Internal optical path structure of COMBO device and COMBO device

Abstract

The utility model relates to the technical field of optical communication devices, and discloses an internal optical path structure of a COMBO device and the COMBO device, the COMBO device comprises an adapter and less than or equal to 3 TO structures, the internal optical path structure comprises a filter, and emitted light emitted by each TO structure can be emitted from the adapter; incident light incident through the adapter is split by the filter and then is received by each TO structure; the COMBO device comprises a main body. A first TO structure, a second TO structure, a first filter, a collimating lens and an adapter are integrated on the main body. The first TO structure, the first filter, the collimating lens and the adapter form a first emission light path and a first detection light path, and the second TO structure, the first filter, the collimating lens and the adapter form a second emission light path and a second detection light path. According to the COMBO device, the total size of the COMBO device is reduced, the light path of emitted light is shorter, the internal light path of the device is simpler, and the structural stability after coupling is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication devices, in particular to an internal optical path structure of a COMBO device and the COMBO device. Background Art

[0002] In optical communication networks, in order to save optical fiber resources and meet the transition requirements of forward and backward compatibility during the upgrade of passive optical network bandwidth, a hybrid passive optical network solution is adopted, that is, two sets of optical components are set in one device. The specific structure generally adopts the method of combining and packaging four discrete devices, that is, two TO-packaged laser transmitters and two TO-packaged detection chips are welded on a metal tube body, and filters with specified angles are set in the metal tube body to realize the separation and combination of these four wavelength signals and share one optical fiber.

[0003] Although the above method is suitable for hybrid passive optical network solutions, the COMBO device composed of 4 TO-packaged optical devices has a large product size and cannot meet the length requirements of small packages. In addition, the process technology of using 4 TO packages is relatively complicated, and the structural stability after coupling is poor. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide an internal optical path structure of a COMBO device and a COMBO device, wherein the entire COMBO device integrates fewer TO structures, thereby reducing the overall size of the COMBO device, making the optical path of the emitted light shorter, and increasing the structural stability after coupling.

[0005] The utility model solves the above technical problems through the following technical means:

[0006] In the first aspect, the utility model discloses an internal optical path structure of a COMBO device, the COMBO device includes an adapter and ≤3 TO structures, the internal optical path structure includes a filter, and the emitted light emitted by each of the TO structures can be emitted from the adapter; the incident light incident through the adapter is split by the filter and then received by each of the TO structures.

[0007] Furthermore, the number of TO structures is 2, namely the first TO structure and the second TO structure; the COMBO device also includes a first filter and a collimating lens; the first emission light emitted by the first TO structure is transmitted through the first filter and the collimating lens in sequence, and then emitted from the adapter; the first incident light incident through the adapter is transmitted through the collimating lens and the first filter in sequence, and is reflected to the first TO structure; the second emission light emitted by the second TO structure is transmitted through the first filter and the collimating lens in sequence, and then emitted from the adapter; the second incident light incident through the adapter is transmitted through the collimating lens and the first filter in sequence, and is reflected to the second TO structure.

[0008] In a second aspect, the utility model further discloses a COMBO device, which uses the above-mentioned optical path structure to realize the emission and reception of device light.

[0009] Furthermore, the COMBO device includes a main body, on which a first TO structure, a second TO structure, a first filter, a collimating lens and an adapter are integrated; the first TO structure, the first filter, the collimating lens and the adapter constitute a first emission light path and a first detection light path, and the second TO structure, the first filter, the collimating lens and the adapter constitute a second emission light path and a second detection light path.

[0010] Furthermore, the first TO structure includes a first base, a first laser chip, a first detection chip, a first collimating LENS, a second collimating LENS, a second filter, a third filter and a first tube cap, and the first laser chip, the first detection chip, the first collimating LENS, the second collimating LENS, the second filter, and the third filter are all integrated in the first tube cap, and the first tube cap is set on the first base.

[0011] Furthermore, the second TO structure includes a second base, a second laser chip, a second detection chip, a third collimating LENS, a fourth collimating LENS, a fourth filter, a fifth filter and a second tube cap; the second laser chip, the second detection chip, the third collimating LENS, the fourth collimating LENS, the fourth filter and the fifth filter are all integrated in the second tube cap; and the second tube cap is arranged on the second base.

[0012] Furthermore, the first emission light emitted by the first laser chip sequentially transmits the first collimating lens, the second filter, the first filter, and the collimating lens, and then exits from the adapter; the first incident light incident through the adapter sequentially transmits the collimating lens, the first filter, the fourth filter, the fifth filter, and the third collimating lens and is reflected to the first detection chip.

[0013] Furthermore, the second emission light emitted by the second laser chip sequentially transmits the fourth collimating lens, the fourth filter, the first filter, and the collimating lens, and then exits from the adapter; the second incident light incident through the adapter sequentially transmits the collimating lens, the first filter, the second filter, the third filter, the second collimating lens, and is reflected to the second detection chip.

[0014] Furthermore, the first filter, the second filter, the third filter, the fourth filter and the fifth filter are all 45° filters.

[0015] Furthermore, the base is a gold-plated metal base, and the first tube cap and the second tube cap are both resistance welded to the gold-plated metal base.

[0016] Beneficial effects of the utility model:

[0017] 1. The entire COMBO device of the present invention has fewer TO structures, thereby reducing the overall size of the COMBO device, making the optical path of the emitted light shorter, and further increasing the structural stability of the device after coupling.

[0018] 2. The utility model shortens the manufacturing process of the entire COMBO device by integrating the first TO structure and the second TO structure. Such a four-light-path COMBO device can be manufactured through only two coupling processes, and the manufacturing process is simpler, more efficient and less costly.

[0019] 3. When using the COMBO device of the utility model, the COMBO module can adopt a double soft belt structure, which reduces two welding processes in the module manufacturing process and improves the manufacturing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the internal optical path structure of a COMBO device and the COMBO device.

[0021] Among them, 1. first TO structure; 2. second TO structure; 3. main body; 4. first 45° filter 4; 5. collimating lens; 6. adapter;

[0022] 11. First laser chip; 12. First detection chip; 13. First collimation lens; 14. Second collimation lens; 15. Second 45° filter; 16. Third 45° filter; 17. First tube cap;

[0023] 21. The second laser chip; 22. The second detection chip; 23. The third collimating lens; 24. The fourth collimating lens; 25. The fourth 45° filter; 26. The fifth 45° filter; 27. The second tube cap. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are only for exemplary descriptions, and they are only schematic diagrams, not physical diagrams, and cannot be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0025] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the figures, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] Embodiment 1,

[0027] This embodiment is a COMBO device, such as Figure 1 As shown: it includes a main body 3, the main body 3 of this embodiment is a metal tube shell, and the main body 3 is integrated with a first TO structure 1, a second TO structure 2, a first 45° filter 4, a collimating lens 5 and an adapter 6; the first TO structure 1 and the first 45° filter 4, the collimating lens 5 and the adapter 6 constitute a first emission light path and a first detection light path, and the second TO structure 2 and the first 45° filter 4, the collimating lens 5 and the adapter 6 constitute a second emission light path and a second detection light path.

[0028] The first TO structure 1 of the present embodiment includes a first base, a first laser chip 11, a first detection chip 12, a first collimating LENS 13, a second collimating LENS 14, a second 45° filter 15, a third 45° filter 16 and a first tube cap 17. The first laser chip 11, the first detection chip 12, the first collimating LENS 13, the second collimating LENS 14, the second 45° filter 15, and the third 45° filter 16 are all integrated in the first tube cap 17, and the first tube cap 17 is welded to the first base by resistance welding; the first emission light emitted by the first laser chip 11 sequentially transmits the first collimating LENS 13, the second 45° filter 15, the first 45° filter 4, and the collimating lens 5, and then passes through the adapter 6. Emission; the second TO structure 2 of this embodiment includes a second laser chip 21, a second detection chip 22, a third collimating LENS23, a fourth collimating LENS24, a fourth 45° filter 25, a fifth 45° filter 26 and a second tube cap 27. The second laser chip 21, the second detection chip 22, the third collimating LENS23, the fourth collimating LENS24, the fourth 45° filter 25, and the fifth 45° filter 26 are all integrated in the second tube cap 27, and the second tube cap 27 is welded to the second base by resistance welding; the second emission light emitted by the second laser chip 21 is transmitted through the fourth collimating LENS24, the fourth 45° filter 25, the first 45° filter 4, and the collimating lens 5 in sequence, and then emitted through the adapter 6.

[0029] The first incident light incident through the adapter 6 is transmitted through the collimating lens 5, the first 45° filter 4, the fourth 45° filter 25, the fifth 45° filter 26, and the third collimating LENS23 in sequence and is reflected to the first detection chip 12; the second incident light incident through the adapter 6 is transmitted through the collimating lens 5, the first 45° filter 4, the second 45° filter 15, the third 45° filter 16, and the second collimating LENS14 in sequence and is reflected to the second detection chip 22.

[0030] A TO structure of this embodiment has two collimated LENS built in, and the light splitting of the light receiving and light paths is realized through a 45° filter; the first collimated LENS13 and the fourth collimated LENS24 realize the conversion of the laser divergent light into parallel light, and the second collimated LENS14 and the third collimated LENS23 realize the conversion of parallel light into convergent light to the photosensitive surface of the detector.

[0031] The second 45° filter 15 and the fourth 45° filter 25 allow the light emitted by the laser to pass through and the light emitted by the optical fiber to reflect, thereby realizing the internal optical path splitting of the TO. The third 45° filter 16 and the fifth 45° filter 26 reflect the light to the photosensitive surface of the detector.

[0032] The COMBO device of this embodiment integrates the first laser chip 11, the first detection chip 12, the first collimating LENS13, the second collimating LENS14, the second 45° filter 15, and the third 45° filter 16 in the first TO structure 1, and integrates the second laser chip 21, the second detection chip 22, the third collimating LENS23, the fourth collimating LENS24, the fourth 45° filter 25, and the fifth 45° filter 26 in the second TO structure 2. The entire COMBO device has only two TO structures, thereby reducing the overall size of the COMBO device, making the optical path of the emitted light shorter, and thus increasing the structural stability of the device after coupling. In addition, the COMBO device shortens the manufacturing process of the entire COMBO device through the integration of the first TO structure 1 and the second TO structure 2. The COMBO device with four optical paths can be manufactured through only two coupling processes, and the manufacturing process is simpler, more efficient, and less costly.

[0033] Embodiment 2,

[0034] This embodiment is an internal optical path structure of a COMBO device, and the internal optical path structure of this embodiment uses the COMBO device in Embodiment 1. During signal light transmission, the first emission light emitted by the first laser chip 11 sequentially transmits the first collimating LENS 13, the second 45° filter 15, the first 45° filter 4, and the collimating lens 5, and then exits through the adapter 6; the first incident light incident through the adapter 6 sequentially transmits the collimating lens 5, the first 45° filter 4, the fourth 45° filter 25, the fifth 45° filter 26, and the third collimating LENS 23 and is reflected to the first detection chip 12.

[0035] The second emission light emitted by the second laser chip 21 sequentially transmits the fourth collimating LENS 24, the fourth 45° filter 25, the first 45° filter 4, and the collimating lens 5, and then exits through the adapter 6; the second incident light incident through the adapter 6 sequentially transmits the collimating lens 5, the first 45° filter 4, the second 45° filter 15, the third 45° filter 16, and the second collimating LENS 14 and is reflected to the second detection chip 22.

[0036] The COMBO device using the optical path structure of photoelectric conversion in this embodiment only needs to integrate two TO structures, thereby reducing the overall size of the COMBO device, making the optical path of the emitted light shorter, and increasing the structural stability of the device after coupling.

[0037] The above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model. The technology, shape, and structure that are not described in detail in the utility model are all well-known technologies.

Claims

1. An internal optical path structure of a COMBO device, characterized in that: The COMBO device includes an adapter and ≤3 TO structures, the internal optical path structure includes a filter, and the emission light emitted by each TO structure can be emitted from the adapter; The incident light incident through the adapter is split by the filter and then received by each of the TO structures.

2. The internal optical path structure of a COMBO device according to claim 1, characterized in that: The number of the TO structures is 2, namely the first TO structure and the second TO structure; the COMBO device also includes a first filter and a collimating lens; the first emission light emitted by the first TO structure is sequentially transmitted through the first filter and the collimating lens, and then emitted from the adapter; the first incident light incident through the adapter is sequentially transmitted through the collimating lens, the first filter and reflected to the first TO structure; the second emission light emitted by the second TO structure is sequentially transmitted through the first filter and the collimating lens, and then emitted from the adapter; the second incident light incident through the adapter is sequentially transmitted through the collimating lens, the first filter and reflected to the second TO structure.

3. A COMBO device, characterized in that: The COMBO device uses the optical path structure described in claim 1 to realize the emission and reception of device light.

4. The COMBO device according to claim 3, comprising a main body, characterized in that: The main body is integrated with a first TO structure, a second TO structure, a first filter, a collimating lens and an adapter; The first TO structure, the first filter, the collimating lens and the adapter form a first emission light path and a first detection light path, and the second TO structure, the first filter, the collimating lens and the adapter form a second emission light path and a second detection light path.

5. The COMBO device according to claim 4, characterized in that: The first TO structure includes a first base, a first laser chip, a first detection chip, a first collimating LENS, a second collimating LENS, a second filter, a third filter and a first tube cap. The first laser chip, the first detection chip, the first collimating LENS, the second collimating LENS, the second filter and the third filter are all integrated in the first tube cap, and the first tube cap is set on the first base.

6. The COMBO device according to claim 5, characterized in that: The second TO structure includes a second base, a second laser chip, a second detection chip, a third collimating LENS, a fourth collimating LENS, a fourth filter, a fifth filter and a second tube cap. The second laser chip, the second detection chip, the third collimating LENS, the fourth collimating LENS, the fourth filter and the fifth filter are all integrated in the second tube cap, and the second tube cap is set on the second base.

7. The COMBO device according to claim 6, characterized in that: The first emission light emitted by the first laser chip sequentially transmits the first collimating lens, the second filter, the first filter, and the collimating lens, and then exits from the adapter; the first incident light incident through the adapter sequentially transmits the collimating lens, the first filter, the fourth filter, the fifth filter, and the third collimating lens, and then reflects to the first detection chip.

8. The COMBO device according to claim 7, characterized in that: The second emission light emitted by the second laser chip sequentially transmits the fourth collimating lens, the fourth filter, the first filter, and the collimating lens, and then exits from the adapter; the second incident light incident through the adapter sequentially transmits the collimating lens, the first filter, the second filter, the third filter, the second collimating lens, and is reflected to the second detection chip.

9. The COMBO device according to any one of claims 6 to 8, characterized in that: The first filter, the second filter, the third filter, the fourth filter and the fifth filter are all 45° filters.

10. The COMBO device according to claim 6, characterized in that: The base is a gold-plated metal base, and the first tube cap and the second tube cap are both resistance welded on the gold-plated metal base.

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