Light emitter
By designing a transmitting module, an optical path adjustment module and a total reflection coupling module in the optical transmitter, a wavelength division multiplexing device is formed to input multiple optical signals into the same optical fiber, which solves the problem of complex packaging and high cost of existing optical transmitters. solve the problem and achieve optical signal transmission with simple structure, simple packaging and low cost.
Patent Information
- Application Number
- CN202420743769.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-04-10
AI Technical Summary
The existing optical transmitters have complex packaging processes and high cost problems, making it difficult to transmit multiple independent optical signals while keeping the packaging simple and low cost.
Design an optical transmitter, including a transmitting module, an optical path adjustment module, a total reflection coupling module, and an optical fiber module. The optical path adjustment module and the total reflection coupling module form a wavelength division multiplexing device to combine multiple light paths emitted by multiple transmitting components. The signals are multiplexed/wavelength-division multiplexed, so that multiple optical signals are input into the same optical fiber for signal transmission.
The entire device has a simple structure and packaging process, and only requires one optical fiber in the communication link, effectively reducing production costs.
Smart Images
Figure CN222365111U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical modules, in particular to an optical transmitter. Background Art
[0002] Optical transmitters are commonly used in optical communications, optical networks, optical sensors and other fields. They can transmit multiple independent optical signals simultaneously in a single device, thereby improving the efficiency and capacity of data transmission. Generally speaking, each optical channel requires an independent optical fiber to transmit the optical signal, which means that optical transmitters often require multiple optical fibers, and the packaging process of the entire device is complex and costly.
[0003] Therefore, it is very important for those skilled in the art to design an optical transmitter that can transmit multiple independent optical signals and has simple packaging and low cost. Utility Model Content
[0004] The technical problem to be solved by the embodiments of the present utility model is to provide an optical transmitter capable of transmitting multiple independent optical signals and having a simple packaging process and low cost, so as to solve the problem of complex packaging and high cost in the prior art.
[0005] The utility model discloses an optical transmitter, which comprises a transmitting module, an optical path adjustment module, a total reflection coupling module and an optical fiber module; the optical fiber module comprises an optical fiber and a core assembly, and the optical fiber is connected to the core assembly; the transmitting module comprises a plurality of transmitting assemblies, so as to transmit a plurality of light beams with different wavelengths; the plurality of light beams enter the total reflection coupling module after being adjusted in the optical path by the optical path adjustment module, and are coupled to the optical fiber after being converged by the total reflection coupling module, so as to transmit the optical signal.
[0006] Optionally, the emitting component includes a laser chip, a collimating lens, a chip carrier and a light detector, the laser chip is arranged on the chip carrier, the collimating lens is arranged on the light emitting surface of the laser chip, and the light detector is arranged on the backlight surface of the laser chip.
[0007] Optionally, the optical path adjustment module includes an optical carrier, at least one filter and at least one total reflection mirror, the filter and the total reflection mirror are both pasted on the optical carrier, and the light beam entering the optical path adjustment module is refracted by the optical carrier, or is transmitted through the filter and then emitted to the total reflection mirror, and is reflected by the total reflection mirror and the filter and then emitted to the total reflection coupling module.
[0008] Optionally, the filter is bonded to a side of the optical carrier facing the emission module, and the total reflection mirror is bonded to a side of the optical carrier facing the total reflection coupling module.
[0009] Optionally, a total reflection film is coated on a side surface of the filter for bonding to the optical carrier, and a filtering film is coated on a side surface of the filter facing the emission module.
[0010] Optionally, a total reflection film is coated on one side of the total reflection mirror for bonding to the optical carrier.
[0011] Optionally, the total reflection coupling module includes at least one total reflection surface and at least one coupling lens, and the light beam incident on the total reflection coupling module is totally reflected by its total reflection surface to the coupling lens, and is coupled to the optical fiber module through the coupling lens.
[0012] Optionally, the transmitting module includes 8 transmitting components, the optical path adjustment module includes 6 filters and 2 total reflection mirrors, the optical carrier is V-shaped, 3 filters are respectively arranged on the two concave surfaces of the optical carrier, and 1 total reflection mirror is respectively arranged on the two outer surfaces of the optical carrier.
[0013] Optionally, it further includes a refrigerator and a heat-conducting base plate, and the refrigerator, the transmitting module, the optical path adjustment module, the total reflection coupling module and the optical fiber module are all arranged on the heat-conducting base plate.
[0014] Optionally, a shell for packaging is further included, one end of the shell is provided with a power pin, and the other end of the shell is provided with a through hole for avoiding the optical fiber.
[0015] Compared with the prior art, the beneficial effect of the optical transmitter provided by the embodiment of the utility model is that: by designing an optical transmitter, which includes a transmitting module with multiple transmitting components, an optical path adjustment module, a total reflection coupling module and an optical fiber module with a single output optical fiber, a wavelength division multiplexing device is formed by utilizing the optical path adjustment module and the total reflection coupling module to combine / wavelength division multiplex the multiple optical signals emitted by the multiple transmitting components, so that the multiple optical signals are input into the same optical fiber for signal transmission. Not only is the structure of the entire device simple and the packaging process simple, but only one optical fiber is needed in the communication link to meet the signal transmission requirements, effectively reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The technical solution of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0017] In the figure:
[0018] Figure 1 This is a schematic diagram of the structure of the light transmitter provided by the embodiment of the utility model Figure 1 ;
[0019] Figure 2It is a structural schematic diagram of a launch assembly provided in an embodiment of the utility model;
[0020] Figure 3 It is a structural schematic diagram of the optical path adjustment module provided by an embodiment of the utility model;
[0021] Figure 4 It is a structural schematic diagram of a total reflection coupling module provided by an embodiment of the utility model;
[0022] Figure 5 It is a schematic diagram of the optical path of the optical transmitter provided by the embodiment of the utility model;
[0023] Figure 6 This is a schematic diagram of the structure of the light transmitter provided by the embodiment of the utility model Figure 2 . DETAILED DESCRIPTION
[0024] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.
[0025] like Figures 1 to 6 As shown, the utility model provides a specific embodiment of a light transmitter.
[0026] A light transmitter, reference Figure 1 The optical transmitter includes a transmitting module 1, an optical path adjustment module 2, a total reflection coupling module 3 and an optical fiber module 4; the optical fiber module 4 includes an optical fiber 41 and a core assembly 42, and the optical fiber 41 is connected to the core assembly 42; the transmitting module 1 includes a plurality of transmitting assemblies 11, which are used to transmit multiple light beams with different wavelengths; after the multiple light beams are adjusted by the optical path adjustment module 2, they all enter the total reflection coupling module 3, and are converged by the total reflection coupling module 3 and coupled to the optical fiber 41 to transmit the optical signal.
[0027] Specifically, refer to Figure 1 The transmitting module 1 serves as a multi-path transmitting signal light source in the optical transmitter, and includes a plurality of transmitting components 11 with different working / transmitting wavelengths, so as to transmit a plurality of light beams with different wavelengths; the optical path adjustment module 2 is used to adjust the optical propagation paths of the multiple light beams with different wavelengths emitted by the multiple transmitting components 11, so that the multiple light beams with different wavelengths are all emitted to the total reflection coupling module 3; the total reflection coupling module 3 is used to reflect the multiple light beams that are injected and couple them into one light beam; the coupled one light beam will be output through the single optical fiber 41 in the optical fiber module 4.
[0028] Generally speaking, each optical channel requires an independent optical fiber to transmit the optical signal, which means that the optical transmitter often requires multiple optical fibers, and the packaging process of the entire device is complex and costly.
[0029] In this embodiment, an optical transmitter is designed, which includes a transmitting module with multiple transmitting components, an optical path adjustment module, a total reflection coupling module and an optical fiber module with a single output optical fiber. A wavelength division multiplexing device is formed by utilizing the optical path adjustment module and the total reflection coupling module to combine / wavelength division multiplex multiple optical signals emitted by multiple transmitting components, so that the multiple optical signals are input into the same optical fiber for signal transmission. Not only is the structure of the entire device simple and the packaging process simple, but only one optical fiber is needed in the communication link to meet the signal transmission requirements, thereby effectively reducing the production cost.
[0030] In one embodiment, reference Figure 1 and Figure 2 The emitting component 11 includes a laser chip 111, a collimating lens 112, a chip carrier 113 and a light detector 114. The laser chip 111 is arranged on the chip carrier 113, the collimating lens 112 is arranged on the light emitting surface of the laser chip 111, and the light detector 114 is arranged on the backlight surface of the laser chip 111.
[0031] Specifically, refer to Figure 1 and Figure 2 The chip carrier 113 is a basic material or structure for supporting and protecting the chip, and the laser chip 111 is fixed on the chip carrier 113; the laser chip 111 is used to emit optical signals, and each emitting component 11 includes a laser chip 111, and the laser chips 111 in different emitting components 11 have different working / emitting wavelengths; the collimating lens 112 is arranged on the light emitting surface of the laser chip 111, and is used to receive the divergent light beam emitted forward by the laser chip 111, and collimate the divergent light beam emitted forward by the laser chip 111 to form a collimated light beam, so that the optical fiber 41 maintains parallel propagation, which can not only ensure the transmission stability of the light beam, but also reduce the scattering and diffusion of the light beam.
[0032] Further, refer to Figure 1 and Figure 2 The optical detector 114 is arranged on the backlight surface of the laser chip 111 to receive the light beam emitted backward from the laser chip 111 and perform backlight monitoring to monitor and feedback the emission state and emission light power of the laser chip 111 in real time; wherein the optical detector 114 can be of side receiving type.
[0033] In one embodiment, reference Figure 1 and Figure 3The optical path adjustment module 2 includes an optical carrier 21, at least one filter 22 and at least one total reflection mirror 23. The filter 22 and the total reflection mirror 23 are both pasted on the optical carrier 21. The light beam entering the optical path adjustment module 2 is refracted by the optical carrier 21, or is transmitted through the filter 22 and then emitted to the total reflection mirror 23, and then reflected by the total reflection mirror 23 and the filter 22 and emitted to the total reflection coupling module 3.
[0034] Specifically, refer to Figure 1 and Figure 3 The optical carrier 21 is made of optical / light-transmitting materials, such as glass or silicon. On the one hand, the optical carrier 21 serves as a carrier for the filter 22 and the total reflection mirror 23 for pasting the filter 22 and the total reflection mirror 23; on the other hand, it is used to make the collimated light beam collimated by the collimating lens 112 produce light refraction phenomenon to achieve the required light path control.
[0035] The filter 22 can selectively transmit or block the optical fiber 41 in a specific wavelength range to achieve wavelength selection and segmentation, so that the optical system can process the optical fiber 41 of different wavelengths as needed. By filtering out the light in a specific wavelength range through the filter 22, the stray light and background noise in the system can be reduced to improve the signal-to-noise ratio and performance of the system. In this embodiment, the filter 22 is bonded to the optical carrier 21 to allow the optical signal emitted by the laser chip 111 of the specified working wavelength to be transmitted and totally reflected.
[0036] The total reflection mirror 23 is used to totally reflect the light beam transmitted in the optical carrier 21 to achieve the required light path control.
[0037] Among them, reference Figure 1 and Figure 3 The bonding between the filter 22 and the optical carrier 21 and the bonding between the total reflection mirror 23 and the optical carrier 21 both use optical path glue with the characteristics of high transparency, low bubbles, low refractive index and high temperature resistance to ensure the performance and stability of the optical system, such as epoxy resin glue, optical glue, UV curing glue, optical film or optical adhesive tape.
[0038] In one embodiment, reference Figure 1 and Figure 3 The filter 22 is bonded to a side of the optical carrier 21 facing the emission module 1 , and the total reflection mirror 23 is bonded to a side of the optical carrier 21 facing the total reflection coupling module 3 .
[0039] Specifically, refer to Figure 1 and Figure 3 The filter 22 is bonded to the side of the optical carrier 21 facing the emission module 1, and a side of the filter 22 for bonding with the optical carrier 21 is coated with a total reflection film, and a side of the filter 22 facing the emission module 1 is coated with a filter film.
[0040] Further, refer to Figure 1 and Figure 3 The total reflection mirror 23 has a total reflection film coated on one side thereof for bonding with the optical carrier.
[0041] A portion of the light beam emitted by the laser chip 111 is collimated by the corresponding collimating lens 112, and then directly enters the optical carrier 21, and then enters the total reflection mirror 23 after being refracted by the optical carrier 21, and then enters the total reflection coupling module 3 after multiple reflections by the total reflection mirror 23 and the filter 22; a portion of the light beam emitted by the laser chip 111 is collimated by the corresponding collimating lens 112, and then enters the filter 22. After being filtered by the filter 22, the light beam of a specific wavelength will be transmitted to the optical carrier 21, and then enter the total reflection mirror 23 after being refracted by the optical carrier 21, and then enter the total reflection coupling module 3 after multiple reflections by the total reflection mirror 23 and the filter 22.
[0042] In one embodiment, reference Figures 1 to 3 The total reflection coupling module 3 includes at least one total reflection surface 31 and at least one coupling lens 32. The light beam incident into the total reflection coupling module 3 is totally reflected by the total reflection surface 31 to the coupling lens 32, and is coupled to the optical fiber module 4 through the coupling lens 32.
[0043] Specifically, refer to Figures 1 to 3 A portion of the light beam emitted by the laser chip 111 is collimated by the corresponding collimating lens 112, and then directly enters the optical carrier 21, and is refracted by the optical carrier 21 and enters the total reflection mirror 23, and then is reflected multiple times by the total reflection mirror 23 and the filter 22, and then enters the total reflection surface 31 in the total reflection coupling module 3, and after total reflection by the total reflection surface 31, it enters the coupling lens 32 and is coupled to the optical fiber module 4.
[0044] A portion of the light beam emitted by the laser chip 111 is collimated by the corresponding collimating lens 112 and then incident on the filter 22. After being filtered by the filter 22, the light beam of a specific wavelength will be transmitted to the optical carrier 21, and after being refracted by the optical carrier 21, it will be incident on the total reflection mirror 23, and then after multiple reflections by the total reflection mirror 23 and the filter 22, it will be incident on the total reflection surface 31 in the total reflection coupling module 3, and after total reflection by the total reflection surface 31, it will be incident on the coupling lens 32 and coupled to the optical fiber module 4.
[0045] In one embodiment, reference Figure 1 and Figure 4 The transmitting module 1 includes 8 transmitting components 11, the optical path adjustment module 2 includes 6 filters 22 and 2 total reflection mirrors 23, the optical carrier 21 is V-shaped, and 3 filters 22 are respectively arranged on the two concave surfaces of the optical carrier 21, and 1 total reflection mirror 23 is respectively arranged on the two outer surfaces of the optical carrier 21.
[0046] Specifically, refer to Figure 1 and Figure 4 The transmitting module 1 includes 8 transmitting components 11, namely a first transmitting component 1101, a second transmitting component 1102, a third transmitting component 1103, a fourth transmitting component 1104, a fifth transmitting component 1105, a sixth transmitting component 1106, a seventh transmitting component 1107, and an eighth transmitting component 1108; the first transmitting component 1101 includes a first laser chip, a first chip carrier, a first photodetector and a first collimating lens, and the emission wavelength of the first laser chip is 1250nm; the second transmitting component 1102 includes a second laser chip, a second chip carrier, a second photodetector and a second collimating lens, and the emission wavelength of the second laser chip is 1270nm; the third transmitting component 1103 includes a third laser chip, a third chip carrier, a third photodetector and a third collimating lens, and the emission wavelength of the third laser chip is 1290nm; the fourth transmitting component 1 104 includes a fourth laser chip, a fourth chip carrier, a fourth photodetector and a fourth collimating lens, and the emission wavelength of the fourth laser chip is 1310nm; the fifth emission component 1105 includes a fifth laser chip, a fifth chip carrier, a fifth photodetector and a fifth collimating lens, and the emission wavelength of the fifth laser chip is 1330nm; the sixth emission component 1106 includes a sixth laser chip, a sixth chip carrier, a sixth photodetector and a sixth collimating lens, and the emission wavelength of the sixth laser chip is 1350nm; the seventh emission component 1107 includes a seventh laser chip, a seventh chip carrier, a seventh photodetector and a seventh collimating lens, and the emission wavelength of the seventh laser chip is 1370nm; the eighth emission component 1108 includes an eighth laser chip, an eighth chip carrier, an eighth photodetector and an eighth collimating lens, and the emission wavelength of the eighth laser chip is 1390nm.
[0047] Among them, the working wavelengths of the received optical signals of the first optical detector, the second optical detector, the third optical detector, the fourth optical detector, the fifth optical detector, the sixth optical detector, the seventh optical detector, and the eighth optical detector are all 1200-1600nm.
[0048] Further, refer to Figure 1 and Figure 4The optical path adjustment module 2 includes 6 filters 22, namely a first filter 221, a second filter 222, a third filter 223, a fourth filter 224, a fifth filter 225 and a sixth filter 226; the coating working wavelength of the first filter 221 is to transmit light with a wavelength of 1265-1275nm, and to fully reflect light of other wavelengths; the coating working wavelength of the second filter 222 is to transmit light with a wavelength of 1285-1295nm, and to fully reflect light of other wavelengths; the coating working wavelength of the third filter 223 is to transmit light with a wavelength of 1285-1295nm, and to fully reflect light of other wavelengths; The working wavelength of the film is to transmit light with a wavelength of 1305-1315nm, and to totally reflect light of other wavelengths; the working wavelength of the coating of the fourth filter 224 is to transmit light with a wavelength of 1325-1335nm, and to totally reflect light of other wavelengths; the working wavelength of the coating of the fifth filter 225 is to transmit light with a wavelength of 1345-1355nm, and to totally reflect light of other wavelengths; the working wavelength of the coating of the sixth filter 226 is to transmit light with a wavelength of 1365-1375nm, and to totally reflect light of other wavelengths.
[0049] Further, refer to Figure 1 and Figure 4 The optical path adjustment module 2 includes two total reflection mirrors 23, namely a first total reflection mirror 231 and a second total reflection mirror 232. The coating working wavelength of the first total reflection mirror 231 and the second total reflection mirror 232 is total reflection of light with a wavelength of 1200-1600nm.
[0050] refer to Figure 5 The optical path principle of this embodiment is as follows: the divergent light beam emitted backward by the first laser chip is directly received and detected by the first light detector at its rear end; the divergent light beam emitted forward by the first laser chip is collimated by the first collimating lens to become a collimated light beam, and is transmitted into the optical carrier 21 to refract the light and then enter the first total reflection mirror 231, and then is totally reflected for the first time by the first total reflection mirror 231, and then is transmitted to the first filter 221 and totally reflected for the second time, and then is transmitted to the first total reflection mirror 231 and totally reflected for the third time, and then is transmitted to the second filter 222 and totally reflected for the fourth time, and then is transmitted to the first total reflection mirror 231 again and totally reflected for the fifth time, and then is transmitted to the third filter 223 and totally reflected for the sixth time, and then is transmitted to the outside of the optical carrier 21, and then enters the total reflection coupling module 3, and is totally reflected by the reflection surface of the total reflection coupling module 3, and finally the collimated light beam is converged by the coupling lens 32 in the total reflection coupling module 3, and is coupled into the optical fiber module 4 for transmission.
[0051] The divergent light beam emitted backward by the second laser chip is received and detected by the second light detector at its rear end. The light beam emitted forward by the second laser chip is collimated by the second collimating lens to become a collimated light beam, then emitted into the first filter 221 and enters the optical carrier 21, and passes through multiple total reflections of the first total reflection mirror 231-the second filter 222-the first total reflection mirror 231-the third filter 223 in sequence, and then is transmitted to the outside of the optical carrier 21, and then enters the total reflection coupling module 3.
[0052] The divergent light beam emitted backward by the third laser chip is received and detected by the third light detector at its rear end. The light beam emitted forward by the third laser chip is collimated by the third collimating lens to become a collimated light beam, then emitted into the second filter 222 and enters the optical carrier 21, and passes through multiple total reflections of the first total reflection mirror 231-the third filter 223 in sequence, and then is transmitted to the outside of the optical carrier 21, and then enters the total reflection coupling module 3.
[0053] The divergent light beam emitted backward by the fourth laser chip is directly received and detected by the fourth light detector at its rear end. The divergent light beam emitted forward by the fourth laser chip is collimated by the fourth collimating lens to become a collimated light beam. After passing through the third filter 223, it is transmitted into the optical carrier 21, and then directly output from the optical carrier 21, and then enters the total reflection coupling module 3. After being reflected by the total reflection surface 31 of the total reflection coupling module 3, the collimated light beam is finally converged by the coupling lens 32 in the total reflection coupling module 3, and coupled into the optical fiber module 4 for transmission.
[0054] The divergent light beam emitted backward by the fifth laser chip is directly received and detected by the fifth light detector at its rear end. The divergent light beam emitted forward by the fifth laser chip is collimated by the fifth collimating lens to become a collimated light beam. After passing through the fourth filter 224, it is transmitted into the optical carrier 21, and then directly output from the optical carrier 21, and then enters the total reflection coupling module 3. After being reflected by the total reflection surface 31 of the total reflection coupling module 3, the collimated light beam is finally converged by the coupling lens 32 in the total reflection coupling module 3, and coupled into the optical fiber module 4 for transmission.
[0055] The divergent light beam emitted backward by the sixth laser chip is received and detected by the sixth light detector at its rear end. The light beam emitted forward by the sixth laser chip is collimated by the sixth collimating lens to become a collimated light beam, then emitted into the fifth filter 225 and enters the optical carrier 21, and passes through multiple total reflections of the second total reflection mirror 232-the fourth filter 224 in sequence, and then is transmitted to the outside of the optical carrier 21, and then enters the total reflection coupling module 3.
[0056] The divergent light beam emitted backward by the seventh laser chip is received and detected by the seventh light detector at its rear end. The light beam emitted forward by the seventh laser chip is collimated by the seventh collimating lens to become a collimated light beam, then emitted into the sixth filter 226 and enters the optical carrier 21, and passes through multiple total reflections of the second total reflection mirror 232-the fifth filter 225-the second total reflection mirror 232-the fourth filter 224 in sequence, and then is transmitted to the outside of the optical carrier 21, and then enters the total reflection coupling module 3.
[0057] The divergent light beam emitted backward by the eighth laser chip is directly received and detected by the eighth light detector at its rear end. The divergent light beam emitted forward by the eighth laser chip is collimated by the eighth collimating lens to become a collimated light beam, and is transmitted into the optical carrier 21 to refract the light and then enter the second total reflection mirror 232, undergo the first total reflection by the second total reflection mirror 232, and then is transmitted to the sixth filter 226 and undergoes the second total reflection, and then is transmitted to the second total reflection mirror 232 and undergoes the third total reflection, and then is transmitted to the fifth filter 225 and undergoes the fourth total reflection, and then is transmitted to the second total reflection mirror 232 again and undergoes the fifth total reflection, and then is transmitted to the fifth filter 225 and undergoes the sixth total reflection, and then is transmitted to the outside of the optical carrier 21, and then enters the total reflection coupling module 3, and after being totally reflected by the reflection surface of the total reflection coupling module 3, the collimated light beam is finally converged by the coupling lens 32 in the total reflection coupling module 3, and is coupled into the optical fiber module 4 for transmission.
[0058] In one embodiment, reference Figure 6 The optical transmitter also includes a refrigerator 5 and a heat-conducting base plate 6 , and the refrigerator 5 , the transmitting module 1 , the optical path adjustment module 2 , the total reflection coupling module 3 and the optical fiber module 4 are all arranged on the heat-conducting base plate 6 .
[0059] Specifically, refer to Figure 6 By assembling all the optical devices onto the heat-conducting base plate 6, it is convenient to control the assembly position / assembly tolerance to ensure or improve the assembly accuracy of each optical device; the refrigerator 5 is used for temperature control so that multiple optical elements such as laser chips 111 are always kept under the set stable working conditions to improve the stability of the overall device.
[0060] In one embodiment, reference Figure 6 The optical transmitter further comprises a housing 7 for packaging, one end of the housing 7 is provided with a power pin 71 , and the other end of the housing 7 is provided with a through hole 72 for avoiding the optical fiber 41 .
[0061] Specifically, refer to Figure 6The power pin 71 is used to connect to an external power source for powering on; the through hole 72 is used to avoid the optical fiber 41. After the optical fiber 41 in the optical fiber module 4 passes through the through hole 72, glue can be used to fill the gap between the optical fiber 41 and the through hole 72 to fix the optical fiber 41.
[0062] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.
Claims
1. A light transmitter, characterized in that: It includes a transmitting module, an optical path adjustment module, a total reflection coupling module and an optical fiber module; the optical fiber module includes an optical fiber and a core assembly, and the optical fiber is connected to the core assembly; the transmitting module includes a plurality of transmitting assemblies for transmitting multiple light beams of different wavelengths; After the optical path is adjusted by the optical path adjustment module, the multiple light beams enter the total reflection coupling module, and are converged by the total reflection coupling module and coupled into the optical fiber to transmit the optical signal.
2. The optical transmitter according to claim 1, characterized in that The emission component comprises a laser chip, a collimating lens, a chip carrier and a light detector. The laser chip is arranged on the chip carrier, the collimating lens is arranged on the light emitting surface of the laser chip, and the light detector is arranged on the backlight surface of the laser chip.
3. The optical transmitter according to claim 1, characterized in that The optical path adjustment module includes an optical carrier, at least one filter and at least one total reflection mirror, wherein the filter and the total reflection mirror are both pasted on the optical carrier, and the light beam incident on the optical path adjustment module is refracted by the optical carrier, or is transmitted through the filter and then incident on the total reflection mirror, and then reflected by the total reflection mirror and the filter and then incident on the total reflection coupling module.
4. The optical transmitter according to claim 3, characterized in that The filter is bonded to a side of the optical carrier facing the emission module, and the total reflection mirror is bonded to a side of the optical carrier facing the total reflection coupling module.
5. The optical transmitter according to claim 4, characterized in that A total reflection film is coated on one side of the filter for bonding with the optical carrier, and a filtering film is coated on one side of the filter facing the emission module.
6. The optical transmitter according to claim 4, characterized in that A total reflection film is coated on one side of the total reflection mirror for bonding with the optical carrier.
7. The optical transmitter according to claim 1, characterized in that The total reflection coupling module includes at least one total reflection surface and at least one coupling lens. The light beam incident into the total reflection coupling module is totally reflected by the total reflection surface to the coupling lens, and is coupled to the optical fiber module through the coupling lens.
8. The optical transmitter according to claim 3, characterized in that The transmitting module includes 8 transmitting components, the optical path adjustment module includes 6 filters and 2 total reflection mirrors, the optical carrier is V-shaped, and 3 filters are respectively arranged on the two concave surfaces of the optical carrier, and 1 total reflection mirror is respectively arranged on the two outer surfaces of the optical carrier.
9. The optical transmitter according to any one of claims 1 to 8, characterized in that: It also includes a refrigerator and a heat-conducting base plate, and the refrigerator, the transmitting module, the optical path adjustment module, the total reflection coupling module and the optical fiber module are all arranged on the heat-conducting base plate.
10. The optical transmitter according to claim 9, characterized in that The invention also comprises a shell for packaging, wherein one end of the shell is provided with a power-on pin, and the other end of the shell is provided with a through hole for avoiding the optical fiber.