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    ELECTRO-ABSORPTION MODULATED LASER (EML) ASSEMBLY HAVING A 1/4 WAVELENGTH PHASE SHIFT LOCATED IN THE FORWARD PORTION OF THE DISTRIBUTED FEEDBACK (DFB) OF THE EML ASSEMBLY, AND A METHOD
    1.
    发明申请
    ELECTRO-ABSORPTION MODULATED LASER (EML) ASSEMBLY HAVING A 1/4 WAVELENGTH PHASE SHIFT LOCATED IN THE FORWARD PORTION OF THE DISTRIBUTED FEEDBACK (DFB) OF THE EML ASSEMBLY, AND A METHOD 审中-公开
    具有位于EML组件的分布式反馈（DFB）的前向部分中的1/4波长相位移动的电吸收式调制激光器（EML）组件，以及方法

    公开(公告)号：US20100290489A1

    公开(公告)日：2010-11-18

    申请号：US12466439

    申请日：2009-05-15

    Applicant: Michele Agresti ,  Guido Alberto Roggero ,  Rui Yu Fang ,  Roberto Paoletti

    Inventor： Michele Agresti ,  Guido Alberto Roggero ,  Rui Yu Fang ,  Roberto Paoletti

    IPC: H01S3/10 ,  H01S3/08

    CPC classification number: H01S5/12 ,  H01S5/0265 ,  H01S5/028 ,  H01S5/0425 ,  H01S5/06226 ,  H01S5/0654 ,  H01S5/1085 ,  H01S5/124

    Abstract: An EML assembly is provided that has and EAM and a DFB, with the DFB having an asymmetric ¼ wavelength phase shift positioned at a location that is in front of the center of the periodic structure of the DFB. In addition, the EML assembly has a tilted or bent waveguide that reduces reflections occurring at the front end facet, thereby enabling the EAM to produce a relatively high POUT level while also achieving reduced chirp and high single-mode yield in the DFB. By providing the EML assembly with a tilted or bent waveguide, the reflections at the front end facet are reduced without having to use an AR coating on the front end facet that has an extremely low reflectivity. By avoiding the need to use an AR coating on the front end facet that has an extremely low reflectivity, the AR coating that is used on the front end facet can be made using standard sputter deposition techniques to enable higher manufacturing yields to be achieved.

    Abstract translation: 提供了一种EML组件，其具有EAM和DFB，其中DFB具有位于DFB的周期性结构的中心前方的位置处的不对称的1/4波长相移。 此外，EML组件具有倾斜或弯曲的波导，其减小在前端小面处发生的反射，从而使得EAM能够产生相对较高的POUT电平，同时还实现DFB中的啁啾和高单模产量的降低。 通过为EML组件提供倾斜或弯曲的波导，前端小面处的反射减小，而不必在具有极低反射率的前端小面上使用AR涂层。 通过避免在具有极低反射率的前端小面上使用AR涂层的需要，可以使用标准溅射沉积技术制造用于前端小面的AR涂层，以实现更高的制造成品率。

    Wide tuneable laser sources
    2.
    发明申请
    Wide tuneable laser sources 有权
    可调谐激光源

    公开(公告)号：US20050243874A1

    公开(公告)日：2005-11-03

    申请号：US10835089

    申请日：2004-04-29

    Applicant: Roberto Paoletti ,  Michele Agresti ,  Maco Vallone

    Inventor： Roberto Paoletti ,  Michele Agresti ,  Maco Vallone

    IPC: H01S3/10 ,  H01S5/026 ,  H01S5/0625 ,  H01S5/227 ,  H01S5/343 ,  H01S5/40 ,  H01S5/50

    CPC classification number: B82Y20/00 ,  H01S5/026 ,  H01S5/06256 ,  H01S5/227 ,  H01S5/34373 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4087 ,  H01S5/50

    Abstract: A tuneable laser assembly includes a substrate having formed thereon a plurality of tuneable lasers including distributed Bragg reflector (DBR) tuning sections. The lasers have respective emission wavelengths and tuning ranges such that the laser assembly can be tuned over a quasi-continuous predetermined wavelength range. The assembly also includes a plurality of waveguides coupled to the lasers to receive therefrom the respective emission wavelengths as well as an optical coupler coupled to the waveguides to receive thereby the emissions wavelengths from the lasers. An optical amplifier is coupled to the optical coupler to amplify the emission wavelengths of the lasers coupled via the optical coupler. The tuning sections of the DBR lasers have a length in the range of about 150-200 um and are of the same optical waveguide of the waveguides routing the emission wavelengths to said optical coupler. These DBR tuning sections having a grating strength (KL) less than about 0,5 and a high reflective (HR) coated back facet enhancing the external quantum efficiency from each said tuning sections. The lasers include active sections having a length in the range of about 250-300 um comprised of a high-gain/low-loss multi quantum well (MQW) material. The lasers have a total DBR array length of about 500 nm.

    Abstract translation: 可调谐激光器组件包括其上形成有多个可调激光器的衬底，包括分布式布拉格反射器（DBR）调谐部分。 激光器具有相应的发射波长和调谐范围，使得激光器组件可以在准连续的预定波长范围内调谐。 组件还包括耦合到激光器的多个波导，以从其接收相应的发射波长，以及耦合到波导的光耦合器，从而接收来自激光器的发射波长。 光放大器耦合到光耦合器以放大经由光耦合器耦合的激光器的发射波长。 DBR激光器的调谐部分的长度在约150-200μm的范围内，并且是将发射波长路由到所述光耦合器的波导的相同的光波导。 这些DBR调谐部分具有小于约0.5的光栅强度（KL）和高反射​​（HR）涂覆的背面，从每个所述调谐部分增强外部量子效率。 激光器包括长度在约250-300μm范围内的有源部分，其包括高增益/低损耗多量子阱（MQW）材料。 激光器具有约500nm的总DBR阵列长度。

    Semiconductor laser structure and method of manufacturing same
    3.
    发明授权
    Semiconductor laser structure and method of manufacturing same 有权
    半导体激光器结构及其制造方法

    公开(公告)号：US06782026B2

    公开(公告)日：2004-08-24

    申请号：US10206833

    申请日：2002-07-29

    Applicant: Ruiyu Fang ,  Roberto Paoletti

    Inventor： Ruiyu Fang ,  Roberto Paoletti

    IPC: H01S500

    CPC classification number: H01S5/227 ,  H01S5/02276 ,  H01S5/0425 ,  H01S5/06226 ,  H01S5/2275

    Abstract: A semiconductor laser structure includes a substrate and an active region having at least one active laser layer. The active region is included in a ridge protruding from an exposed surface of the substrate. The ridge extends in the direction of the laser cavity and includes at least two opposed and electrically connected lateral extensions defining respective metal bonding pads distributed along the length of the laser cavity.

    Abstract translation: 半导体激光器结构包括具有至少一个有源激光层的衬底和有源区。 活性区域包括在从基板的暴露表面突出的脊中。 脊在激光腔的方向上延伸并且包括至少两个相对且电连接的横向延伸部，其限定沿着激光腔的长度分布的相应的金属接合焊盘。

    Wide tuneable laser sources
    4.
    发明授权
    Wide tuneable laser sources 有权
    可调谐激光源

    公开(公告)号：US07277462B2

    公开(公告)日：2007-10-02

    申请号：US10835089

    申请日：2004-04-29

    Applicant: Roberto Paoletti ,  Michele Agresti ,  Marco Vallone

    Inventor： Roberto Paoletti ,  Michele Agresti ,  Marco Vallone

    IPC: H01S5/00

    CPC classification number: B82Y20/00 ,  H01S5/026 ,  H01S5/06256 ,  H01S5/227 ,  H01S5/34373 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4087 ,  H01S5/50

    Abstract: A tuneable laser assembly includes a substrate having formed thereon a plurality of tuneable lasers, waveguides, an optical coupler and an optical amplifier. The lasers have active sections and distributed Bragg reflector (DBR) tuning sections and are characterised by respective emission wavelengths and tuning ranges such that the laser assembly can be tuned over a quasi-continuous predetermined wavelength range. The DBR tuning sections have a length in the range of about 150-200 um, are of the same optical waveguide of the waveguides, a grating strength (KL) less than about 0,5 and a high reflective (HR) coated back facet enhancing the external quantum efficiency from each said tuning sections. The active sections have a length in the range of about 250-300 um comprised of a high-gain/low-loss multi quantum well (MQW) material. The lasers have a total DBR array length of about 500 um.

    Abstract translation: 可调激光组件包括其上形成有多个可调谐激光器，波导，光耦合器和光放大器的衬底。 激光器具有有源部分和分布式布拉格反射器（DBR）调谐部分，并且其特征在于各自的发射波长和调谐范围，使得激光器组件可以在准连续的预定波长范围内调谐。 DBR调谐部分的长度范围为约150-200μm，与波导的相同的光波导，光栅强度（KL）小于约0.5，高反射（HR）涂层的后面增强 来自每个所述调谐部分的外部量子效率。 有源部分的长度在约250-300μm的范围内，包括高增益/低损耗多量子阱（MQW）材料。 激光器的总DBR阵列长度约为500um。

    Laser module with external cavity and optical fibre reflector
    5.
    发明授权
    Laser module with external cavity and optical fibre reflector 有权
    具有外腔和光纤反射器的激光模块

    公开(公告)号：US06226311B1

    公开(公告)日：2001-05-01

    申请号：US09265007

    申请日：1999-03-09

    Applicant: Marina Meliga ,  Roberto Paoletti ,  Marco Scofet ,  Luigi Tallone

    Inventor： Marina Meliga ,  Roberto Paoletti ,  Marco Scofet ,  Luigi Tallone

    IPC: H01S308

    CPC classification number: H01S5/146 ,  H01S5/026 ,  H01S5/1225

    Abstract: A laser module (1) comprises a Fabry-Perot cavity active element (2) with a facet (3) bearing an anti-reflection coating and an external cavity made by an optical fibre Bragg grating (5) with low reflectivity. This grating (5) presents a non-uniform profile of modulation of the refractive index, asymmetrical in the direction of the grating length, such as to give rise to a position of the equivalent mirror plane that is offset towards the end of the grating (5) that is closer to the active element (2).

    Abstract translation: 激光模块（1）包括具有防反射涂层的小面（3）和由具有低反射率的光纤布拉格光栅（5）制成的外腔的法布里 - 珀罗腔有源元件（2）。 该光栅（5）呈现出在光栅长度方向上不对称的折射率调制的不均匀轮廓，以产生朝向光栅端部偏移的等效反射镜平面的位置（ 5）更靠近有源元件（2）。

    Wide tuneable laser sources
    7.
    发明授权
    Wide tuneable laser sources 有权
    可调谐激光源

    公开(公告)号：US07424041B2

    公开(公告)日：2008-09-09

    申请号：US10835080

    申请日：2004-04-29

    Applicant: Marina Meliga ,  Alessandro Stano ,  Paul Marshall Charles ,  Claudio Coriasso ,  Roberto Paoletti ,  Michele Agresti ,  Marco Vallone

    Inventor： Marina Meliga ,  Alessandro Stano ,  Paul Marshall Charles ,  Claudio Coriasso ,  Roberto Paoletti ,  Michele Agresti ,  Marco Vallone

    IPC: H01S3/10 ,  H01S5/00

    CPC classification number: B82Y20/00 ,  G02B6/12004 ,  G02B6/13 ,  G02B6/2813 ,  H01S5/0085 ,  H01S5/02284 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/0268 ,  H01S5/028 ,  H01S5/06256 ,  H01S5/125 ,  H01S5/2224 ,  H01S5/227 ,  H01S5/3406 ,  H01S5/34306 ,  H01S5/34373 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4087 ,  H01S2304/04

    Abstract: A method of manufacturing a tuneable laser assembly including a substrate having formed thereon a plurality of tuneable lasers including Multi Quantum Well (MQW) active sections as well as distributed Bragg reflector (DBR) tuning sections. The lasers have respective emission wavelengths and tuning ranges such that the laser assembly can be tuned over a quasi-continuous predetermined wavelength range. The assembly also includes a plurality of passive waveguides coupled to the lasers to receive therefrom the respective emission wavelengths as well as an optical coupler coupled to the waveguides to receive via the waveguides the emissions wavelengths from the lasers. A Multi Quantum Well (MQW) amplifier coupled to the coupler amplifies the emission wavelengths coupled via the optical coupler. The method includes the steps of: using the same Multi-Quantum Well material for the Multi Quantum Well (MQW) sections of the tuneable lasers as well as for the Multi Quantum Well (MQW) amplifier, and using a common bulk material for the passive waveguides, the optical coupler and the DBR tuning sections of the lasers.

    Abstract translation: 一种制造可调激光器组件的方法，包括其上形成有多个可调激光器的衬底，所述可调谐激光器包括多量子阱（MQW）有源部分以及分布式布拉格反射器（DBR）调谐部分。 激光器具有相应的发射波长和调谐范围，使得激光器组件可以在准连续的预定波长范围内调谐。 组件还包括耦合到激光器的多个无源波导，以从其接收相应的发射波长，以及耦合到波导的光耦合器，以经由波导从激光器接收发射波长。 耦合到耦合器的多量子阱（MQW）放大器放大经由光耦合器耦合的发射波长。 该方法包括以下步骤：对可调激光器的多量子阱（MQW）部分以及多量子阱（MQW）放大器使用相同的多量子阱材料，并使用普通散装材料进行被动 波导，光耦合器和激光器的DBR调谐部分。

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