Apparatus and method for producing a flat-topped filter response in a multiplex/demultiplexer

    公开(公告)号:AU2003283074A8

    公开(公告)日:2004-02-25

    申请号:AU2003283074

    申请日:2003-07-30

    Abstract: A (de)multiplexer for use in optical communications systems for multiplexing and demultiplexing an optical signal consisting of optical channel(s) of different wavelength(s) includes a multiplex optical waveguide propagating a plurality of optical channels and a plurality of single channel optical waveguides, each propagating a single channel. Each of the waveguides has a receiving/transmitting end. A diffraction grating is optically coupled between the multiplex optical waveguide and the single channel optical waveguides for diffracting an optical signal between the receiving/transmitting end of the multiplex optical waveguide and the receiving/transmitting end of the single channel optical waveguide. The grooves of the diffraction have spacing which varies according to an algorithm such that a portion of the optical signal diffracted by each groove is offset in a direction of dispersion relative to the portions of the optical signal diffracted by the other surfaces to broaden the transmission band at the receiving/transmitting ends of the single channel and multiplex optical waveguides. A method for fabricating a grating as described above includes etching grooves having spacing which varies according to the algorithm such that a portion of the optical signal diffracted by each surface is offset in a direction of dispersion relative to portions of the optical signal diffracted by each other surface.

    Method and apparatus for monitoring combustion properties in an interior of a boiler

    公开(公告)号:AU2010203674A2

    公开(公告)日:2012-01-19

    申请号:AU2010203674

    申请日:2010-01-07

    Abstract: A method of monitoring combustion properties in an interior of a boiler of the type having walls comprising a plurality of parallel steam tubes separated by a metal membrane. First and second penetrations are provided in the metal membrane between adjacent tubes on opposite sides of the boiler. A beam of light is projected through a pitch optic comprising a pitch collimating lens and a pitch relay lens, both residing outside the boiler interior. The pitch relay lens projects the beam through a penetration into the boiler interior. The beam of light is received with a catch optic substantially identical to the pitch optic residing outside the boiler interior. The strength of the collimated received beam of light is determined. At least one of the pitch collimating lens and the catch collimating lens may then be aligned to maximize the strength of the collimated received beam.

    METHOD AND APPARATUS FOR MONITORING COMBUSTION PROPERTIES IN AN INTERIOR OF A BOILER

    公开(公告)号:CA2748793A1

    公开(公告)日:2010-07-15

    申请号:CA2748793

    申请日:2010-01-07

    Abstract: A method of monitoring combustion properties in an interior of a boiler of the type having walls comprising a plurality of parallel steam tubes separated by a metal membrane. First and second penetrations are provided in the metal membrane between adjacent tubes on opposite sides of the boiler. A beam of light is projected through a pitch optic comprising a pitch collimating lens and a pitch relay lens, both residing outside the boiler interior. The pitch relay lens projects the beam through a penetration into the boiler interior. The beam of light is received with a catch optic substantially identical to the pitch optic residing outside the boiler interior. The strength of the collimated received beam of light is determined. At least one of the pitch collimating lens and the catch collimating lens may then be aligned to maximize the strength of the collimated received beam.

    APPARATUS AND METHOD FOR PRODUCING A FLAT-TOPPED FILTER RESPONSE IN A MULTIPLEX/DEMULTIPLEXER

    公开(公告)号:AU2003283074A1

    公开(公告)日:2004-02-25

    申请号:AU2003283074

    申请日:2003-07-30

    Abstract: A (de)multiplexer for use in optical communications systems for multiplexing and demultiplexing an optical signal consisting of optical channel(s) of different wavelength(s) includes a multiplex optical waveguide propagating a plurality of optical channels and a plurality of single channel optical waveguides, each propagating a single channel. Each of the waveguides has a receiving/transmitting end. A diffraction grating is optically coupled between the multiplex optical waveguide and the single channel optical waveguides for diffracting an optical signal between the receiving/transmitting end of the multiplex optical waveguide and the receiving/transmitting end of the single channel optical waveguide. The grooves of the diffraction have spacing which varies according to an algorithm such that a portion of the optical signal diffracted by each groove is offset in a direction of dispersion relative to the portions of the optical signal diffracted by the other surfaces to broaden the transmission band at the receiving/transmitting ends of the single channel and multiplex optical waveguides. A method for fabricating a grating as described above includes etching grooves having spacing which varies according to the algorithm such that a portion of the optical signal diffracted by each surface is offset in a direction of dispersion relative to portions of the optical signal diffracted by each other surface.

    METHOD AND APPARATUS FOR MONITORING COMBUSTION PROPERTIES IN AN INTERIOR OF A BOILER
    6.
    发明申请
    METHOD AND APPARATUS FOR MONITORING COMBUSTION PROPERTIES IN AN INTERIOR OF A BOILER 审中-公开
    用于监测锅炉内部燃烧特性的方法和装置

    公开(公告)号:WO2010080892A3

    公开(公告)日:2010-09-02

    申请号:PCT/US2010020345

    申请日:2010-01-07

    CPC classification number: G01N21/84 F23M5/08 F23N5/082 G01B11/27 G01N21/39

    Abstract: A method of monitoring combustion properties in an interior of a boiler of the type having walls comprising a plurality of parallel steam tubes separated by a metal membrane. First and second penetrations are provided in the metal membrane between adjacent tubes on opposite sides of the boiler. A beam of light is projected through a pitch optic comprising a pitch collimating lens and a pitch relay lens, both residing outside the boiler interior. The pitch relay lens projects the beam through a penetration into the boiler interior. The beam of light is received with a catch optic substantially identical to the pitch optic residing outside the boiler interior. The strength of the collimated received beam of light is determined. At least one of the pitch collimating lens and the catch collimating lens may then be aligned to maximize the strength of the collimated received beam.

    Abstract translation: 一种在具有壁的锅炉内部监测燃烧性能的方法,所述锅炉包括由金属膜隔开的多个平行蒸汽管。 在锅炉相对侧的相邻管之间的金属膜中提供第一和第二穿透。 光束通过包括间距准直透镜和俯仰中继透镜的俯仰光学镜投影,两者都驻留在锅炉内部的外部。 俯仰继电器镜头通过穿透进入锅炉内部来投射光束。 光束被接收到与位于锅炉内部外部的俯仰光学器件基本相同的捕捉光学器件。 确定准直接收光束的强度。 间距准直透镜和捕捉准直透镜中的至少一个然后可以被对准以使准直的接收光束的强度最大化。

    (DE)MULTIPLEXER WITH INTERLEAVER FOR PRODUCING A FLAT-TOP FILTER FUNCTION AND ENHANCED CHANNEL SEPARATION
    7.
    发明申请
    (DE)MULTIPLEXER WITH INTERLEAVER FOR PRODUCING A FLAT-TOP FILTER FUNCTION AND ENHANCED CHANNEL SEPARATION 审中-公开
    (DE)多用途交错滤波器,用于生产平顶滤波器功能和增强型信道分离

    公开(公告)号:WO02071672A3

    公开(公告)日:2002-11-14

    申请号:PCT/US0206755

    申请日:2002-03-01

    CPC classification number: H04J14/02 G02B6/29308 G02B6/2931 G02B6/29386

    Abstract: An apparatus and method are provided employing a single set of reduced-cost optics for (de)multiplexing optical signals whereby the resultant signals have a flat-top response with increased channel spacing. One aspect of the present invention uses an optical interleaver (310) to separate channels from an input multichannel (multiplexed) optical signal (302) with a select channel spacing into, for example, two input signals consisting of alternating channels at twice the select channel spacing. The separated signals are then directed to a multiple-input, such as dual-input, (parallel)(de)multiplexer device (320) which further spacially separates the channels for coupling with single channel transmission fibers (3221-n, 3241-n). The input fibers to the (de)multiplexer are preferably offset relative to each other to accommodate channel shift resulting from the interleaver.

    Abstract translation: 提供了一种装置和方法,其采用用于(反)多路复用光学信号的单组成本光学器件,由此所得信号具有增加的通道间隔的平顶响应。 本发明的一个方面使用光学交织器(310)将信道从具有选择信道间隔的输入多信道(复用)光信号(302)分离为例如两个输入信号,该两个输入信号由选择信道两倍处的交替信道 间距。 然后将分离的信号引导到多输入端,例如双输入,(并联)(去)多路复用器设备(320),其进一步在空间上分离信道以与单信道传输光纤(3221-n,3241-n )。 (去)多路复用器的输入光纤优选相对于彼此偏移以适应由交织器导致的信道偏移。

    BULK OPTICAL (DE)MULTIPLEXER APPARATUS AND METHOD OF PACKAGING
    8.
    发明申请
    BULK OPTICAL (DE)MULTIPLEXER APPARATUS AND METHOD OF PACKAGING 审中-公开
    BULK OPTICAL(DE)多路复用器装置和包装方法

    公开(公告)号:WO0237726A3

    公开(公告)日:2002-11-07

    申请号:PCT/US0145276

    申请日:2001-10-31

    Abstract: A bulk optic (de)multiplexer (10) consists of a fiber pigtail array (20), a focusing optic (18) and a wavelength dispersive element or grating (16) in optical alignment along an optical axis (22). The focusing optic is rigidly affixed to the frame and the fiber pigtail array (20) and wavelength dispersive element (16) are attached by adjustable connectors (112, 56, 340) to facilitate al ignment. The frame (12) has thermally expansive elements to compensate for shifts in light beams processed by the (de)multiplexer as a function of temperature. Vibration dampers (150, 152, 154, 160, 200) isolate the frame and optical elements form vibrations applied to the (de)multiplexer.

    Abstract translation: 体光学(de)多路复用器(10)由光纤尾纤阵列(20),聚焦光学元件(18)和沿着光轴(22)光学对准的波长色散元件或光栅(16)组成。 聚焦光学器件刚性地固定到框架上,并且光纤尾纤阵列(20)和波长色散元件(16)通过可调节的连接器(112,56,340)附接,以便于被点燃。 框架(12)具有热膨胀元件以补偿由(de)多路复用器处理的光束中的偏移作为温度的函数。 振动阻尼器(150,152,154,160,200)隔离框架和光学元件,形成施加到(de)多路复用器的振动。

    APPARATUS AND METHOD FOR PRODUCING A FLAT-TOPPED FILTER RESPONSE IN A MULTIPLEX/DEMULTIPLEXER
    9.
    发明申请
    APPARATUS AND METHOD FOR PRODUCING A FLAT-TOPPED FILTER RESPONSE IN A MULTIPLEX/DEMULTIPLEXER 审中-公开
    用于在多路复用/解复用器中产生平坦过滤器响应的装置和方法

    公开(公告)号:WO2004015874A3

    公开(公告)日:2004-04-29

    申请号:PCT/US0323893

    申请日:2003-07-30

    CPC classification number: G02B6/2931 G02B6/2938

    Abstract: A (de)multiplexer (10) for use in optical communications systems for multiplexing and demultiplexing an optical signal consisting of optical channel(s) of different wavelength(s) (14, 16) includes a multiplex optical waveguide propagating a plurality of optical channels and a plurality of single channel optical waveguides, each propagating a single channel. Each of the waveguides has a receiving/transmitting end. A diffraction grating (22) is optically coupled between the multiplex optical waveguide and the single channel optical waveguides for diffracting an optical signal between the receiving/transmitting end of the multiplex optical waveguide and the receiving/transmitting end of the single channel optical waveguide. The grooves (24) of the diffraction (22) have spacing which varies according to an algorithm such that a portion of the optical signal diffracted by each groove (24) is offset in a direction of dispersion relative to the portions of the optical signal diffracted by the other surfaces to broaden the transmission band at the receiving/transmitting ends of the single channel and multiplex optical waveguides.

    Abstract translation: 用于对由不同波长(14,16)的光信道组成的光信号进行复用和解复用的光通信系统中的(de)多路复用器(10)包括多路光波导,其传播多个光信道 以及多个单通道光波导,每个传播单个通道。 每个波导具有接收/发送端。 衍射光栅(22)光耦合在多路复用光波导和单通道光波导之间,用于衍射多路光波导的接收/发射端与单通道光波导的接收/发射端之间的光信号。 衍射(22)的凹槽(24)具有根据算法而变化的间隔,使得由每个凹槽(24)衍射的光学信号的一部分相对于衍射的光信号的部分在色散方向上偏移 通过其他表面来扩大单通道的接收/发射端的传输频带和多路复用光波导。

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