CN1301419C - Multi-laser beam combining apparatus - Google Patents

Multi-laser beam combining apparatus Download PDF

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CN1301419C
CN1301419C CN 200410026552 CN200410026552A CN1301419C CN 1301419 C CN1301419 C CN 1301419C CN 200410026552 CN200410026552 CN 200410026552 CN 200410026552 A CN200410026552 A CN 200410026552A CN 1301419 C CN1301419 C CN 1301419C
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diaphragm
wavelength
beam
laser
λ3
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CN 200410026552
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CN1673804A (en )
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范文明
李屹
谢红
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昂纳信息技术(深圳)有限公司
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Abstract

本发明多激光光束复合器包括多个激光器,至少三个膜片以及一接收器,其中激光器发射的光束λ Multiple laser beam multiplexer comprises a plurality of lasers of the present invention, the at least three receivers and a diaphragm, wherein the light beam emitted by the laser λ

Description

多激光光束复合装置 Multi-beam laser apparatus compound

技术领域 FIELD

本发明是涉及一种光通讯的元器件,特别涉及将多个激光器产生的光束进行复合的装置。 The present invention relates to an optical communication components, particularly to a composite beam device generated by a plurality of lasers.

背景技术 Background technique

随着光通讯技术领域的需求,多激光光束的复合装置可将多个激光器发射的光束复合在一起而进行传输,该复合器不只是单纯的将激光器发射的光束复合,该复合器在复合光束的同时,需保持各激光器产生的光束在传输过程中各波长之间具有一致的光功率。 As the demand for optical communication art, the composite device may be a multi-laser beam emitted by the laser beam a plurality of composite together for transmission, which is not merely a composite of the laser beam emitted from the composite, the composite beam in a composite at the same time, the need to maintain each of the laser beams generated in the transmission process has a uniform optical power between the wavelengths.

而现有技术通常通过玻璃模块和镀膜来实现传输和保持其均匀光功率的要求,图1为现有技术四激光器光束复合装置的原理图,如图1所示,该四激光器光束的复合装置100包括激光器11、12、13及14,一棱镜20,以及接收器18。 Whereas the prior art is typically achieved by coating glass module and maintains its uniform light transmission and power requirements, FIG. 1 is a schematic diagram of a prior art four composite laser beam apparatus, shown in Figure 1, the composite apparatus which four laser beams 12, 13 and 100 includes a laser 14, a prism 20, and a receiver 18. 其中棱镜20在其边缘贴有膜片(滤光片)21、22、23,激光器11发射λ1的光束L1借由棱镜20的膜片23反射进入接收器18;激光器12发射波长为λ2的光束L2穿过棱镜20的膜片22进入棱镜20中,再借由膜片21反射穿过膜片23,由接收器18接收;激光器13发射的波长为λ3的光束L3进入棱镜20,借由膜片22、21反射,透过膜层23,由接收器18接收;当激光器14发射的波长为λ4的光束L4进入棱镜20,穿过膜片21、23,由接收器18接收;这样可知膜片22所需具有的性能为透射波长为λ2的光束L2,反射波长为λ3的光束L3;膜片21所需具有的性能为透射波长为λ4的光束L4,反射波长为λ2的光束L2和λ3的光束L3;膜片23所需具有的性能为反射波长为λ1的光束L1,透射波长为λ2、λ3、λ4的光束L2、L3、L4。 Wherein the prism 20 with a membrane (filter) 21, 22 at its edges, the laser 11 emits the light beam L1 λ1 is reflected by the prism 23 by the diaphragm 20 into the receiver 18; 12 emitting a laser beam having a wavelength λ2 L2 passes through the diaphragm 22 enters the prism 20 of prism 20, then reflected by means of the diaphragm 21 through the diaphragm 23, received by the receiver 18; 13 emitted laser wavelength λ3 of light beam L3 enters the prism 20, by means of a film the reflective sheet 22, 21, 23, received by the receiver 18 through the film layer; when the wavelength of the laser 14 emitted light beam L4 λ4 enters the prism 20, passes through the membrane 21, 23, 18 received by the receiver; this apparent film 22 having the desired properties for the sheet to the transmission wavelength [lambda] 2 of the beam L2, the reflected light beam L3 λ3 wavelength; a diaphragm 21 having the desired properties of the transmission wavelength of a light beam L4 λ4, wavelength [lambda] 2 of the reflected light beam L2 and [lambda] 3 the light beam L3; diaphragm 23 having the desired properties of the reflected light beam L1 λ1 wavelength, the transmission wavelength [lambda] 2, light beam L2 λ3, λ4 of, L3, L4.

上述结构的四激光器光束复合装置的理想状态为:当空气中光束入射角为45°入射时,在胶合面(膜层)的入射角为28.13°(即为膜片21、22、23均以28.13为入射角设计参数),对λ1、λ2、λ3、λ4进行分光。 Configuration over the state of the composite beam apparatus as four lasers: when the air in the incident angle of 45 ° is incident, an incident angle in the cementing surface (layer) of 28.13 ° (that is, the diaphragm 21, 22 are 28.13 design parameter for the angle of incidence) of λ1, λ2, λ3, λ4 disperses. 由于装配的误差和棱镜20本身的平行度的误差都会导致膜片入射角发生了改变,当入射角度变大,波长向短飘移;当入射角度变小,波长向长漂移,这样使得膜片21、22、23的光谱曲线漂移,下面以膜片22为例具体说明光谱曲线漂移现象,当在正常入射角度28.13时,膜片22的光谱特性是反射λ3,透射λ2的光束,并且两束光L2,L3经过膜片22的透射或反射后都能达到膜片21。 Due to assembly errors and the prism 20 are parallel to itself, the error of the angle of incidence causes the diaphragm is changed, when the incident angle becomes large, the short wavelength drift; when the incident angle becomes smaller, the wavelength shift to the long, so that the diaphragm 21 , drift the spectral curve 22, 23, the diaphragm 22 as an example below to illustrate specific spectral curves drift, when in a normal incident angle of 28.13, the spectral reflection characteristics of the membrane 22 is [lambda] 3, the transmitted beam of λ2, and the two light beams L2, L3 after transmission or reflection of the diaphragm 22 can reach the diaphragm 21. 若入射角发生变化就会造成膜片22对λ2和λ3同时反射或透射,从而使光束L2,L3不能合成达到膜片21,或造成光能量的损失。 If the angle of incidence changes will cause the membrane 22 pairs λ2 and λ3 reflected or transmitted simultaneously, so that the beam L2, L3 can not be synthesized to achieve a diaphragm 21, or the loss of light energy. 图2为膜片22的光谱曲线图,如图2(a)所示,对于膜片22,需合成光束L2(1300nm)和L3(1325nm),由于L2(1300nm)和L3(1325nm)的波长相差很小,这样将光束L2(1300nm)和L3(1325nm)分开使膜片22的特征曲线较陡,而造成镀膜工艺难度加大;此外,又如图2(b)所示,当入射角变小1°时,光谱特征曲线大约移动10nm,这样,要求装配很高的装配精度和棱镜的加工精度。 FIG 2 is a graph showing the spectrum of the membrane 22, as shown in FIG 2 (a), for the diaphragm 22, to be combined beam L2 (1300nm) and L3 (1325nm), wavelength L2 (1300nm) and (1325nm) L3 because difference is small, so that the light beams L2 (1300nm) and L3 (1325nm) that the characteristic curve of the diaphragm 22 are separated steeper, and the resulting coating process more difficult; in addition, and as shown in FIG. 2 (B), when the angle of incidence when smaller 1 °, the spectral characteristic curve is shifted about 10 nm, this requires precision machining and assembly of high assembly precision of the prism.

这样上述方案存在的问题在于:1.膜层指标高,不利于制造而导致成本高。 Such a problem in that the above scheme: 1. High index film layer, is not conducive to high manufacturing costs result.

2.由于采用膜层胶合于棱镜上的方式,因而膜片对入射角度α敏感。 2. As a result of the film glued to the prism manner, and thus the diaphragm is sensitive to the incident angle α.

3.这样对棱镜精度要求高,这样棱镜的工和膜片胶合的封装比较困难。 3. Such a prism for high accuracy requirements, this prism and the diaphragm gluing work package difficult.

发明内容 SUMMARY

为了克服上述问题,本发明的目的在于提供一种成本低,对入射角不敏感,封装简单的多激光光束复合装置。 In order to overcome the above problems, an object of the present invention is to provide a low cost, is not sensitive to the incident angle, the laser beam simpler package a composite device.

为了达到如上目的,本发明多激光光束复合装置包括四个激光器,三个膜片以及一接收器,其中四个激光器依次产生不同波长的光束λ1、λ2、λ3、λ4,其中光束λ1、λ2、λ3、λ4波长大小依顺序排列,其中第一膜片透射第一激光器产生的波长为λ1光束而反射第三激光器产生的波长为λ3光束;第二膜片透射第四激光器产生的波长为λ4光束而反射第二激光器产生的波长为λ2光束;以及第三膜片对波长为λ1、λ2、λ3、λ4,的光束的反射率与透射率的比值为1∶1,及接收器接收波长为λ1、λ2、λ3、λ4的光束。 In order to achieve the above object, the present invention is a composite multi-beam laser comprises four laser apparatus, the diaphragm and a three receivers, wherein four laser beams are sequentially generated different wavelength lambda, λ2, λ3, λ4, wherein the light flux λ1, λ2, λ3, λ4 wavelengths are sized in sequence, wherein the first diaphragm of the transmission wavelength λ1 to the first laser light beam generated by the reflection wavelength [lambda] 3 of the third laser beam is generated; a second diaphragm transmission wavelength is [lambda] 4 of the fourth laser light beam generated reflecting the wavelength [lambda] 2 of the second laser beam is generated; and a third diaphragm a wavelength of λ1, λ2, the ratio of the reflectance and transmittance of the light beam λ3, λ4, is 1:1, and the receiver receives the wavelength lambda , λ2, λ3, λ4 of the beam.

由于本发明将波长值相差较大的激光通过膜片合在一起,由先前技术的四路变为两路,然后用以半透半反的第三膜片将两路光合在一起。 Since the value of the present invention to the wavelength of laser light by the large difference film together, the four prior art becomes two and a half to a third membrane will together two photosynthesis. 该结构,具有如下优点:1.降低了膜片的工艺难度,提高其膜片的制造成品率,从而降低了成本;2.膜片对光入射角度不敏感;3.这样膜片有利于器件的封装。 This structure has the following advantages: 1. a process for reducing the difficulty of the membrane, to improve the production yield of the diaphragm, thereby reducing the cost; second diaphragm insensitive to the incident angle of light; 3 membrane so allowing the device package.

附图说明 BRIEF DESCRIPTION

下面结合附图和实施例对本发明的结构和功效进一步说明。 Further explanation of the structure and efficacy of the invention in conjunction with the accompanying drawings and embodiments below.

图1为现有技术四激光光束复合装置的工作原理图。 Figure 1 is a schematic diagram of the prior art four working laser beam composite apparatus.

图2(a)、图2(b)为现有技术四激光光束复合装置的膜片22的光谱特征曲线图。 FIG 2 (a), FIG. 2 (b) composite spectral characteristic graph of a light beam prior art apparatus for four laser diaphragm 22.

图3为本发明多激光光束复合装置的一具体实施例的光路图。 An optical path view of an embodiment of the present invention. FIG. 3 composite multi-beam laser device.

图4(a)、图4(b)、图4(c)分别为本发明多激光光束的复合装置膜片15、16、17的光谱特征曲线图。 FIG. 4 (a), FIG. 4 (b), FIG. 4 (c) a composite film multi laser beam apparatus spectral characteristic curve of FIG. 16, 17, respectively, of the present invention.

图5为本发明多激光光束复合装置的膜片15,16的角度偏差与波长漂移示意图。 FIG sheet angle 15, 16 more than five composite apparatus of the present invention the laser beam with wavelength drift deviation Fig.

具体实施方式 detailed description

如图3所示,本发明多激光光束复合装置包括激光器11、12、13及14,膜片15、16、17,以及接收器18,其中激光器11发射λ1的光束L1穿过膜片15,再借由膜片17反射进入接收器18;激光器13发射波长为λ3的光束L3借由膜片15反射到达膜片17,再次借由该膜片17反射进入接收器18;激光器12发射的波长为λ2的光束L2借由膜片16反射进入膜片17,穿过所述膜片17进入接收器18接收;激光器14发射的波长为λ4的光束L4穿过膜片16、17,由接收器18接收。 3, the present invention is a composite multi-beam laser apparatus includes a laser 12, 13 and 14, the diaphragm 15, 16, 18 and a receiver, wherein the laser 11 emitted light beam L1 λ1 passes through the membrane 15, re-entering the receiver 18 by means of the reflection film 17; 13 emits laser beam L3 having a wavelength of λ3 is reflected by means of the film 15 reaches the diaphragm 17, the diaphragm 17 by means of re-reflected into the receiver 18; 12 emitted laser wavelength λ2 light beam L2 to enter the reflection film 16 by means of the diaphragm 17 through the diaphragm 17 enters the receiver 18 receives; wavelength laser 14 emitted light beam L4 λ4 passes through the membrane 16 and 17, by the receiver 18 reception.

图4(a)、图4(b)及图4(c)为本发明膜片15、16、17的光谱特征曲线,其中膜片15为λ1和λ3的透反膜,膜片16为λ2和λ4的S偏振态的透反膜,而膜片17为λ1、λ2、λ3、λ4的半透半反膜。 Spectral characteristic curve of the diaphragm 15, 16 of FIG. 4 (a), FIG. 4 (b) and FIG. 4 (c) of the present invention, wherein the diaphragm 15 is λ1 and λ3 of the transflective film, the diaphragm 16 λ2 and [lambda] 4 of the S polarization transflective film, and the diaphragm 17 as λ1, λ2, λ3, λ4 of the transflective film. 由于本发明膜片15、16对波长值相差较远的λ1、λ3及λ2、λ4进行分光,如图4(a)、图4(b)所示,该膜片15、16和先前技术相比具有比较平坦的光谱特征曲线,这样降低了镀膜工艺难度。 Since the diaphragm 15 and 16 of the present invention are far away the wavelength values ​​λ1, λ3 and λ2, λ4 disperses FIG. 4 (a), FIG. 4 (b), the 15, 16 and the diaphragm relative to the prior art characterized in having a relatively flat spectra curve, which reduces the difficulty of the coating process.

上述结构将两相隔通道的激光(光束L1和L3、L2和L4)合在一起,由四路转变成两路,然后再利用半透半反膜的第三膜片17将两路光合在一起。 The above-described laser structure of two spaced channels (beams L1 and L3, L2 and L4) together, changed from four to two, and then using the transflective film 17 of the third diaphragm together two photosynthesis .

图5为本发明多激光光束复合装置的膜片15,16的角度偏差与波长漂移示意图,如图5所示,入射角度偏差1°时,其波长仅漂移约5.6nm。 Figure 5 multiple laser device of the present invention, the composite membrane angular beam deviation and wavelength drift 15,16 schematic diagram shown in Figure 5, when the incident angle deviation of 1 °, a wavelength drift of only about 5.6nm.

如上实施例中,其各参数可以为:L1=1275.7nmL2=1300.2nmL3=1324.7nmL4=1349.2nm膜片15:1275/1325为S或P偏振的截止滤光片(与激光器11,12,13,14产生光束的偏振态相对应);膜片16:1300/1350为S或P偏振的截止滤光片(与激光器11,12,13,14产生光束的偏振态相对应);膜片17:Ts/Rs=1∶1截止波长为1260-1360nm。 In the above embodiments, each parameter may be: L1 = 1275.7nmL2 = 1300.2nmL3 = 1324.7nmL4 = 1349.2nm film 15: 1275/1325 S or P-polarized cut filter (11, 12 and the laser, generating a light beam 14 corresponding to the polarization state); diaphragm 16: 1300/1350 S or P-polarized cut filter (11,12,13,14 generating a light beam corresponding to the laser polarization state); the diaphragm 17: Ts / Rs = 1:1 cutoff wavelength 1260-1360nm.

由于本发明将波长相隔较大的激光通过同一膜片合在一起,由先前技术的四路变为两路,然后用以半透半反的第三膜片将光合在一起。 Since the present invention is a wavelength separated laser beam through the same large diaphragm together by four prior art becomes two and a half to a third of the diaphragm photosynthesis together. 该结构,具有如下优点:1.膜片15、16和先前技术相比过渡带具有比较平坦的光谱特征曲线,这样降低了镀膜工艺难度,从而提高其膜片15、16的制造成品率的同时降低其成本;2.膜片15、16、17对入射角度不敏感;3.这样膜片15、16、17有利于器件的封装。 While a diaphragm 15, 16 and the transition zone of the prior art having a relatively flat spectral characteristic curve compared, which reduces the difficulty of the coating process, thereby improving the manufacturing yield thereof membrane 15, 16: the structure, has the following advantages. reduce costs; 2. diaphragm insensitive to angle of incidence 16, 17; 3, 16, 17 so that the diaphragm favor of the packaged device.

以上所述者,仅为本发明最佳实施例而已,并非用于限制本发明的范围,凡依本发明申请专利范围所作的等效变化或修饰,皆为本发明所涵盖。 The above are merely preferred embodiments of the present invention and not intended to limit the scope of the invention, where the application under this invention, equivalent variations or modifications made in the scope of patent, are all encompassed by the present invention.

Claims (2)

  1. 1.一多激光光束复合装置包括四个激光器、三个膜片以及一接收器,其中多个激光器依次产生不同波长的光束λ1、λ2、λ3、λ4,其中光束λ1、λ2、λ3、λ4波长大小依顺序排列;其中第一膜片透射波长为λ1光束而反射波长为λ3光束;第二膜片透射波长为λ4光束而反射波长为λ2光束,以及第三膜片对波长为λ1、λ2、λ3、λ4的光束的透射率与反射率的比值为1∶1;及接收器接收波长为λ1、λ2、λ3、λ4的光束。 1. A multiple laser beam composite apparatus comprises four lasers, three diaphragm and a receiver, wherein the plurality of laser beams are sequentially generated different wavelength lambda, λ2, λ3, λ4, wherein the light flux λ1, λ2, λ3, λ4 wavelength size arranged in sequence; wherein the first diaphragm is the transmission wavelength lambda light beam reflected beam wavelength λ3; second diaphragm transmission wavelength λ4 beam wavelength [lambda] 2 reflected beam, and the third diaphragm a wavelength of λ1, λ2, λ3, the ratio of the transmittance and reflectance of light [lambda] 4 is 1:1; and a receiver for receiving the wavelength λ1, λ2, beam λ3, λ4 of.
  2. 2.如权利要求1所述的多激光光束复合装置,其特征在于,所述第一膜片,第二膜片可以为S或P偏振态的截止膜片。 2. The multi-laser beam according to claim 1 a composite device, characterized in that said first diaphragm, the second diaphragm may be a diaphragm off the S or P polarization state.
CN 200410026552 2004-03-22 2004-03-22 Multi-laser beam combining apparatus CN1301419C (en)

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CN101369717B (en) 2008-09-25 2010-06-23 中国科学院长春光学精密机械与物理研究所 Multi-light beam coupling high power semiconductor laser unit

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CN103293694A (en) * 2013-04-22 2013-09-11 中国科学院半导体研究所 Multiple semiconductor laser beam combining system

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US6404550B1 (en) * 1996-07-25 2002-06-11 Seiko Epson Corporation Optical element suitable for projection display apparatus

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US6404550B1 (en) * 1996-07-25 2002-06-11 Seiko Epson Corporation Optical element suitable for projection display apparatus
US6242140B1 (en) * 1997-05-23 2001-06-05 Samsung Sdi Co., Ltd. Method for manufacturing color filter

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101369717B (en) 2008-09-25 2010-06-23 中国科学院长春光学精密机械与物理研究所 Multi-light beam coupling high power semiconductor laser unit

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