CN219997356U

CN219997356U - Long-distance light receiving device

Info

Publication number: CN219997356U
Application number: CN202321626871.5U
Authority: CN
Inventors: 孙月峰; 唐晓辉; 董珂
Original assignee: Sichuan Hualing Photon Technology Co ltd
Current assignee: Sichuan Hualing Photon Technology Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-11-10
Anticipated expiration: 2033-06-25

Abstract

The utility model discloses a long-distance light receiving device, which comprises a semiconductor optical amplifier SOA which is matched with external light in space, wherein an optical element Z-block which is used for carrying out wave combination and/or wave division on the received external light is arranged at the front end and the rear end of the SOA, and a lens I and a lens II which are used for shaping the light are respectively arranged at the front end and the rear end of the SOA; the optical fiber system comprises an SOA and a Z-block, wherein a photodiode MPD for detecting the amplified light of the SOA is arranged on one side of a transmission light path of the SOA and the Z-block, and the MPD is configured to be connected with a corresponding control module. The utility model provides a long-distance light receiving device, which is characterized in that an MPD (MPD) connected with a control module is arranged on a light receiving path, light after SOA (service oriented architecture) is detected through the MPD to determine power after SOA amplification, and the amplification factor of the SOA can be clearly known through conversion of the control module, so that whether the light is coupled to an optimal point can be rapidly and accurately judged, and the coupling efficiency is improved.

Description

Long-distance light receiving device

Technical Field

The present utility model relates to the field of optical transmission. More particularly, the present utility model relates to a long-distance light receiving device.

Background

At any time, the development of the Internet and the data center is carried out, the data flow to be transmitted is larger and larger, and the requirements on the transmission rate and the transmission distance of the optical module are higher and higher. In recent years, optical modules with 40km and 80km of long-distance transmission are increasingly applied, such as 100G ER4, 100G ZR4 optical modules, and the 100G ZR4 scheme is basically a scheme of Z block plus SOA plus PIN PD.

The common problems of the above schemes are:

firstly, after external light passes through an SOA, the amplification factor of each SOA is different at different temperatures, wavelengths and currents, so that the amplification of the external light passing through the SOA is more than that of the external light, and the light entering the PD is more than that of the external light, so that the knowledge of the amplification factor of the external light is difficult;

secondly, since the magnification of the SOA cannot be determined, in which case the optimal coupling point cannot be determined, the decoupling light is accumulated empirically in the prior art, so that the determination can be performed after multiple data collection tests, which is very troublesome to apply.

Disclosure of Invention

It is an object of the present utility model to address at least the above problems and/or disadvantages and to provide at least the advantages described below.

To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a long-distance receiving optical device including a semiconductor optical amplifier SOA spatially matched with external light, an optical element Z-block for combining and/or splitting the received external light, and lenses i and ii for shaping the light respectively provided at front and rear ends of the SOA;

the optical fiber laser comprises an SOA and a Z-block, wherein a photodiode MPD for detecting the amplified light of the SOA is arranged on one side of a transmission light path of the SOA and the Z-block, and the MPD is configured to be connected with a corresponding control module.

Preferably, a prism is arranged on the transmission light path of the SOA and the Z-block, and the prism is used for refracting most of the received light to the Z-block and reflecting a small part of the received light to the MPD.

Preferably, the light incident surface of the Z-block is provided with a turning prism;

wherein, the MPD corresponds to the upper end or the lower end of the turning prism in space.

Preferably, the turning prism is disposed at an upper end or a lower end of the Z-block.

Preferably, the turning prisms are closely attached to or spaced from the light incident surface of the Z-block by a predetermined distance.

The utility model at least comprises the following beneficial effects: according to the utility model, the MPD connected with the control module is arranged on the receiving light path, the MPD is used for detecting the light passing through the SOA so as to determine the amplified power passing through the SOA, and the amplification factor of the SOA can be clearly known through conversion of the control module, so that whether the coupling is to the optimal point or not can be rapidly and accurately judged, and the coupling efficiency is improved.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic layout of a long-distance receiving optical device according to an embodiment of the present utility model;

FIG. 2 is a schematic layout diagram after the adaptive adjustment of the base of FIG. 1;

FIG. 3 is a schematic layout of a long-distance receiving optical device according to another embodiment of the present utility model;

fig. 4 is a schematic layout diagram after the adaptive adjustment based on fig. 3.

Detailed Description

The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.

It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

It should be noted that, in the description of the present utility model, the orientation or positional relationship indicated by the term is based on the orientation or positional relationship shown in the drawings, which are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "I", "II" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "engaged/connected," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be an integral connection, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, may be a communication between two elements, and for one of ordinary skill in the art, the specific meaning of the terms in this disclosure may be understood in a specific case.

Example 1

The structure of the long-distance light receiving device is shown in fig. 1-2, and the long-distance light receiving device comprises a semiconductor optical amplifier SOA 1 which is matched with external light in space, an optical element Z-block 2 which is used for carrying out wave combination and/or wave division on the received external light, and a lens I3 and a lens II 4 which are used for shaping the light are respectively arranged at the front end and the rear end of the SOA;

the optical power amplifier comprises an SOA and a Z-block, wherein a photodiode MPD 5 for detecting the size of light amplified by the SOA is arranged on one side of a transmission optical path of the SOA and the Z-block, and the MPD is configured to be connected with a corresponding control module (not shown).

The working principle of the scheme is as follows: external light enters an SOA through a lens I, is amplified by the SOA and then is output to a light incident surface of the Z-block through a lens II;

a small part of light is reflected by the light incidence surface of the Z-block and enters the MPD, so that photoelectric conversion is carried out through the MPD and then the light is transmitted to the control module;

and the control module connected with the MPD calculates the size of the received light based on the received electric signal, and further obtains the size of the light amplified by the SOA.

Example 2

Embodiment 2, which is a preferred embodiment of the present utility model, has a specific structure as shown in fig. 1-2, and the following modifications are disclosed on the basis of embodiment 1:

the prism 6 for refracting most of the received light to the Z-block and reflecting the small part to the MPD is arranged on the transmission light path of the SOA and the Z-block, and in practical application, the light split into the MPD can be controlled by adjusting the spatial angle of the prism and the position of the MPD.

The technical scheme is characterized in that the prism is used for limiting light from the beam split to the MPD, and the beam split size and the beam split effect can meet the detection requirement.

Example 3

Embodiment 2, which is a preferred embodiment of the present utility model, has a specific structure as shown in fig. 3 to 4, and discloses the following modifications based on embodiment 1:

the light incident surface of the Z-block is provided with a turning prism 7;

the MPD is spatially corresponding to the upper end or the lower end of the turning prism, most of light can enter the Z-block after being refracted for many times through the turning prism through the design of the turning prism and the position of the turning prism, light receiving is completed, and the small part of light enters the MPD after being refracted for one time through the turning prism, so that detection of light amplification power is completed, and the MPD is an alternative scheme of the prism, and can be adaptively adjusted or selected as required when in application;

in practical application, the turning prism can be arranged at the upper end or the lower end of the Z-block according to the requirement of the internal structure layout, and can be clung to or arranged on the light incident surface of the Z-block at a preset distance so as to control the volume of a product, and naturally, after the position of the turning prism is changed, the position of the MPD in space is also adaptively adjusted.

The above is merely illustrative of a preferred embodiment, but is not limited thereto. In practicing the present utility model, appropriate substitutions and/or modifications may be made according to the needs of the user.

The number of equipment and the scale of processing described herein are intended to simplify the description of the present utility model. Applications, modifications and variations of the present utility model will be readily apparent to those skilled in the art.

Although embodiments of the utility model have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present utility model. Additional modifications will readily occur to those skilled in the art. Therefore, the utility model is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. The long-distance light receiving device comprises a semiconductor optical amplifier SOA which is matched with external light in space, and an optical element Z-block which is used for combining and/or dividing the received external light, and is characterized in that a lens I and a lens II which are used for shaping the light are respectively arranged at the front end and the rear end of the SOA;

2. The long-distance receiving optical device of claim 1, wherein a prism is disposed on the transmission paths of the SOA and the Z-block to refract a substantial portion of the light to the Z-block and reflect a small portion to the MPD.

3. The long-distance light receiving device according to claim 1, wherein the light incident surface of the Z-block is provided with turning prisms;

4. The long-distance light-receiving device according to claim 3, wherein the turning prism is provided at an upper end or a lower end of the Z-block.

5. The long-distance light receiving device according to claim 3, wherein the turning prisms are disposed on the light entrance surface of the Z-block closely or with a predetermined distance.