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    • 1. 发明公开
    • SEMICONDUCTOR OPTICAL DEVICE, SEMICONDUCTOR LASER USING THE SEMICONDUCTOR OPTICAL DEVICE, AND OPTICAL TRANSPONDER USING THE SEMICONDUCTOR LASER
    • 光学半导体器件,具有光学半导体器件和光学收发器,应用半导体激光器半导体激光器
    • EP2091118A1
    • 2009-08-19
    • EP07829435.2
    • 2007-10-09
    • Anritsu Corporation
    • MORI, Hiroshi
    • H01S5/12
    • B82Y20/00H01S5/0261H01S5/0612H01S5/06256H01S5/06258H01S5/1064H01S5/1209H01S5/1212H01S5/1215H01S5/1231H01S5/124H01S5/1243H01S5/227H01S5/34306
    • In order to realize transition from a non-reflective state to a state in which only a light with a target wavelength can be reflected with a high wavelength selectivity, a semiconductor optical element includes an n-type substrate, an n-type clad layer formed in a part of the n-type substrate itself or upward of the n-type substrate, a p-type clad layer formed upward of the n-type substrate, a guide layer, formed between the p-type clad layer and the n-type clad layer, for waveguiding a light, first and second electrodes respectively formed on the bottom surface of the n-type substrate and the upper surface of the p-type clad layer, and a plurality of electric current regulating members provided in the vicinity of the guide layer and regularly arranged along a light waveguide direction in the guide layer. The plurality of electric current regulating members show a refractive index approximately the same as a surrounding object, provide an even electric current density distribution in the guide layer along the light waveguide direction in the guide layer in a state in which the electric current has been injected in between the first and second electrodes, and generate an even distribution of the refractive index in the guide layer along the light waveguide direction in the guide layer based on the even electric current density distribution. Thereby, the guide layer reflects a light with a wavelength, which is determined in accordance with the even refractive index distribution, of the incident lights.
    • 为了实现从非反射状态,其中仅与目标波长的光能够以高的波长选择性反射的状态转变中,半导体光学元件包括一个n型基片,n型覆盖层上形成 在n型基片本身或向上的n型基板中的一个组成部分,一个p型包层形成向上的n型基板,导向层,所述p型覆层和n-之间形成 型包层,用于波导光,第一和第二电极分别形成在n型衬底的底表面和p型覆层的上表面上,并在其附近提供电流调节部件的上的多个 导层和沿着在导层的光的波导方向规则地布置。 电流调节部件的多元性显示的折射率大致相同的周围物体,提供即使在引导层沿所述电流已被注入的状态下的导层的光的波导方向的电流密度分布 在第一和第二电极之间,以及产生的折射率的沿基于所述甚至电动电流密度分布导层的光的波导方向的导层均匀分布。 由此,引导层反射具有一个波长的光,所有这些是确定性的开采在雅舞蹈与偶数折射率分布,入射光的。
    • 6. 发明公开
    • Wavelength-selective distributed Bragg reflector device
    • Wellenlängenselektiveverteilte Bragg Reflektor Vorrichtung
    • EP1391756A1
    • 2004-02-25
    • EP02255800.1
    • 2002-08-20
    • Agilent Technologies, Inc. - a Delaware corporation -
    • Charles, PaulPaoletti, RobertoAgresti, MicheleVallone, Marco
    • G02B6/12H01S5/0625
    • G02B6/12007G02B6/124H01S5/026H01S5/06256H01S5/1032H01S5/1243H01S5/141H01S5/4068
    • The present invention relates to a wavelength-selective distributed Bragg reflector (DBR) device (5) which may be used in wavelength-selective optoelectronic devices (1) such as a tuneable semiconductor laser device or a tuneable wavelength-selective receiver. The device (1) comprises a semiconductor substrate and a plurality of semiconductor layers deposited upon the substrate that form a plurality of adjacent distributed Bragg reflector (DBR) components (5A-D). Each DBR component (5A-D) has: an elongate optical waveguide (11A-D) for carrying optical radiation (27), each waveguide (11A-D) being spaced laterally from adjacent waveguides with respect to the length of each waveguide (11A-D); and a DBR grating for selecting the wavelength (λ A-D ) of the optical radiation (27) carried by the waveguide (11A-D), the grating having along the length of the waveguide a grating pattern (38) of alternating strips of varying refractive index, each strip extending at a transverse angle (β) to the length of the waveguide (11A-D), and the strips of each grating pattern (38) being aligned with corresponding strips in each adjacent component. The strips of the DBR components (5A-D) extend at different transverse angles (β A-D ) to corresponding strips in other DBR components (5A-D) so that the DBR gratings of different DBR components (5A-D) select different wavelengths (λ A-D ).
    • 本发明涉及可用于诸如可调谐半导体激光器件或可调波长选择接收器的波长选择性光电子器件(1)中的波长选择分布布拉格反射器(DBR)器件(5)。 器件(1)包括半导体衬底和沉积在衬底上的多个半导体层,其形成多个相邻的分布布拉格反射器(DBR)组件(5A-D)。 每个DBR组件(5A-D)具有:用于承载光辐射(27)的细长光波导(11A-D),每个波导(11A-D)相对于每个波导(11A)的长度与相邻波导横向隔开 -D); 以及用于选择由波导(11A-D)携带的光辐射(27)的波长(λAD)的DBR光栅,所述光栅沿着波导的长度具有交替变化的折射条带的光栅图案(38) 每个条带以与波导(11A-D)的长度成横向角度(β)延伸,并且每个格栅图案(38)的条带与每个相邻部件中的相应条带对准。 DBR组件(5A-D)的条带以不同的横向角度(βAD)延伸到其他DBR组件(5A-D)中的相应条带,使得不同DBR组件(5A-D)的DBR光栅选择不同的波长( lambda AD)。
    • 10. 发明公开
    • Sub-carrier multiplexing in broadband optical networks
    • 多重信号在无线网络中的应用Breitbandnetze
    • EP0910138A1
    • 1999-04-21
    • EP98308347.8
    • 1998-10-13
    • LUCENT TECHNOLOGIES INC.
    • Adams, Laura EllenBethea, Clyde GeorgeNykolak, GeraldPeople, RooseveltTanbun-Ek, Tawee
    • H01S3/025H01S3/103H04J7/00H04J14/02
    • H04J14/0298H01S5/0265H01S5/06258H01S5/1243H04J7/00
    • In a WDM fiber-optic network, a unique laser transmitter enables signals to be routed at three hierarchical levels: at one level discrimination among signal paths is based on N WDM wavelength channels, at another level discrimination is based on m AM subcarrier frequency channels, and at a third level discrimination is based on n FM subcarrier frequency channels. Thus, a total of Nmn distinguishable optical channels can be accommodated and a like number of users served. The laser transmitter comprises a broadband, tunable semiconductor laser which includes an intracavity, integrated composite reflector to which a tuning voltage and a FM dither signal are applied, an intracavity gain section to which drive current is applied, and an extracavity, integrated electroabsorption modulator to which an information (e.g., data, voice, video) signal and an AM dither signal are applied. The tuning voltage provides coarse wavelength tuning among N WDM channels, whereas the FM dither signal produces an additional m channels via FM-SCM. The AM dither likewise produces an additional n channels via AM-SCM.
    • 在WDM光纤网络中,独特的激光发射机使信号能够以三个层次的级别路由:在一个级别,信号路径之间的鉴别基于N个WDM波长信道,在另一个级别,基于m个AM子载波频率信道, 并且在第三级别,鉴别是基于n个FM子载波频率信道。 因此,可以容纳总共Nmn个可辨别的光通道并且服务相同数量的用户。 激光发射机包括宽带可调谐半导体激光器,其包括施加调谐电压和FM抖动信号的腔内集成复合反射器,施加驱动电流的腔内增益部分,以及腔外集成电吸收调制器 其中应用信息(例如,数据,语音,视频)信号和AM抖动信号。 调谐电压在N个WDM通道中提供粗略的波长调谐,而FM抖动信号通过FM-SCM产生额外的m个通道。 AM抖动同样通过AM-SCM产生另外的n个通道。