公开(公告)号：US06169838A

公开(公告)日：2001-01-02

申请号：US09330137

申请日：1999-06-11

Applicant: Jian-Jun He ,  Emil S. Koteles

Inventor： Jian-Jun He ,  Emil S. Koteles

IPC: G02B610

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

Abstract: A device for compensating the temperature sensitivity normally associated with an integrated optical waveguide grating device has a temperature compensating slab waveguide region. This compensating region is provided within the slab waveguide region normally present in the grating device by modifying a sub-region of a predetermined shape and dimension to change its temperature coefficient of refractive index. This method and device can be applied to reflective and transmissive diffraction gratings and to phased array waveguide gratings.

Abstract translation: 用于补偿与集成光波导光栅装置通常相关的温度敏感度的装置具有温度补偿平板波导区域。 通过修改预定形状和尺寸的子区域来改变其折射率的温度系数，该补偿区域设置在通常存在于光栅装置中的平板波导区域内。 该方法和器件可以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：US20120298849A1

公开(公告)日：2012-11-29

申请号：US13575602

申请日：2011-01-21

Applicant: Jian-Jun He ,  Lei Jin ,  Mingyu Li

Inventor： Jian-Jun He ,  Lei Jin ,  Mingyu Li

IPC: G01J1/04

CPC classification number: G01N21/7746 ,  G01D5/35319 ,  G01J1/04 ,  G01K11/00 ,  H01P7/00 ,  H01P11/00 ,  H01P11/007 ,  H01P11/008

Abstract: An optical sensor based on a broadband light source and cascaded waveguide filters comprises a broadband light source, an input waveguide, a reference ring resonator coupled with the input waveguide, a common bus waveguide coupled with the reference ring resonator, a sensing ring resonator coupled with the common bus waveguide, an output waveguide coupled with the sensing ring resonator, and two optical power detectors. At least a portion of the sensing ring resonator is influenced by the physical parameter to be measured or in contact with an analyte. The variation of the physical parameter to be measured or the variation of the analyte induces a shift of the transmission spectrum of the sensing ring resonator. By using the cascaded filtering effect of the double resonators, the wavelength shift can be translated into a variation of the total output power. Consequently the physical parameter to be measured can be easily deduced.

Abstract translation: 基于宽带光源和级联波导滤波器的光学传感器包括宽带光源，输入波导，与输入波导耦合的参考环形谐振器，与参考环形谐振器耦合的公共总线波导，耦合到 公共总线波导，与感测环谐振器耦合的输出波导和两个光功率检测器。 感测环谐振器的至少一部分受被测物理参数或与分析物接触的影响。 要测量的物理参数的变化或分析物的变化引起感测环形谐振器的透射光谱的偏移。 通过使用双谐振器的级联滤波效应，波长偏移可以转化为总输出功率的变化。 因此，可以容易地推导要测量的物理参数。

公开(公告)号：US20120194804A1

公开(公告)日：2012-08-02

申请号：US13496886

申请日：2010-10-14

Applicant: Jian-Jun He ,  Tingting Yu ,  Min Lou

Inventor： Jian-Jun He ,  Tingting Yu ,  Min Lou

IPC: G01N21/41

CPC classification number: G01N21/7746 ,  G01N21/05 ,  G01N21/45 ,  G01N2021/0346 ,  G01N2021/391 ,  G01N2021/399 ,  G01N2021/458

Abstract: A semiconductor laser based intra-cavity optical micro-fluidic biosensor comprises a coupled-cavity semiconductor laser, a 2×2 coupler and a phase adjustment section on one input port of the coupler. The dominant mode of the coupled-cavity laser appears in one output port of the coupler, while the adjacent mode comes out from the other output port of the coupler. The resonant frequency interval of the sensing cavity is slightly larger or smaller than one half of that of the reference cavity. Part of the sensing cavity is the sensing section which is covered by an analyte. The refractive index change of the analyte will cause the lasing mode of the coupled cavity to switch to an adjacent mode, resulting in a π-phase change in the phase difference between the two output ports of the two resonance cavities. By applying the Vernier effect, the power ratio of the two output ports of the coupler will change and the refractive index change of the analyte can be derived. A detection limit of 10−8 RIU or smaller can be achieved.

Abstract translation: 基于半导体激光的腔内光学微流体生物传感器包括耦合腔的一个输入端口上的耦合腔半导体激光器，2×2耦合器和相位调整部分。 耦合腔激光器的主要模式出现在耦合器的一个输出端口中，而相邻模式从耦合器的另一个输出端口出来。 感应腔的谐振频率间隔略大于或小于参考腔的谐振频率间隔的一半。 感测腔的一部分是被分析物覆盖的感测部分。 分析物的折射率变化将导致耦合空腔的激光模式切换到相邻模式，导致两个谐振腔的两个输出端口之间的相位差的相位变化。 通过应用游标效应，耦合器的两个输出端口的功率比将改变，并且可以导出分析物的折射率变化。 可以实现10-8 RIU以下的检测限。

公开(公告)号：US08131122B2

公开(公告)日：2012-03-06

申请号：US12509453

申请日：2009-07-25

Applicant: Lei Wang ,  Li Zhang ,  Jian-Jun He

Inventor： Lei Wang ,  Li Zhang ,  Jian-Jun He

IPC: G02B6/12 ,  H04B10/24

CPC classification number: G02B6/12007 ,  B82Y20/00 ,  G02B6/4246 ,  G02B6/43 ,  H01S5/0262 ,  H01S5/1032 ,  H01S5/1071 ,  H01S5/3434 ,  H04B10/40 ,  H04J3/1694

Abstract: An integrated single-fiber multi-directional transceiver such as a diplexer or triplexer for FTTH applications comprises at least a laser for transmitting a first signal at a first wavelength, a photodetector for receiving a second signal at a second wavelength, and a 2×2 optical coupler. The 2×2 optical coupler has four ports, of which port 1 connects to a fiber through an input/output waveguide, port 2 leads to the photodetector through another waveguide, port 3 and port 4 are connected with the gain waveguide and are placed inside the laser cavity. Light emitted by the gain waveguide inside the laser cavity at port 3 of the coupler is partially coupled to port 4 as a feedback for the laser and partially coupled to port 1 which couples to the optical fiber to transmit the first signal. On the other hand, the second signal at the second wavelength that is launched into the coupler from the input/output waveguide at port 1 is entirely coupled to port 2 that leads to the photodetector. The design allows both the transmitted and received signals to be directed to their intended destinations with minimal loss.

Abstract translation: 诸如用于FTTH应用的双工器或三工器的集成单纤维多方向收发器至少包括用于传输第一波长的第一信号的激光器，用于接收第二波长的第二信号的光电检测器和2×2 光耦合器。 2×2光耦合器具有四个端口，其端口1通过输入/输出波导连接到光纤，端口2通过另一个波导通向光电检测器，端口3和端口4与增益波导连接并放置在 激光腔。 由耦合器的端口3处的激光腔内的增益波导发射的光部分地耦合到端口4作为用于激光器的反馈并部分耦合到端口1，端口1耦合到光纤以传输第一信号。 另一方面，从端口1处的输入/输出波导发射到耦合器的第二波长的第二信号完全耦合到通向光电检测器的端口2。 该设计允许发送和接收的信号以最小的损失被引导到其预定的目的地。

公开(公告)号：US07738527B2

公开(公告)日：2010-06-15

申请号：US11964708

申请日：2007-12-26

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S3/083

CPC classification number: H01S5/026 ,  H01S5/1032 ,  H01S5/142

Abstract: A semiconductor laser comprises two optical ring resonators, each comprising an optical waveguide electrically pumped to provide optical gain. The two ring resonators have different round-trip optical path lengths, and are coupled to each other through a half-wave optical coupler. The half-wave optical coupler has a predetermined cross-coupling coefficient and a 180-degree cross-coupling phase. The cross-coupling coefficient is substantially less than the self-coupling coefficients in order to achieve an optimal single-mode selectivity of the laser. The first ring resonator has an optical path length such that its resonant wavelengths correspond to a set of discrete operating channels. The second ring resonator has a slightly different length so that only one resonant wavelength coincides with one of the resonant wavelengths of the first ring resonator 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 ring resonators are forward biased to provide substantially equal round-trip optical gains. The second ring resonator 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 ring resonator.

Abstract translation: 半导体激光器包括两个光环谐振器，每个光环谐振器包括电泵浦的光波导以提供光增益。 两个环形谐振器具有不同的往返光路长度，并且通过半波光耦合器彼此耦合。 半波光耦合器具有预定的交叉耦合系数和180度交叉耦合相位。 交叉耦合系数基本上小于自耦合系数，以便实现激光器的最佳单模选择性。 第一环形谐振器具有使得其谐振波长对应于一组离散操作通道的光程长度。 第二环形谐振器具有稍微不同的长度，使得在工作光谱窗口上只有一个谐振波长与第一环形谐振器的谐振波长之一一致。 激光作用发生在共振谐振波长。 在操作中，第一和第二环形谐振器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谐第二环形谐振器，从而导致由第一环形谐振器确定的离散工作波长组之间的波长切换。

公开(公告)号：US20060104321A1

公开(公告)日：2006-05-18

申请号：US11163019

申请日：2005-10-03

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S3/10

CPC classification number: H01S5/0265 ,  H01S5/1039 ,  H01S5/1209 ,  H01S5/1215 ,  H01S5/1221 ,  H01S5/124 ,  H01S5/125

Abstract: A Q-modulated semiconductor laser comprises a λ/4-phase-shifted distributed-feedback grating. Two isolated electrodes are deposited on top of the grating, and one electrode is deposited on the back side of the laser substrate as a common ground. The first top-side electrode covers a portion of the grating including the phase-shift region, and provides an optical gain for the laser when a constant current is injected. The second top-side electrode covers the remaining portion of the grating away from the phase-shift region, which acts as a Q-modulator of the laser. An electrical signal is applied on the second electrode to change the absorption coefficient of the waveguide in the modulator section, resulting in a change in the Q-factor of the laser, and consequently the lasing threshold and output power. The integrated Q-modulated laser has advantages of high speed, high extinction ratio, low wavelength chirp and low cost.

Abstract translation: Q调制半导体激光器包括λ/ 4相移分布反馈光栅。 两个隔离电极沉积在光栅的顶部，一个电极沉积在激光基板的背面作为公共地面。 第一顶侧电极覆盖包括相移区域的光栅的一部分，并且当注入恒定电流时，为激光器提供光学增益。 第二顶侧电极覆盖离开相移区域的光栅的剩余部分，该相移区域用作激光器的Q调制器。 电信号施加在第二电极上以改变调制器部分中的波导的吸收系数，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。 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：US20050226283A1

公开(公告)日：2005-10-13

申请号：US10907495

申请日：2005-04-04

Applicant: Jian-Jun He

Inventor： Jian-Jun He

IPC: H01S3/10 ,  H01S5/00 ,  H01S5/026 ,  H01S5/10 ,  H01S5/12

CPC classification number: H01S5/0264 ,  H01S5/026 ,  H01S5/0654 ,  H01S5/1017 ,  H01S5/1021 ,  H01S5/1039 ,  H01S5/12

Abstract: A monolithic single-mode semiconductor laser comprises three coupled Fabry-Perot cavities in tandem, each separated by a vertically etched air gap of a size that is substantially equal to an odd-integer multiple of quarter-wavelength. The middle cavity is actively pumped to provide gains to the combined cavity laser. The other cavities are substantially transparent and act as an optical filter to select one of the longitudinal modes of the middle cavity as the lasing mode. The lengths of the two passive cavities are substantially different so that a narrow filtering function with a large free spectral range is obtained for optimal mode selectivity.

Abstract translation: 单片单模半导体激光器包括串联的三个耦合的法布里 - 珀罗腔，每个腔分别由基本上等于四分之一波长的奇整数倍的尺寸的垂直蚀刻气隙隔开。 中腔被主动泵送，以提供组合腔激光器的增益。 其它空腔基本上是透明的，并且用作滤光器以选择中空腔的一个纵模作为激光模式。 两个无源腔的长度基本不同，从而获得具有较大自由光谱范围的窄滤波函数以实现最佳模式选择性。

公开(公告)号：US06904205B2

公开(公告)日：2005-06-07

申请号：US10861465

申请日：2004-06-07

Applicant: Orazio Berolo ,  Jian-Jun He ,  Emil S. Koteles ,  Bryant Hichwa ,  John Wade

Inventor： Orazio Berolo ,  Jian-Jun He ,  Emil S. Koteles ,  Bryant Hichwa ,  John Wade

IPC: G01J3/02 ,  G01J3/18 ,  G02B6/12 ,  G02B6/34

CPC classification number: G02B6/4215 ,  G01J3/0256 ,  G01J3/0259 ,  G01J3/0294 ,  G01J3/18 ,  G02B6/12007

Abstract: A waveguide optical monitor is disclosed. The device has an optical input port coupled through a switch to a plurality of input waveguides. A dispersive element disperses light within the input optical waveguides toward a plurality of output waveguides. There are a plurality of photodetectors each optically coupled to an output waveguide. The photodectors are for sensing an intensity of light within the waveguide with which it is optically coupled. An optical switch in optical communication with the optical input port and for switching light received at the optical input port to one of the plurality of input waveguides. Also, an angular dispersive element is present for receiving light from any one of the waveguides and for dispersing the light toward a plurality of output waveguides in dependence upon the input waveguide position and a wavelength of the light such that light directed from the first of the plurality of input waveguides toward the plurality of output waveguides has a first centre wavelength within each of the output waveguides and light directed from the second of the plurality of input waveguides toward the plurality of output waveguides has a second different centre wavelength within each of the output waveguides, the second different center wavelength different form any first center wavelength.

Abstract translation: 公开了一种波导光学监视器。 该装置具有通过开关耦合到多个输入波导的光输入端口。 分散元件将光输送到输入光波导内朝向多个输出波导。 存在多个光电检测器，每个光电检测器光耦合到输出波导。 光电探测器用于感测与光学耦合的波导内的光强度。 光开关，其与所述光输入端口光通信并将在所述光输入端口处接收的光切换到所述多个输入波导中的一个。 此外，存在用于从任何一个波导接收光的角度色散元件，并且用于根据输入波导位置和光的波长将光分散到多个输出波导，使得从第一个 朝向多个输出波导的多个输入波导具有在每个输出波导内的第一中心波长，并且从多个输入波导中的第二个朝着多个输出波导引导的光在每个输出波导内具有第二不同的中心波长 波导，第二不同的中心波长不同形成任何第一中心波长。

公开(公告)号：US5757023A

公开(公告)日：1998-05-26

申请号：US787958

申请日：1997-01-23

Applicant: Emil S. Koteles ,  Jian Jun He ,  Sylvain Charbonneau ,  Philip J. Poole

Inventor： Emil S. Koteles ,  Jian Jun He ,  Sylvain Charbonneau ,  Philip J. Poole

IPC: G02F1/017 ,  H01S5/34 ,  H01S5/50 ,  H01L29/06

CPC classification number: B82Y20/00 ,  G02F1/017 ,  H01S5/5009 ,  G02F2001/01766 ,  G02F2203/06 ,  H01S5/3404 ,  H01S5/3413 ,  H01S5/3414

Abstract: An active semiconductor device that performs in a substantially polarization independent manner. A quantum well waveguide is intermixed by intermixing atoms across an interface between well and barrier layers. The atoms include at least 2 groups wherein intermixing of one group is at a substantially greater rate than another group. Cations are interdiffused at a greater rate than said anions across interfaces between well and barrier layers. The intermixing must be sufficient to provide strain within layers of the waveguide and sufficient to at least partially degenerate light hole and heavy hole bands of the structure. Preferably intermixing is sufficient to completely degenerate light hole and heavy hold bands to essentially produce a device that is completely polarization independent.

Abstract translation: 一种以基本上极化独立的方式执行的有源半导体器件。 量子阱波导通过在阱和阻挡层之间的界面上混合原子而混合。 这些原子包括至少2个基团，其中一个基团的混合速率比另一个基本上更大的速率。 阳离子在井和阻隔层之间的界面上以比所述阴离子更大的速率相互扩散。 混合必须足以在波导的层内提供应变，并且足以使结构的光孔和重孔带至少部分地退化。 优选地，混合足以使光孔和重保持带完全退化以基本上产生完全极化独立的装置。