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    • 3. 发明申请
    • Segmented complex diffraction gratings
    • 分段复杂衍射光栅
    • US20050225860A1
    • 2005-10-13
    • US11144583
    • 2005-06-03
    • Thomas MossbergMichael MunroeAnders Grunnet-JepsenAlan JohnsonEric Maniloff
    • Thomas MossbergMichael MunroeAnders Grunnet-JepsenAlan JohnsonEric Maniloff
    • G02B5/18G02B6/34G02B27/42G02B27/44G02B27/46
    • G02B5/1823G02B5/1819G02B6/29311G02B27/4244H04J14/005
    • A structure (i.e. a segmented grating) which applies a designated complex-valued spectral filtering function to the input optical field and emits a filtered version of the input field in an output direction and a method for making such a structure. The segmented gratings fabricated in accordance with the present invention consist of a series of spatially distinct subgratings arrayed end to end. Each subgrating possesses a periodic array of diffraction structures (lines or more general elements). The overall transfer function of the segmented grating is determined by controlling (a) the spatial periodicity or frequency of each subgrating, (b) the amplitude of each subgrating,(c) the spacing between the last diffraction structure (or line) on each subgrating and the first diffraction structure (or line) of the successive subgrating, and (d) the optical path length and transparency through each subgrating, or each subgrating plus additional material layers utilized to control optical path length and transparency.
    • 一种结构(即,分段光栅),其向输入光场施加指定的复值频谱滤波函数,并且在输出方向上发射输入场的滤波版本以及用于制造这种结构的方法。 根据本发明制造的分段光栅由端到端排列的一系列空间上不同的亚格子组成。 每个子格栅具有衍射结构的周期性阵列(线或更一般的元素)。 通过控制(a)每个子格栅的空间周期或频率,(b)每个亚格子化的幅度,(c)每个亚格子化的最后衍射结构(或线)之间的间距来确定分段光栅的总传递函数 以及(d)通过每个亚格子化的光路长度和透明度,或每个亚光加上用于控制光程长度和透明度的附加材料层的第一衍射结构(或线)。
    • 7. 发明申请
    • Multiple-wavelength optical source
    • 多波长光源
    • US20050018951A1
    • 2005-01-27
    • US10923455
    • 2004-08-21
    • Thomas MossbergDmitri IazikovChristoph Greiner
    • Thomas MossbergDmitri IazikovChristoph Greiner
    • G02B5/32G02B6/34G02B6/12
    • G02B6/12009G02B5/32G02B6/12004G02B6/12007G02B6/12019G02B6/124G02B6/29326G02B6/29328G02B6/42G02B6/4214G02B2006/12164
    • An apparatus comprises: a planar optical waveguide having sets of locking diffractive elements and means for routing optical signals; and corresponding lasers. Lasers launch signals into the planar waveguide that are successively incident on elements of the locking diffractive element sets, which route fractions of the signals back to the lasers as locking feedback signals. The routing means route between lasers and output port(s) portions of those fractions of signals transmitted by locking diffractive element sets. Locking diffractive element sets may be formed in channel waveguides formed in the planar waveguide, or in slab waveguide region(s) of the planar waveguide. Multiple routing means may comprise routing diffractive element sets formed in a slab waveguide region of the planar waveguide, or may comprise an arrayed waveguide grating formed in the planar waveguide. The apparatus may comprise a multiple-wavelength optical source.
    • 一种装置包括:平面光波导,具有一组锁定衍射元件和用于路由光信号的装置; 和相应的激光器。 激光器将信号发射到平面波导中,其连续地入射到锁定衍射元件组的元件上,其将信号的一部分作为锁定反馈信号传送回激光器。 路由是指通过锁定衍射元件组传输的那些信号分数的激光与输出端口之间的路线。 锁定衍射元件组可以形成在平面波导中形成的沟道波导中,或者形成在平面波导的平板波导区域中。 多路由装置可以包括布置在平面波导的平板波导区域中形成的衍射元件集,或者可以包括形成在平面波导中的阵列波导光栅。 该装置可以包括多波长光源。
    • 9. 发明授权
    • Time-wavelength multiple access optical communication systems and methods
    • 时间波长多址光通信系统及方法
    • US06292282B1
    • 2001-09-18
    • US09354851
    • 1999-07-16
    • Thomas MossbergAnders Grunnet-JepsenJohn N. SweetserMichael Munroe
    • Thomas MossbergAnders Grunnet-JepsenJohn N. SweetserMichael Munroe
    • H04J400
    • H04B10/85G02B6/2861H04J14/005
    • Methods and apparatus for optical communication are disclosed. An optical data stream is encoded to produce an optical data stream having a predetermined time-wavelength spectrum. Two or more encoded data streams are combined in a transmission medium (e.g., optical fiber) and the combined data stream is decoded with decoders corresponding to the encoding of the data streams, producing decoded outputs. The decoded outputs include a portion corresponding to a selected data stream as well as a portion corresponding to unselected data streams (crosstalk). A nonlinear detector receives the decoded outputs and rejects crosstalk. Coders produce temporal delays and phase shifts specified by a time-wavelength code for, the spectral components of an input optical signal. Some coders convert optical signals encoded with a first time-wavelength code into an output corresponding to a second time-wavelength code. Temporal delays and phase shifts can be selected to compensate for dispersion in a transmission medium. Coherent coders are provided in which the phase shifts produced on the spectral components of an optical signal are controlled within about one half of the wavelength of the spectral component.
    • 公开了用于光通信的方法和装置。 光学数据流被编码以产生具有预定时间波长频谱的光学数据流。 在传输介质(例如光纤)中组合两个或多个编码数据流,并且使用与数据流的编码相对应的解码器解码组合数据流,从而产生解码的输出。 解码的输出包括对应于所选数据流的部分以及对应于未选择的数据流(串扰)的部分。 非线性检测器接收解码输出并拒绝串扰。 编码器由输入光信号的频谱分量产生由时间波长码指定的时间延迟和相移。 一些编码器将用第一时间波长码编码的光信号转换成对应于第二时间波长码的输出。 可以选择时间延迟和相移来补偿传输介质中的色散。 提供了相干编码器,其中在光信号的光谱分量上产生的相移被控制在光谱分量的波长的大约一半的范围内。
    • 10. 发明申请
    • Multimode planar waveguide spectral filter
    • 多模平面波导光谱滤波器
    • US20070034730A1
    • 2007-02-15
    • US11334039
    • 2006-01-17
    • Thomas MossbergChristoph GreinerDmitri Iazikov
    • Thomas MossbergChristoph GreinerDmitri Iazikov
    • F41G7/00
    • G03H1/0248G02B5/203G02B5/32G02B6/124G02B6/29325G02B2006/12164G03H1/0005
    • A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other dimensions therein. The waveguide supports multiple transverse modes. Each diffractive element set routes, between input and output ports, a diffracted portion of the optical signal propagating in the planar waveguide and diffracted by the diffractive elements. The diffracted portion of the optical signal reaches the output port as a superposition of multiple transverse modes. A multimode optical source may launch the optical signal into the planar waveguide, through the corresponding input optical port, as a superposition of multiple transverse modes. A multimode output waveguide may receive, through the output port, the diffracted portion of the optical signal. Multiple diffractive element sets may route corresponding diffracted portions of optical signal between one or more corresponding input and output ports.
    • 光谱滤波器包括具有至少一组衍射元件的平面光波导。 波导在一个横向尺寸上限制在其中两个其它维度上传播的光信号。 波导支持多种横向模式。 每个衍射元件组在输入和输出端口之间路由在平面波导中传播并被衍射元件衍射的光信号的衍射部分。 光信号的衍射部分作为多个横向模式的叠加到达输出端口。 多模光源可以通过相应的输入光端口将光信号发射到平面波导中,作为多个横向模式的叠加。 多模输出波导可以通过输出端口接收光信号的衍射部分。 多个衍射元件组可以在一个或多个相应的输入和输出端口之间路由对应的光信号衍射部分。