CN210982823U - Multichannel parallel light emitting device - Google Patents

Abstract

The utility model relates to a light emission device technical field provides a parallel light emission device of multichannel very much, including a plurality of parallel light emission passageways and an optical interface, every light emission passageway includes light emission subassembly and single mode fibre core, and the light emission subassembly includes semiconductor laser chip, 1/4 wave plate and coupling lens, and the light that the semiconductor laser chip sent passes through 1/4 wave plate after, through coupling lens coupling to single mode fibre core, every single mode fibre core all with optical interface connection; the optical fiber connector further comprises an optical fiber support, wherein a plurality of optical fiber channels are formed in the optical fiber support, and optical fibers coming out of the single-mode fiber cores penetrate through the optical fiber channels and then are connected to the optical interface. The novel laser can effectively ensure the stability of the working state of the laser and reduce the noise of the system caused by reflected light; the aspheric coupling lens is used for reducing coupling loss, and the optical fiber support is adopted for accurately positioning the end face of the optical fiber, so that the coupling efficiency of an optical device is improved, and the optical communication quality is improved.

Description

Multichannel parallel light emitting device

Technical Field

The utility model relates to a light emission device technical field provides a parallel light emission device of multichannel very much.

Background

With the rapid increase in human demand for communication bandwidth, existing communication systems face both capacity and energy consumption challenges. In order to provide larger bandwidth with smaller space and lower power consumption, research and development on parallel optical devices are increasing. Parallel optics is where multiple lasers align multiple fibers in a single device-such as a 24-channel long-haul transceiver device suitable for high-speed parallel long-haul transmission applications, integrating 24 independent transmit channels, and connecting to a 24-channel ribbon fiber. Due to the low power consumption brought by the integration and miniaturization of the device, the heat generated and dissipated by the parallel optical device is greatly less than that of a plurality of discrete devices, and the reliability of the device and the whole system is improved.

However, the current parallel optical devices also have problems that cannot be ignored: firstly, after light is emitted, reflection is formed on the end face of a subsequent device, and the reflected light returns to the laser again to influence the working stability of the laser; in the transmission process of secondary light, certain coupling loss can be caused due to the fact that the optical fiber forms the bend of an optical path.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a parallel light emission device of multichannel.

The utility model discloses a realize like this, a parallel light emission device of multichannel, including a plurality of parallel light emission passageways and an optical interface, every light emission passageway includes light emission subassembly and single mode fibre core, and the light emission subassembly includes semiconductor laser chip, 1/4 wave plate and coupling lens, and the light that the semiconductor laser chip sent passes through after the 1/4 wave plate, through coupling lens coupling to single mode fibre core, every single mode fibre core all with optical interface connection;

the optical fiber connector further comprises an optical fiber support, the optical fiber support is arranged between the single-mode fiber core and the optical interface, a plurality of optical fiber channels are arranged on the optical fiber support, and optical fibers coming out of the single-mode fiber core are connected to the optical interface after penetrating through the optical fiber channels.

Furthermore, the optical fiber support is arranged between the single-mode fiber core and the optical interface through a detachable structure at the lower end, the optical fiber support is of a flexible insulation structure, an optical fiber inlet with a wide upper end and a narrow lower end is formed in the upper end of the optical fiber channel, and the width of the lower end of the optical fiber inlet is smaller than the diameter of the optical fiber.

Furthermore, the optical fiber support is circular, the detachable structure at the lower end of the optical fiber support is a sucker, and a sucker body of the sucker is connected to the edge of the bottom surface of the optical fiber support.

Furthermore, the optical fiber support is square, and the detachable structure at the lower end of the optical fiber support is a double-faced adhesive layer.

Further, the optical fiber support is fixedly arranged between the single-mode fiber core and the optical interface.

Furthermore, the bottom surface of the optical fiber channel in the optical fiber bracket is consistent with the height of the optical fiber connection part of the optical interface, and the ports at the two ends of the optical fiber channel are cambered surface ports.

Further, the coupling lens is an aspheric lens.

Furthermore, the semiconductor laser chip, the 1/4 wave plate and the coupling lens are sequentially attached to the heat sink base along a horizontal light path.

Further, 4 parallel light emission channels are provided, i.e. 4 groups of light emission modules are provided.

Compared with the prior art, the utility model has the advantages of:

1/4 wave plate is connected between the semiconductor laser chip and the coupling lens, which can effectively restrain the reflected light generated from the far end face of the optical fiber, the interface of the optical fiber connector and the like in the circuit from returning to the laser, thereby ensuring the stability of the working state of the laser, reducing the noise of the system caused by the reflected light and realizing the long-distance transmission of high-speed signals on the optical fiber; in order to improve the coupling efficiency of coupling the semiconductor laser chip to the single-mode optical fiber, the aspheric coupling lens is used for reducing the coupling loss, the optical fiber support is adopted for accurately positioning the optical fiber, the coupling efficiency of an optical device is improved, the optical communication quality is improved, and the arrangement mode of the optical fiber support is flexible and variable.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and embodiments:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the connection between a light emitting element and a single film core;

FIG. 3 is a diagram of a fiber optic shelf configuration according to one embodiment;

FIG. 4 is a block diagram of another embodiment of a fiber optic holder;

FIG. 5 is a cross-sectional view of a fiber channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 and 2, the utility model provides a parallel light emission device of multichannel, including a plurality of parallel light emission passageways and an optical interface 1, every light emission passageway includes light emission subassembly and single mode fibre core 2, and the light emission subassembly includes semiconductor laser chip 3, 1/4 wave plate 4 and coupling lens 5, and the light that semiconductor laser chip 3 sent is behind 1/4 wave plate 4, through coupling lens 5 coupling to single mode fibre core 2, every single mode fibre core 2 all is connected with optical interface 1; still include fiber support 6, fiber support 6 sets up single mode fibre core 2 with between the optical interface 1, fiber support 6 is last to have a plurality of fibre channels, and the optic fibre that comes out from single mode fibre core 2 passes fibre channel and connects on optical interface 1.

During operation, in every light emission channel in the light emitting device, the light that semiconductor laser chip 3 sent passes through behind 1/4 wave plate 4, rethread coupling lens 5 with the opto-coupler with to single mode fibre core 2 in, the transmission of light through single mode fibre core 2 reaches optical interface 1, passes through optical interface 1 again and transmits to other equipment. Since the 1/4 wave plate 4 is provided, reflected light generated from the optical fiber distal end face, the optical fiber connector interface, and the like does not return to the semiconductor laser chip 3, thereby reducing noise. In addition, due to the arrangement of the optical fiber support 6, on one hand, the optical fibers are folded through the optical fiber support 6, on the other hand, the optical fibers can be well positioned, and loss in the optical transmission process is reduced from the angle that the optical path is smooth.

Any light capable of isolating the reflected light can replace the 1/4 wave plate 4 in the novel model, such as an optical isolator.

In order to flexibly set the optical fiber support 6, the optical fiber support 6 can be taken down when the setting is not needed, as an improvement of the technical scheme, the optical fiber support 6 is arranged between the single-mode fiber core 2 and the optical interface 1 through a detachable structure at the lower end, the optical fiber support 6 is of a flexible insulation structure, an optical fiber inlet with a wide upper end and a narrow lower end is arranged at the upper end of an optical fiber channel, and the width of the lower end of the optical fiber inlet is smaller than the diameter of an optical fiber. When the fiber holder 6 is removed, the optical fiber is taken out from the fiber entrance.

Preferably, referring to fig. 3, the optical fiber support 6 is circular, the detachable structure at the lower end of the optical fiber support 6 is a suction cup 7, and a plate body of the suction cup 7 is connected to the edge of the bottom surface of the optical fiber support 6. When the optical fiber support 6 is not needed, the optical fiber support can be taken down through the sucking disc.

Preferably, referring to fig. 4, the optical fiber support 6 is square, and the detachable structure at the lower end of the optical fiber support 6 is a double-faced adhesive tape 8. The fiber support 6 can also be removed when it is not needed.

For light emitting devices where a fiber holder 6 has to be provided, the fiber holder 6 is fixedly arranged between the single mode core 2 and the optical interface 1.

In order to prevent the surface of the optical fiber from being damaged in the optical fiber channel, as an improvement of the technical solution, referring to fig. 5, the height of the bottom surface of the optical fiber channel in the optical fiber bracket 6 is consistent with the height of the optical fiber connection part of the optical interface 1, and the ports at the two ends of the optical fiber channel are cambered ports.

In order to reduce the coupling loss as much as possible, the coupling lens 5 is an aspherical lens as an improvement of the technical solution.

Preferably, the semiconductor laser chip 3 and the coupling lens 5 are sequentially attached to the heat sink base 9 along a horizontal optical path.

Preferably, 4 parallel light emission channels are provided, i.e. 4 groups of light emission assemblies are provided.

Claims (9)

1. The multichannel parallel light emitting device is characterized by comprising a plurality of parallel light emitting channels and an optical interface (1), wherein each light emitting channel comprises a light emitting assembly and a single-mode fiber core (2), the light emitting assembly comprises a semiconductor laser chip (3), an 1/4 wave plate (4) and a coupling lens (5), light emitted by the semiconductor laser chip (3) is coupled to the single-mode fiber core (2) through the coupling lens (5) after passing through a 1/4 wave plate (4), and each single-mode fiber core (2) is connected with the optical interface (1);

still include fiber support (6), fiber support (6) set up single mode fibre core (2) with between optical interface (1), there are a plurality of fibre channel on fiber support (6), connect on optical interface (1) after the optic fibre that comes out from single mode fibre core (2) passes fibre channel.

2. A multichannel parallel light emitting device according to claim 1, characterized in that the fiber holder (6) is arranged between the single-mode fiber core (2) and the optical interface (1) through a detachable structure at the lower end, the fiber holder (6) is a flexible insulating structure, the upper end of the fiber channel is provided with a fiber inlet which is wide at the top and narrow at the bottom, and the width of the lower end of the fiber inlet is smaller than the diameter of the fiber.

3. A multi-channel parallel light emitting device according to claim 2, wherein the optical fiber support (6) is circular, the detachable structure at the lower end of the optical fiber support (6) is a suction cup (7), and the body of the suction cup (7) is connected to the edge of the bottom surface of the optical fiber support (6).

4. A multi-channel parallel light emitting device according to claim 2, characterized in that the fiber support (6) is square and the detachable structure at the lower end of the fiber support (6) is a double-sided adhesive layer (8).

5. A multi-channel parallel light emitting device according to claim 1, characterized in that the fiber holder (6) is fixedly arranged between the single-mode fiber core (2) and the optical interface (1).

6. The device for emitting light of multiple parallel channels according to claim 3, 4 or 5, wherein the bottom surface of the optical fiber channel in the optical fiber support (6) is at the same height as the optical fiber connection position of the optical interface (1), and the ports at the two ends of the optical fiber channel are cambered ports.

7. A multi-channel parallel light emitting device according to claim 1, characterized in that the coupling lens (5) is an aspherical lens.

8. A multi-channel parallel light emitting device according to claim 1, wherein the semiconductor laser chip (3), the 1/4 wave plate (4) and the coupling lens (5) are attached to the heat sink base (9) in sequence along a horizontal light path.

9. A multi-channel parallel light emitting device as claimed in claim 1 wherein 4 parallel light emitting channels are provided, i.e. 4 groups of light emitting modules are provided.

Images