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    • 2. 发明授权
    • Suppression of stray light propagation in a substrate
    • 抑制衬底中的杂散光传播
    • US07943229B2
    • 2011-05-17
    • US11382007
    • 2006-05-05
    • Henry A. BlauveltDavid W. Vernooy
    • Henry A. BlauveltDavid W. Vernooy
    • B32B7/02
    • G02B6/4246G02B6/122G02B6/4214Y10T428/24942Y10T428/31663
    • An optical apparatus comprises: a substrate; an optical device, an optical waveguide, or an optical element on the first substrate surface; a reflection-suppressing layer on a second substrate surface opposite the first substrate surface; and an absorbing layer on the reflection-suppressing layer, so that over at least a portion of the second substrate surface the reflection-suppressing layer is between the second substrate surface and the absorbing layer. The absorbing layer absorbs light over at least a portion of an operative wavelength range of the optical apparatus, while the reflection-suppressing layer suppresses reflection from the second substrate surface of light over at least a portion of the operative wavelength range of the optical apparatus to a reflectivity value below that of the second substrate surface with only the absorbing layer present.
    • 光学装置包括:基板; 第一基板表面上的光学装置,光波导或光学元件; 在与第一基板表面相对的第二基板表面上的反射抑制层; 以及反射抑制层上的吸收层,使得在第二基板表面的至少一部分上,反射抑制层位于第二基板表面和吸收层之间。 吸收层在光学装置的工作波长范围的至少一部分上吸收光,而反射抑制层在光学装置的至少一部分工作波长范围内抑制来自第二基板表面的反射, 反射率值低于仅具有吸收层的第二衬底表面的反射率值。
    • 3. 发明申请
    • Burst Mode Linear Optical Receivers
    • 突发模式线性光接收机
    • US20110110672A1
    • 2011-05-12
    • US12616594
    • 2009-11-11
    • Henry A. Blauvelt
    • Henry A. Blauvelt
    • H04B10/06
    • H04B10/693
    • Techniques are provided for implementing a burst mode optical receiver capable of maintaining a stable gain profile in response to a burst signal. The optical receiver has a photodiode in balanced circuit configuration with a separate RF amplifier stage connected to each terminal of the photodiode. The two RF amplifier stages are coupled to biasing voltage sources that are inverted in comparison to the terminal connections and that, in some examples, each contain a field effect transistor (FET) that having a gate that is controlled in response to a sensed voltage. The burst mode optical receiver may be used in numerous applications, including optical line terminations (OLTs) in passive optical networks (PONs).
    • 提供技术用于实现能够响应于突发信号而保持稳定增益分布的突发模式光接收机。 光接收器具有平衡电路配置中的光电二极管,其具有连接到光电二极管的每个端子的单独的RF放大器级。 两个RF放大器级耦合到与端子连接相反的偏置电压源,并且在一些示例中,每个包含具有响应于感测电压而被控制的栅极的场效应晶体管(FET)。 突发模式光接收机可用于许多应用,包括无源光网络(PON)中的光线路终端(OLT)。
    • 4. 发明授权
    • Bias signal generation for a laser transmitter in a passive optical network
    • 无源光网络中激光发射机的偏置信号产生
    • US07907649B2
    • 2011-03-15
    • US12403172
    • 2009-03-12
    • Henry A. Blauvelt
    • Henry A. Blauvelt
    • H01S3/13H01S3/00
    • H04B10/504H04B10/564
    • The teachings presented herein disclose a method and apparatus for controlling the optical power of a laser in a passive optical network transmitter that outputs a modulated optical signal responsive to a modulated input signal. In one or more embodiments, such a control method comprises detecting the voltage of the modulated input signal, and setting the DC bias level of the laser as a function of the detected voltage. These teachings may be implemented, for example, by a laser control circuit in the transceiver module of an optical network unit (“ONU”). Such an ONU may be advantageously used in a hybrid coaxial cable-optical fiber network, such as used in DPONs which interface cable system subscriber equipment to cable system head-end equipment.
    • 本文提出的教导公开了一种用于在无源光网络发射机中控制激光器的光功率的方法和装置,其响应于调制的输入信号输出调制的光信号。 在一个或多个实施例中,这种控制方法包括检测调制输入信号的电压,以及根据检测到的电压设置激光的DC偏置电平。 这些教导可以例如通过光网络单元(“ONU”)的收发器模块中的激光控制电路来实现。 这样的ONU可以有利地用在混合同轴电缆光纤网络中,例如在将电缆系统用户设备连接到电缆系统头端设备的DPON中使用。
    • 6. 发明申请
    • Independent upstream/downstream bandwidth allocations in a common hybrid telecommunications network
    • 在通用混合电信网络中独立的上行/下行带宽分配
    • US20080310838A1
    • 2008-12-18
    • US11952275
    • 2007-12-07
    • Henry A. Blauvelt
    • Henry A. Blauvelt
    • H04J14/00H04B10/12
    • H04B10/25751
    • A network interface apparatus comprises a bidirectional optical signal port, an optical diplexer connected to the bidirectional optical signal port, a first RF signal port (bidirectional), a second RF signal port, a first RF diplexer, and an RF splitter. The RF diplexer transmits a first received RF input signal from the first RF signal port to the optical diplexer to modulate an optical output signal transmitted by the optical diplexer to the optical signal port. The RF splitter receives from the optical diplexer an RF signal derived from an RF-modulated optical input signal received from the bidirectional optical signal port, transmits a first portion of the derived RF signal as a first RF output signal to the first RF signal port through the first RF diplexer, and transmits a second portion of the derived RF signal as a second RF output signal to the second RF signal port.
    • 网络接口装置包括双向光信号端口,连接到双向光信号端口的光双工器,第一RF信号端口(双向),第二RF信号端口,第一RF双工器和RF分离器。 RF双工器将第一接收的RF输入信号从第一RF信号端口传输到光学双工器,以将由光学双工器发送的光输出信号调制到光信号端口。 RF分离器从光学双工器接收从从双向光信号端口接收的RF调制的光输入信号得到的RF信号,将导出的RF信号的第一部分作为第一RF输出信号发送到第一RF信号端口,通过 第一RF双工器,并且将所导出的RF信号的第二部分作为第二RF输出信号发送到第二RF信号端口。
    • 8. 发明授权
    • Grating-stabilized semiconductor laser
    • 光栅稳定半导体激光器
    • US07227880B2
    • 2007-06-05
    • US11140022
    • 2005-05-26
    • Henry A. BlauveltDavid W. VernooyJoel S. Paslaski
    • Henry A. BlauveltDavid W. VernooyJoel S. Paslaski
    • H01S5/00H01S3/03H01S3/08
    • H01S5/125H01S5/026H01S5/0654H01S5/0656H01S5/0687H01S5/1032H01S5/1092H01S5/1096H01S5/12H01S5/1209H01S5/14H01S5/141
    • A grating-stabilized semiconductor laser comprises a semiconductor laser gain medium, an integrated low-index waveguide, and a waveguide grating segment providing optical feedback for laser oscillation. The laser may be adapted for multi-mode or single-mode operation. A multiple-mode laser may oscillate with reduced power and/or wavelength fluctuations associated with longitudinal mode wavelength shifts, relative to Fabry-Perot lasers lacking gratings. A single-mode laser may include a compensator, wavelength reference, and detector for generating an error signal, and a feedback mechanism for controlling the compensator for maintaining the laser wavelength locked to the reference. The laser may include means for altering, enhancing, tuning, and/or stabilizing the waveguide grating reflectivity spectral profile. The laser may be adapted for optical transverse-coupling to another waveguide.
    • 光栅稳定的半导体激光器包括半导体激光增益介质,集成低折射率波导和提供用于激光振荡的光反馈的波导光栅段。 激光器可适用于多模式或单模式操作。 相对于缺乏光栅的法布里 - 珀罗(Fabry-Perot)激光器,多模激光器可以以相对于纵向模式波长偏移的功率和/或波长波动降低而振荡。 单模激光器可以包括用于产生误差信号的补偿器,波长参考和检测器,以及用于控制补偿器的反馈机构,用于保持锁定到参考的激光波长。 激光器可以包括用于改变,增强,调谐和/或稳定波导光栅反射率光谱分布的装置。 激光器可适用于与另一个波导的光学横向耦合。
    • 9. 发明授权
    • Multiple-core planar optical waveguides and methods of fabrication and use thereof
    • 多芯平面光波导及其制造和使用方法
    • US07164838B2
    • 2007-01-16
    • US11058535
    • 2005-02-15
    • Henry A. BlauveltDavid W. Vernooy
    • Henry A. BlauveltDavid W. Vernooy
    • G02B6/10
    • G02B6/12002G02B6/1228G02B6/305G02B2006/12147
    • A multiple-core optical waveguide comprises: a substrate; lower and upper waveguide core layers; a waveguide core between the upper and lower waveguide core layers; upper and lower cladding; and middle cladding between the upper and lower waveguide core layers substantially surrounding the waveguide core. Each of the lower, middle, and upper claddings has a refractive index less than refractive indices of the lower waveguide core layer, the upper waveguide core layer, and the waveguide core. Along at least a given portion of the optical waveguide, the upper and lower waveguide core layers extend bilaterally substantially beyond the lateral extent of a propagating optical mode supported by the optical waveguide, the lateral extent of the supported optical mode being determined at least in part by the width of the waveguide core along the given portion of the optical waveguide.
    • 多芯光波导包括:基板; 上下波导芯层; 在上下波导芯层之间的波导芯; 上下包层; 以及基本上围绕波导芯的上下波导芯层之间的中间包层。 下部,中部和上部包层中的每一个具有小于下部波导芯层,上部波导芯层和波导芯的折射率的折射率。 沿着光波导的给定部分,上波导芯层和下波导芯层两侧基本上延伸超过由光波导支撑的传播光学模式的横向范围,支撑的光学模式的横向范围至少部分地被确定 沿着光波导的给定部分的波导芯的宽度。