公开(公告)号：US20060088066A1

公开(公告)日：2006-04-27

申请号：US11161294

申请日：2005-07-28

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S3/11 ,  H01S5/00

CPC classification number: H01S5/0265 ,  H01S5/026 ,  H01S5/06256 ,  H01S5/06258 ,  H01S5/1017 ,  H01S5/1021 ,  H01S5/1039 ,  H01S5/12 ,  H01S5/1228 ,  H01S5/125

Abstract: A Q-modulated semiconductor laser comprises an optical gain section and an electro-absorptive modulator section, separated by a vertically etched air gap acting as a partially reflecting mirror. The modulator section is placed inside an anti-resonant Fabry-Perot cavity and acts as the rear reflector of the laser. The change of the absorption coefficient in the modulator section results in a change in the Q-factor of the laser, and consequently the lasing threshold and output power. Different embodiments are disclosed, which involve a distributed feedback (DFB) laser, a Fabry-Perot laser, a distributed Bragg reflector (DBR) laser, or a wavelength switchable multi-cavity laser. The integrated Q-modulated laser has advantages of high speed, high extinction ratio, low wavelength chirp and low cost.

Abstract translation: Q调制的半导体激光器包括由用作部分反射镜的垂直蚀刻气隙分开的光学增益部分和电吸收调制器部分。 调制器部分放置在反谐振法布里 - 珀罗腔内，并用作激光器的后反射器。 调制器部分的吸收系数的变化导致激光器的Q因子的变化，从而导致激光阈值和输出功率。 公开了涉及分布式反馈（DFB）激光器，法布里 - 珀罗激光器，分布式布拉格反射器（DBR）激光器或波长可切换多腔体激光器的不同实施例。 集成Q调制激光器具有高速，高消光比，低波长线性调频和低成本的优点。

公开(公告)号：US07019893B2

公开(公告)日：2006-03-28

申请号：US10073083

申请日：2002-02-12

Applicant: Emil S. Koteles ,  Michael Davies ,  Jian-Jun He

Inventor： Emil S. Koteles ,  Michael Davies ,  Jian-Jun He

IPC: H04B10/12

CPC classification number: H04B10/2941 ,  H01S5/4025 ,  H01S5/4087 ,  H01S5/50 ,  H01S2301/04 ,  H04B10/2914 ,  H04B2210/258

Abstract: A dynamic gain equalizer using amplification instead of attenuation is disclosed. The device relies on integrated semiconductor optical amplifiers in line with a demultiplexer on a single integrated substrate for performing equalization of signals within each of a plurality of channels.

公开(公告)号：US06650809B2

公开(公告)日：2003-11-18

申请号：US09809162

申请日：2001-03-16

Applicant: Jian-Jun He ,  Orazlo Berolo ,  Michael Davis

Inventor： Jian-Jun He ,  Orazlo Berolo ,  Michael Davis

IPC: G02B628

CPC classification number: G02B6/29326 ,  G02B6/12007 ,  G02B6/2938 ,  H04J14/02 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/021 ,  H04J14/0213 ,  H04J14/0219

Abstract: A grating based optical wavelength demultiplexer that can be used for multiple wavelength bands over a wide wavelength range is presented. The spectral response of the device is cyclic. The free spectral range of the grating is designed to be large enough to contain all the wavelength channels to be demultiplexed within a band but small compared to the overall wavelength window of the network application so that a multiplexed signal within any one of the wavelength bands within the application window can be demultiplexed by the same device. This device, being bidirectional will also operate as a multiplexer. By using such a cyclic design, an organization will not need to stock different parts for each band and thus significantly reduce the inventory cost.

Abstract translation: 提出了一种可以在宽波长范围内用于多个波段的基于光栅的光波长解复用器。 器件的光谱响应是循环的。 光栅的自由光谱范围被设计为足够大以容纳在波段内被解复用的所有波长信道，但与网络应用的总体波长窗口相比较小，使得在任何一个波长带内的复用信号在 应用程序窗口可以由同一设备解复用。 双向设备也将作为多路复用器工作。 通过使用这种循环设计，组织不需要为每个频段存储不同的部件，从而显着降低库存成本。

公开(公告)号：US07447246B2

公开(公告)日：2008-11-04

申请号：US11161294

申请日：2005-07-28

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S3/10

CPC classification number: H01S5/0265 ,  H01S5/026 ,  H01S5/06256 ,  H01S5/06258 ,  H01S5/1017 ,  H01S5/1021 ,  H01S5/1039 ,  H01S5/12 ,  H01S5/1228 ,  H01S5/125

Abstract: A Q-modulated semiconductor laser comprises an optical gain section and an electro-absorptive modulator section, separated by a vertically etched air gap acting as a partially reflecting mirror. The modulator section is placed inside an anti-resonant Fabry-Perot cavity and acts as the rear reflector of the laser. The change of the absorption coefficient in the modulator section results in a change in the Q-factor of the laser, and consequently the lasing threshold and output power. Different embodiments are disclosed, which involve a distributed feedback (DFB) laser, a Fabry-Perot laser, a distributed Bragg reflector (DBR) laser, or a wavelength switchable multi-cavity laser. The integrated Q-modulated laser has advantages of high speed, high extinction ratio, low wavelength chirp and low cost.

Abstract translation: Q调制的半导体激光器包括由用作部分反射镜的垂直蚀刻气隙分开的光学增益部分和电吸收调制器部分。 调制器部分放置在反谐振法布里 - 珀罗腔内，并用作激光器的后反射器。 调制器部分的吸收系数的变化导致激光器的Q因子的变化，从而导致激光阈值和输出功率。 公开了涉及分布式反馈（DFB）激光器，法布里 - 珀罗激光器，分布式布拉格反射器（DBR）激光器或波长可切换多腔体激光器的不同实施例。 集成Q调制激光器具有高速，高消光比，低波长啁啾和低成本的优点。

公开(公告)号：US20060251139A1

公开(公告)日：2006-11-09

申请号：US11306520

申请日：2005-12-30

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S5/00 ,  H01S3/06 ,  H01S3/14 ,  H01S3/04 ,  H01S3/07

CPC classification number: H01S5/10 ,  H01S5/0612 ,  H01S5/1003 ,  H01S5/101 ,  H01S5/1017 ,  H01S5/1021

Abstract: A semiconductor laser comprises two optical cavities, each comprising an optical waveguide bounded by two partially reflecting elements. The two optical waveguides are disposed on a substrate to form a substantially V-shaped geometry with substantially no cross-coupling at the open end and a predetermined cross-coupling at the closed end for achieving an optimal single-mode selectivity of the laser. The first cavity has a length such that its resonant wavelengths correspond to a set of discrete operating channels. The second cavity has a slightly different length so that only one resonant wavelength coincides with one of the resonant wavelengths of the first cavity over the operating spectral window. The lasing action occurs at the common resonant wavelength. In operation, at least a portion of the optical waveguide in each of the first and the second cavities are forward biased to provide substantially equal round-trip optical gains. The second cavity is tuned by varying the effective refractive index of a portion of the waveguide through an electrical means, resulting in wavelength switching among the set of discrete operating wavelengths as determined by the first cavity.

Abstract translation: 半导体激光器包括两个光学腔，每个光腔包括由两个部分反射元件限定的光波导。 两个光波导设置在基板上以形成基本上V形的几何形状，在开口端基本上没有交叉耦合，并且在封闭端处具有预定的交叉耦合，以实现激光器的最佳单模选择性。 第一腔具有使得其谐振波长对应于一组离散操作通道的长度。 第二腔具有稍微不同的长度，使得仅一个谐振波长与工作光谱窗口上的第一腔的谐振波长之一重合。 激光作用发生在共振谐振波长。 在操作中，第一和第二空腔中的每一个中的光波导的至少一部分被正向偏置以提供基本相等的往返光学增益。 通过通过电气装置改变波导的一部分的有效折射率来调节第二腔，从而在由第一腔确定的离散工作波长组之间进行波长切换。

公开(公告)号：US06768841B2

公开(公告)日：2004-07-27

申请号：US10097738

申请日：2002-03-15

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: G02B626

CPC classification number: G02B6/12007 ,  G02B6/29326 ,  G02B6/29328 ,  G02B6/29386

Abstract: A grating based optical de-interleaver useful over a wide wavelength range is presented. An echelle grating is used as dispersive element. The spectral response of the device is cyclic. The free spectral range of the grating is designed to separate wavelength channels to be de-interleaved. This device, being bi-directional will also operate as an interleaver.

Abstract translation: 提出了一种在宽波长范围内有用的基于光栅的光学去交织器。 梯形光栅用作色散元件。 器件的光谱响应是循环的。 光栅的自由光谱范围被设计成分离待交错的波长通道。 该设备双向还将作为交织器运行。

公开(公告)号：US06654533B1

公开(公告)日：2003-11-25

申请号：US09669765

申请日：2000-09-26

Applicant: Emil S. Koteles ,  Jian-Jun He ,  Michael Davies

Inventor： Emil S. Koteles ,  Jian-Jun He ,  Michael Davies

IPC: G02B610

CPC classification number: G02B6/132 ,  G02B6/124 ,  G02B6/134 ,  G02B2006/12078 ,  G02B2006/12107 ,  G02B2006/12164

Abstract: A homogeneous semiconductor waveguide structure having an undoped core layer and doped cladding layers on both sides of the core layer is proposed wherein the waveguide core is substantially thick providing polarization independence. Because of the cladding layers having low refractive index contrast with respect to the core and being on opposing sides resulting in a substantially symmetrical structure, the waveguide, can be made single-mode with low polarization sensitivity, thus improving characteristics for conducting light therein. Furthermore, the enlarged mode size increases coupling efficiency. Also, since the waveguide is grown from a single semiconductor composition lattice matched to the substrate, wafer uniformity and reproducibility are enhanced. The three layer structure reduces birefringence sufficiently that a yield enhancing etch stop layer can be added to the structure without substantially adverse effects.

Abstract translation: 提出了一种均匀的半导体波导结构，其具有未掺杂的芯层和在芯层的两侧上的掺杂包层，其中波导芯基本上是厚的，提供极化独立性。 由于包层相对于芯具有低的折射率对比度并且在相对的两侧产生基本上对称的结构，所以波导可以制成具有低偏振灵敏度的单模，从而改善在其中传导光的特性。 此外，放大的模式尺寸增加耦合效率。 此外，由于波导从与衬底匹配的单个半导体组成晶格生长，晶片的均匀性和再现性增强。 三层结构足够减少双折射，使得增强的增强蚀刻停止层可以添加到结构中而没有实质上的不利影响。

公开(公告)号：US5937113A

公开(公告)日：1999-08-10

申请号：US61939

申请日：1998-04-17

Applicant: Jian-Jun He ,  Emil S. Koteles ,  L. Erickson ,  B. Lamontagne ,  A. Delage

Inventor： Jian-Jun He ,  Emil S. Koteles ,  L. Erickson ,  B. Lamontagne ,  A. Delage

IPC: G02B6/10 ,  G02B6/12 ,  G02B6/125 ,  G02B6/126 ,  G02B6/34 ,  G02B6/00

CPC classification number: G02B6/12014 ,  G01J3/02 ,  G01J3/0259 ,  G01J3/0286 ,  G02B6/10 ,  G02B6/12007 ,  G02B6/12028 ,  G02B6/125 ,  G02B6/126

Abstract: A device for compensating the birefringence normally associated with an integrated optical waveguide grating device has a polarization compensating slab waveguide region. This compensating region can be provided within the slab waveguide region normally present in the grating device by etching, doping, ion implanting a sub-region of a predetermined shape and dimension to change its birefringence. Alternatively, or in combination with changing the birefringence in this sub-region, electrodes can be provided for electro-optically changing the birefringence dynamically as required. This device can be applied to reflective and transmissive diffraction gratings and to phased array waveguide gratings.

Abstract translation: 用于补偿通常与集成光波导光栅装置相关联的双折射的装置具有偏振补偿平板波导区域。 该补偿区域可以通过蚀刻，掺杂，离子注入预定形状和尺寸的子区域以改变其双折射率而设置在通常存在于光栅器件中的平板波导区域内。 或者，或者结合改变该子区域中的双折射，可以提供用于根据需要动态地电光改变双折射的电极。 该器件可应用于反射和透射衍射光栅以及相控阵列波导光栅。

公开(公告)号：US07382817B2

公开(公告)日：2008-06-03

申请号：US11306520

申请日：2005-12-30

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S3/03

CPC classification number: H01S5/10 ,  H01S5/0612 ,  H01S5/1003 ,  H01S5/101 ,  H01S5/1017 ,  H01S5/1021

Abstract: A semiconductor laser comprises two optical cavities, each comprising an optical waveguide bounded by two partially reflecting elements. The two optical waveguides are disposed on a substrate to form a substantially V-shaped geometry with substantially no cross-coupling at the open end and a predetermined cross-coupling at the closed end for achieving an optimal single-mode selectivity of the laser. The first cavity has a length such that its resonant wavelengths correspond to a set of discrete operating channels. The second cavity has a slightly different length so that only one resonant wavelength coincides with one of the resonant wavelengths of the first cavity over the operating spectral window. The lasing action occurs at the common resonant wavelength. In operation, at least a portion of the optical waveguide in each of the first and the second cavities are forward biased to provide substantially equal round-trip optical gains. The second cavity is tuned by varying the effective refractive index of a portion of the waveguide through an electrical means, resulting in wavelength switching among the set of discrete operating wavelengths as determined by the first cavity.

Abstract translation: 半导体激光器包括两个光学腔，每个光腔包括由两个部分反射元件限定的光波导。 两个光波导设置在基板上以形成基本上V形的几何形状，在开口端基本上没有交叉耦合，并且在封闭端处具有预定的交叉耦合，以实现激光器的最佳单模选择性。 第一腔具有使得其谐振波长对应于一组离散操作通道的长度。 第二腔具有稍微不同的长度，使得仅一个谐振波长与工作光谱窗口上的第一腔的谐振波长之一重合。 激光作用发生在共振谐振波长。 在操作中，第一和第二空腔中的每一个中的光波导的至少一部分被正向偏置以提供基本相等的往返光学增益。 通过通过电气装置改变波导的一部分的有效折射率来调节第二腔，从而在由第一腔确定的离散工作波长组之间进行波长切换。

公开(公告)号：US20050249256A1

公开(公告)日：2005-11-10

申请号：US10908362

申请日：2005-05-09

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S5/00 ,  H01S5/0625

CPC classification number: H01S5/06256

Abstract: A monolithically integrated wavelength switchable laser comprises three coupled Fabry-Perot cavities. The length and consequently the free spectral range of the first cavity are designed such that the resonant peaks correspond substantially to a set of discrete operating wavelengths separated by a constant channel spacing. The second cavity has a slightly different length so that only one resonant peak coincides with one of the resonant peaks of the first cavity over the spectral window of the material gain. The lasing action occurs at the common resonant wavelength. The two cavities are coupled through a third short cavity that produces a certain coupling loss and phase relationship between the first and the second cavities in order to achieve an optimal mode selectivity of the combined cavity laser. In operation, both the first and the second cavities are forward biased to provide optical gains for the laser action. The second cavity is tuned by varying the refractive index of at least a portion of the waveguide within the cavity through an electrical means, resulting in wavelength switching of the laser among the set of discrete operating wavelengths as determined by the first cavity.

Abstract translation: 单片集成波长可切换激光器包括三个耦合的法布里 - 珀罗腔。 第一腔的长度和随后的自由光谱范围被设计成使得谐振峰基本上对应于由恒定沟道间隔分开的一组离散工作波长。 第二腔具有稍微不同的长度，使得只有一个谐振峰与材料增益的光谱窗口上的第一腔的谐振峰之一重合。 激光作用发生在共振谐振波长。 两个空腔通过第三短腔耦合，其在第一和第二腔之间产生一定的耦合损耗和相位关系，以实现组合的腔体激光器的最佳模式选择性。 在操作中，第一和第二腔都被正向偏置以提供用于激光作用的光学增益。 通过电气装置改变腔内波导的至少一部分的折射率来调节第二腔，从而导致激光在由第一腔确定的离散工作波长组中的波长切换。