CN210469321U

CN210469321U - Single-fiber three-dimensional broadband light source component

Info

Publication number: CN210469321U
Application number: CN201922007019.XU
Authority: CN
Inventors: 高国祥; 肖爱长; 谢艺力
Original assignee: Guangdong Ruigu Optical Network Communication Co ltd
Current assignee: Guangdong Ruigu Optical Network Communication Co ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-05-05
Anticipated expiration: 2029-11-19

Abstract

The utility model relates to a single fiber three-dimensional broadband light source subassembly that output power is high, including first passageway laser instrument, non-polarization WDM closes wave plate, second passageway laser instrument, third passageway laser instrument, PS multiplexer and optic fibre; the first channel laser and the optical fiber are mutually aligned and coaxially arranged, so that a main optical path is formed; the non-polarization WDM wave combining plate is positioned in the main optical path and inclines towards the direction of the optical fiber; the PS wave combiner is positioned between the unpolarized WDM wave combining sheet and the optical fiber in the main optical path and inclines towards the direction of the first channel laser; the second channel laser is positioned at the side of the main light path, the light-emitting light path of the second channel laser is vertically intersected with the main light path, and the light-emitting ends of the first channel laser and the second channel laser respectively face the mirror surfaces at the two sides of the unpolarized WDM wave-combining plate; the third channel laser is positioned at the other side of the main optical path, the light-emitting optical path of the third channel laser is vertically intersected with the main optical path, and the light-emitting end of the third channel laser and the inclined surface APC end of the optical fiber face the same side mirror surface of the PS wave combiner together.

Description

Single-fiber three-dimensional broadband light source component

Technical Field

The utility model relates to an optical communication field especially relates to a single fiber three-dimensional broadband light source subassembly.

Background

The wide spectral range light source module is an Amplified Spontaneous Emission (ASE) light source widely used for distributed fiber grating sensing systems, optical passive device testing and spectral analysis design, and the basic principle of the module is that C-band (1528-.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a weak point among the improvement prior art, and provide a single fiber three-dimensional broadband light source subassembly that output is high.

To this end, a single-fiber three-way broadband light source component is provided, which comprises a first channel laser (110), a non-polarization WDM wave-combining plate (130), a second channel laser (140), a third channel laser (150), a PS wave-combiner (160) and an optical fiber (170); the light-emitting end of the first channel laser (110) and the inclined surface APC end of the optical fiber (170) are mutually aligned and coaxially arranged, so that a main light path from the first channel laser (110) to the optical fiber (170) is formed; the non-polarization WDM wave plate (130) is positioned in the main optical path and inclines towards the direction of the optical fiber (170) with the incident angle of 43-47 degrees; the PS wave combiner (160) is positioned between the unpolarized WDM wave combining sheet (130) in the main optical path and the optical fiber (170), and inclines towards the direction of the first channel laser (110) with the incident angle of 43-47 degrees; the second channel laser (140) is positioned at the side of the main light path, the light-emitting light path of the second channel laser (140) is vertically crossed with the main light path, and the light-emitting ends of the first channel laser (110) and the second channel laser (140) respectively face the mirror surfaces at the two sides of the non-polarization WDM wave-combining plate (130); the third channel laser (150) is positioned at the other side of the main optical path, the light-emitting optical path of the third channel laser (150) is vertically intersected with the main optical path, and the light-emitting end of the third channel laser (150) and the inclined surface APC end of the optical fiber (170) face the same side mirror surface of the PS wave combiner (160) together.

Further, the transmission angle of the non-polarizing WDM wave combiner and/or PS wave combiner (160) is specifically 45 °.

Further, the laser device further comprises a body base (120), and one or more of the light outlet end of the first channel laser (110), the light outlet end of the second channel laser (140), the light outlet end of the third channel laser (150), and the inclined surface APC end of the optical fiber (170) are positioned in the body base (120).

Further, the unpolarized WDM combiner plate (130) is in particular a WDM filter.

Further, the PS combiner (160) is specifically a polarization combiner.

Furthermore, the wide spectrum light emitted by the first channel laser (110), the second channel laser (140) and the third channel laser (150) is lambda 1-lambda 3 respectively, the wide spectrum light lambda 1 is connected with or partially overlapped with the head-to-tail wavelength of the wide spectrum light lambda 2, and the wide spectrum light lambda 2 is connected with or partially overlapped with the head-to-tail wavelength of the wide spectrum light lambda 3.

Has the advantages that:

the utility model discloses utilize polarization to close the no wavelength selection characteristic of ripples, adjacent wave band that can't directly close the ripples is spaced apart, for WDM closes the ripples and strives for middle design transition zone, finally realized that continuous multistage broadband wavelength links up to close the ripples and become wideer wide spectrum light and export, and because of each section broadband wavelength exports by the laser instrument, compare with prior art, the wide spectrum luminous power that finally closes the ripples and generate can reach higher for the light source subassembly range of application is broader.

The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 shows a schematic structural diagram of a single-fiber three-way broadband light source assembly of the present invention;

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

As shown in fig. 1, the single-fiber three-way broadband light source assembly of this embodiment includes a first channel laser 110, a body base 120, an unpolarized WDM wave combiner 130, a second channel laser 140, a third channel laser 150, a PS wave combiner 160, and an optical fiber 170.

The light exit end of the first channel laser 110 and the angled APC end of the optical fiber 170 are both located in the body base 120, and are aligned and coaxially disposed with each other, thereby forming a main optical path from the first channel laser 110 to the optical fiber 170.

The unpolarized WDM combiner 130 is specifically a WDM optical filter, which is located in the main optical path and is tilted toward the optical fiber 170 at an incident angle of 45 ° +/-2 °.

The PS combiner 160 is specifically a polarization combiner, which is also disposed in the main optical path and located between the unpolarized WDM combiner 130 and the optical fiber 170. The PS combiner 160 is tilted at an angle of incidence of 45 +/-2 towards the first channel laser 110.

The second channel laser 140 is located beside the main light path, and the light emitting end thereof is embedded in the body base 120 and the light emitting light path is vertically intersected with the main light path. The light-emitting ends of the first channel laser 110 and the second channel laser 140 face the two side mirrors of the unpolarized WDM wave plate 130, respectively.

The third channel laser 150 is located at the other side of the main optical path, and similarly, the light emitting end thereof is embedded in the body base 120 and the light emitting optical path is vertically intersected with the main optical path. The light-exiting end of the third channel laser 150 and the beveled APC end of the optical fiber 170 face the same mirror surface of the PS combiner 160.

The first channel laser 110, the second channel laser 140 and the third channel laser 150 respectively emit broad spectrum light lambda 1-lambda 3 capable of covering respective wave bands, wherein the broad spectrum light lambda 1 is connected with or partially overlapped with the head-to-tail wavelength of the broad spectrum light lambda 2, the broad spectrum light lambda 2 is connected with or partially overlapped with the head-to-tail wavelength of the broad spectrum light lambda 3, for example, the output wave band of the first channel laser 110 is 1524-1540 nm, the output wave band of the second channel laser 140 is 1540-1556 nm, and the output wave band of the third channel laser 150 is 1556-1572 nm.

When the polarization state multiplexing device is used, after the wide spectrum light lambda 1 and the wide spectrum light lambda 3 are multiplexed by the non-polarization WDM multiplexer plate 130, the polarization state P of the original LD is maintained to be unchanged, the polarization state P reaches the PS multiplexer 160, the polarization state P is multiplexed with S polarization state signal light emitted by the wide spectrum light lambda 2 with the polarization state direction rotated by 90 degrees, and finally the S polarization state signal light and the S polarization state signal light are all coupled into the optical fiber 170 to complete signal output.

The optical path transmission process utilizes the wavelength-free selection characteristic of polarization wave combination to separate adjacent wave bands which cannot be directly combined, a middle design transition band is obtained for WDM wave combination, and finally continuous multi-section broadband wavelength is connected and combined into wider wide-spectrum light to be output.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the protection scope of the present application, and although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present application without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A single-fiber three-dimensional broadband light source subassembly which characterized in that:

the device comprises a first channel laser (110), a non-polarization WDM wave-combining plate (130), a second channel laser (140), a third channel laser (150), a PS wave-combining device (160) and an optical fiber (170);

the light-emitting end of the first channel laser (110) and the inclined surface APC end of the optical fiber (170) are mutually aligned and coaxially arranged, so that a main light path from the first channel laser (110) to the optical fiber (170) is formed;

the non-polarization WDM wave plate (130) is positioned in the main optical path and inclines towards the direction of the optical fiber (170) with the incident angle of 43-47 degrees;

the PS wave combiner (160) is positioned between the unpolarized WDM wave combining sheet (130) in the main optical path and the optical fiber (170), and inclines towards the direction of the first channel laser (110) with the incident angle of 43-47 degrees;

the second channel laser (140) is positioned at the side of the main light path, the light-emitting light path of the second channel laser (140) is vertically crossed with the main light path, and the light-emitting ends of the first channel laser (110) and the second channel laser (140) respectively face the mirror surfaces at the two sides of the non-polarization WDM wave-combining plate (130);

the third channel laser (150) is positioned at the other side of the main optical path, the light-emitting optical path of the third channel laser (150) is vertically intersected with the main optical path, and the light-emitting end of the third channel laser (150) and the inclined surface APC end of the optical fiber (170) face the same side mirror surface of the PS wave combiner (160) together.

2. The triplex broadband light source assembly of claim 1, wherein: the transmission angle of the unpolarized WDM combiner plate and/or the PS combiner (160) is in particular 45 °.

3. The triplex broadband light source assembly of claim 1, wherein: the laser device further comprises a body base (120), and one or more of the light outlet end of the first channel laser (110), the light outlet end of the second channel laser (140), the light outlet end of the third channel laser (150) and the inclined surface APC end of the optical fiber (170) are located in the body base (120).

4. The triplex broadband light source assembly of claim 1, wherein: the unpolarized WDM combiner plate (130) is in particular a WDM optical filter.

5. The triplex broadband light source assembly of claim 1, wherein: the PS combiner (160) is specifically a polarization combiner.

6. The triplex broadband light source assembly of claim 1, wherein: the wide-spectrum light emitted by the first channel laser (110), the second channel laser (140) and the third channel laser (150) is lambda 1-lambda 3 respectively, the wide-spectrum light lambda 1 is connected with or partially overlapped with the head-tail wavelength of the wide-spectrum light lambda 2, and the wide-spectrum light lambda 2 is connected with or partially overlapped with the head-tail wavelength of the wide-spectrum light lambda 3.