receiving end 102, third signal receiving end 103. Detailed implementation manners

[0032] In order to make the objectives, technical solutions and advantages of the embodiments more clear and understandable, the following further details the present invention in conjunction with the accompanying drawings and embodiments. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0033] In the present disclosure, unless otherwise stated, the orientation terms such as "inside, outside" are defined according to the own contours of the corresponding components. The terms such as "first, second" used in the present disclosure are used to distinguish one element from another, and do not have sequence and importance.

[0034] Embodiment 1

[0035] Basically as shown in the attached Figure 1 As shown, a wavelength division multiplexing module includes a wavelength division multiplexing component 1, a filter, a reflector, a total reflection mirror 6 and a substrate 7.

[0036] As Figure 1As shown, the wavelength division multiplexing component 1 specifically includes a light-transmitting prism 11 and six filtering components. The filtering components can be filter films. The six filtering components are an S1 filtering component 12, an S2 filtering component 13, an S3 filtering component 14, an S4 filtering component 15, an S5 filtering component 16, and an S6 filtering component 17. The six filtering components are alternately arranged on the left and right sides of the light-transmitting prism 11. That is: the S2 filtering component 13, the S4 filtering component 15, and the S6 filtering component 17 are arranged at the incident end of the light-transmitting prism 11, and the S1 filtering component 12, the S3 filtering component 14, and the S5 filtering component 16 are arranged at the COM end of the light-transmitting prism 11.

[0037] The light-transmitting prism 11 and the six filtering components process three optical signals. The three optical signals can be emitted from the S3 filtering component, the S4 filtering component, and the S6 filtering component respectively. That is, the positions where the S3 filtering component, the S4 filtering component, and the S6 filtering component are arranged are the first signal output position, the second signal output position, and the third signal output position. As Figure 2 shown.

[0038] Specifically, there are two filter films, namely a first discrete filter film 2 and a second discrete filter film 4. The first discrete filter film 2 is arranged corresponding to the first signal output position to ensure that the optical signal arranged at the first signal output position is jointly filtered by the first discrete filter film 2 and the S3 filtering component; the second discrete filter film 4 is arranged corresponding to the second signal output position to ensure that the optical signal arranged at the second signal output position is jointly filtered by the second discrete filter film 4 and the S4 filtering component.

[0039] After the optical signal is emitted from the filter film, in order to ensure that the optical signal can be introduced into the signal receiving end. Therefore, a reflecting mirror is arranged corresponding to the filter film in this embodiment. The reflecting mirror specifically includes a first reflecting mirror 3 and a second reflecting mirror 5. The first reflecting mirror 3 is arranged corresponding to the first discrete filter film 2, and the second reflecting mirror 5 is arranged corresponding to the second discrete filter film 4. Therefore, the optical signal emitted from the first discrete filter film 2 is reflected by the first reflecting mirror 3, and finally the optical signal enters the signal receiving end; the optical signal emitted from the second discrete filter film 4 is reflected by the second reflecting mirror 5, and finally the optical signal enters the signal receiving end.

[0040] Since the second discrete filter film 4 is arranged at the incident end of the wavelength division multiplexing component 1 and the position occupied by the second discrete filter film 4 is relatively large, no filter film is arranged corresponding to the third signal output position, but a total reflecting mirror 6 is directly arranged corresponding to the third signal output position. The total reflecting mirror 6 is used to reflect the optical signal emitted from the total reflecting mirror 6 into the signal receiving end. The optical signal output from the third signal output position is filtered by the S5 filtering component and the S6 filtering component.

[0041] It can be understood that: in some embodiments, if the size of the second discrete filter 4 is set to be small, a filter can also be correspondingly set at the third signal output position, and then the total reflection mirror 6 is set corresponding to the filter.

[0042] To ensure that the relative positions of the wavelength division multiplexing component 1, the filter, the reflector, and the total reflection mirror 6 are fixed, facilitating the subsequent installation of the wavelength division multiplexing module into the optical device, the wavelength division multiplexing component 1, the filter, the reflector, and the total reflection mirror 6 are all installed on the substrate 7. The wavelength division multiplexing component 1, the filter, the reflector, and the total reflection mirror 6 can be fixedly installed on the substrate 7 by means such as bonding, so that the wavelength division multiplexing component 1, the filter, the reflector, and the total reflection mirror 6 are stable on the substrate 7, and the wavelength division multiplexing component 1, the filter, the reflector, and the total reflection mirror 6 correspond to each other. The substrate 7 is preferably a transparent glass substrate, so that the substrate 7 can be fixedly installed by curing the UV glue by irradiating UV.

[0043] In the wavelength division multiplexing module in the prior art, a large factor affecting the size of the wavelength division multiplexing module is that a filter needs to be configured and installed at the corresponding signal receiving end to filter the optical signal entering the signal receiving end, as Figure 4 shown. In this embodiment, the filter is directly set at the signal output position of the wavelength division multiplexing component 1, as Figure 1 shown. Obviously, the width of the entire wavelength division multiplexing module is reduced. Then, since the position of the filter is changed, the position where the filter is set in the prior art is vacated, so that when the signal receiving end is installed, the front end of the signal receiving end can be closer to the inside of the optical device, realizing the reduction of the size in the width direction of the entire optical device.

[0044] The following is a more detailed description through specific embodiments: The optical signal first enters the light-transmitting prism 11 from the S1 filtering component and irradiates the S2 filtering component. The S2 filtering component reflects the optical signal to the S3 filtering component.

[0045] The first optical signal exits from the S3 filtering component, irradiates the first discrete filter 2, and is finally reflected by the first reflector 3 into the first signal receiving end 101.

[0046] The second optical signal and the third optical signal are reflected by the S3 filtering component and reflected to the S4 filtering component. The second optical signal exits from the S4 filtering component, irradiates the second discrete filter 4, and is finally reflected by the second reflector 5 into the second signal receiving end 102.

[0047] The third optical signal is reflected by the S4 filtering component and reflected to the S5 filtering component. The S5 filtering component reflects the third optical signal to the S6 filtering component. The third optical signal exits from the S6 filtering component and is finally reflected by the total reflection mirror 6 into the third signal receiving end 103.

[0048] Embodiment 2

[0049] This embodiment provides an optical device, as Figure 5 shown, including the wavelength division multiplexing module of Embodiment 1, a signal transmitting module 9, a signal receiving module 10, an optical fiber adapter, and a housing 8.

[0050] The housing 8 in this embodiment is made of kovar alloy as a whole, which is easy to process and has a low cost. The housing 8 specifically includes a base and a cover. The base is rectangular as a whole, and a receiving cavity is constructed inside the base. The cover is installed above the base (the cover is not shown in the figure). The cover is in the shape of a rectangular plate and is used to close the top of the receiving cavity, making the inside of the receiving cavity airtight. When the inside of the receiving cavity is airtight. When implementing the cover, it can be installed on the base by means of welding or bonding.

[0051] The receiving cavity specifically includes a signal transmitting cavity and a signal processing cavity. The signal transmitting cavity is located at the right end of the receiving cavity, and the signal processing cavity is located at the left end of the receiving cavity. The signal transmitting cavity and the signal processing cavity are in a communicating state to ensure the normal transmission of optical signals. The signal transmitting cavity is used for installing the signal transmitting module 9, and the signal processing cavity can install the wavelength division multiplexing module. A TO package base is provided on the side of the housing 8, and the TO package base is used for installing the signal receiving module 10. There are three TO package bases, namely the first TO package base, the second TO package base, and the third TO package base.

[0052] The signal transmitting module 9 can be the signal transmitting module 9 in the prior art, and the signal transmitting module 9 is specifically installed inside the signal transmitting cavity. The signal transmitting module 9 specifically may include a first signal transmitting end 91, a second signal transmitting end 92, a third signal transmitting end 93, and a beam combiner 94. The three signal transmitting ends are optical chips in the prior art for emitting optical signals. The three signal transmitting ends respectively emit optical signals adapted to the 50G communication wavelength, the 10G communication wavelength, and the 2.5G communication wavelength. The beam combiner 94 can be a PBS. The beam combiner 94 is provided corresponding to the first signal transmitting end 91, the second signal transmitting end 92, and the third signal transmitting end 93, and the beam combiner 94 is used for combining the optical signals emitted by the first signal transmitting end 91, the second signal transmitting end 92, and the third signal transmitting end 93.

[0053] The signal receiving module 10 includes a first signal receiving end 101, a second signal receiving end 102, and a third signal receiving end 103. The first signal receiving end 101, the second signal receiving end 102, and the third signal receiving end 103 are respectively disposed on the first TO package base, the second TO package base, and the third TO package base. The first signal receiving end 101 can receive the first light signal emitted from the wavelength division multiplexing module, the second signal receiving end 102 can receive the second light signal emitted from the wavelength division multiplexing module; the third signal receiving end 103 can receive the third light signal emitted from the wavelength division multiplexing module.

[0054] In this embodiment, an optical fiber adapter (not shown in the figure) is disposed at the end of the housing 8. The optical fiber adapter is used to adapt to the optical fiber, so that the optical device can realize the optical signal transmission with the outside. The optical fiber adapter is disposed corresponding to the wavelength division multiplexing module to ensure that the light signal emitted from the wavelength division multiplexing module can enter the optical fiber adapter; at the same time, the light signal emitted from the optical fiber adapter can enter the wavelength division multiplexing module.

[0055] The following introduces the transmission path of the optical signal when the optical device works:

[0056] The optical signal is first output from the first signal transmitting end 91, the second signal transmitting end 92, and the third signal transmitting end 93. The three light signals emitted from the first signal transmitting end 91, the second signal transmitting end 92, and the third signal transmitting end 93 are combined by the combiner 94, then enter the wavelength division multiplexing module, and finally pass through the wavelength division multiplexing module and enter the optical fiber adapter.

[0057] The optical signal output from the optical fiber adapter enters the wavelength division multiplexing module. The wavelength division multiplexing module respectively guides the first optical device, the second optical device, and the third optical device into the first signal receiving end 101, the second signal receiving end 102, and the third signal receiving end 103.

[0058] The above are only the embodiments of the present invention. Common knowledge such as specific structures and characteristics in the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners in the specification can be used to explain the content of the claims.

Claims

1. A wavelength division and combination module, comprising a wavelength division multiplexing component, wherein the wavelength division multiplexing component comprises a light-transmitting prism and a filtering component, wherein the filtering component is arranged on both sides of the light-transmitting prism, characterized in that: Also included are discrete filters; The wavelength division multiplexing component is provided with three signal output positions, and at least one signal output position is provided with a discrete filter.

2. The wave splitting and combining module according to claim 1, characterized in that: The wavelength division multiplexing component includes a first signal output bit, a second signal output bit and a third signal output bit.

3. The wave splitting and combining module according to claim 2, characterized in that: The filter comprises a first discrete filter, and the first discrete filter is arranged at the first signal output position; and / or; The filter includes a second discrete filter, and the second discrete filter is arranged at the second signal output position.

4. The wave splitting and combining module according to claim 3, characterized in that: Also included is a first reflector, the first reflector being arranged corresponding to the first discrete filter; and / or; It also includes a second reflector, which is arranged corresponding to the second discrete filter.

5. The wave splitting and combining module according to claim 2, characterized in that: It also includes a total reflection mirror, which is arranged at the third signal output position.

6. The wave splitting and combining module according to any one of claims 1 to 5, characterized in that: It also includes a substrate, at least the wavelength division multiplexing component and the filter are installed on the substrate.

7. The wave splitting and combining module according to claim 6, characterized in that: The substrate is a transparent substrate.

8. An optical device, characterized in that: It comprises the wave splitting and combining module as described in any one of claims 1 to 7.

9. The optical device according to claim 8, characterized in that: Also includes a housing and a signal receiving module; The shell has an accommodating cavity inside, the wave splitting and combining module is installed in the accommodating cavity, the signal receiving module is installed on the side wall of the shell, and the signal receiving module is arranged corresponding to the wave splitting and combining module.

10. The optical device according to claim 9, characterized in that: It also includes a signal transmitting module, which is installed in the accommodating cavity and is arranged corresponding to the wave separation and combination module.

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