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公开(公告)号：US06345134B1
公开(公告)日：2002-02-05
申请号：US09101732
申请日：1999-03-01
IPC分类号： G02B634
CPC分类号： G02B6/022 , G02B6/29322 , G02B6/29394 , G02B6/4226 , G02B6/4246
摘要： An optical device comprises an optical fibre device having wavelength-dependent optical characteristics mounted on a bimorph element operable to bend in response to an electrical control signal, so that the wavelength-dependent optical characteristics of the optical fibre device vary in response to bending of the bimorph element.
摘要翻译： 光学装置包括具有安装在双压电晶片上的波长相关光学特性的光纤器件，可操作以响应于电控制信号而弯曲，使得光纤器件的波长相关光学特性响应于 双压电晶元件。
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公开(公告)号：US5172382A
公开(公告)日：1992-12-15
申请号：US651008
申请日：1991-02-05
CPC分类号： H01S5/1071 , H01S3/106 , H01S3/107 , H01S5/14
摘要： Polarization self-modulation of a laser produces high-frequency optical modulation without the use of high-speed electronics. This is accomplished by inserting into a laser cavity a polarization converter, which rotates the polarization of the laser light periodically as the light passes through the converter as it circulates in the cavity. The frequency of the modulation is determined by the cavity length. In one configuration, a quarter-wave retardation plate is used as the intracavity polarization converter in a Fabry-Perot laser. In a second embodiment, the converter is an electro-optic crystal which acts as an electronically-controllable half-wave retardation plate.
摘要翻译： 激光器的极化自调制可以在不使用高速电子设备的情况下产生高频光调制。 这通过在激光腔中插入偏振转换器来实现，该偏振转换器当光在腔中循环时通过转换器周期性地旋转激光的偏振。 调制频率由腔长决定。 在一种配置中，在法布里 - 珀罗激光器中使用四分之一波长的相位差板作为腔内偏振转换器。 在第二实施例中，转换器是用作电子可控半波延迟板的电光晶体。
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3.发明授权Optical fibre grating and optical fiber transmission system using such optical fiber grating 有权光纤光栅和光纤传输系统采用这种光纤光栅公开(公告)号：US06574394B1
公开(公告)日：2003-06-03
申请号：US09242722
申请日：1999-09-30
申请人： Richard Ian Laming , Wei-Hung Loh
发明人： Richard Ian Laming , Wei-Hung Loh
IPC分类号： G02B634
CPC分类号： G02B6/02109 , G02B6/02085 , G02B6/274 , G02B6/2746 , G02B6/278 , G02B6/29319 , G02B6/29394
摘要： An optical fiber transmission system includes an optical transmitter for generating light; a dispersive optical fiber link optically coupled to the optical transmitter, for transmitting the light generated by the optical transmitter; and a chirped optical fiber grating, optically coupled to the optical transmitter and to the dispersive optical fiber link, for providing at least a partial dispersion compensation to the light generated by the optical transmitter, before the light is transmitted in the dispersive optical fiber link; the chirped optical fiber grating including a polarization-maintaining optical fiber having a chirped refractive index variation
摘要翻译： 光纤传输系统包括用于发光的光发射机; 光耦合到所述光发射机的色散光纤链路，用于发射由所述光发射机产生的光; 以及啁啾光纤光栅，光耦合到光发射机和分散光纤链路，用于在光在分散光纤链路中传输光之前，为由光发射机产生的光提供至少部分色散补偿; 啁啾光纤光栅包括具有啁啾折射率变化的偏振保持光纤
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公开(公告)号：US06476949B1
公开(公告)日：2002-11-05
申请号：US09125649
申请日：1999-04-07
IPC分类号： H04B1000
CPC分类号： G02B6/2932 , G02B6/29394 , H04B10/2519 , H04B2210/254
摘要： An optical transmission apparatus for transmission of optical signals at an optical wavelength of about 1550 nanometers. The optical transmission apparatus includes a single mode optical fiber link formed of optical fiber having substantially zero dispersion at an optical wavelength of about 1300 nanometers and a dispersion of about 17 picoseconds per nanometer-kilometer at an optical wavelength of about 1500 nanometers. Further, at least one dispersion compensating chirped optical fiber grating is coupled to the optical fiber link, the aggregate dispersion of the at least one dispersion compensating chirped optical fiber grating substantially compensating for the dispersion of the optical fiber link. Further, the at least one dispersion compensating chirped optical fiber grating is coupled at respective positions substantially symmetrically disposed about the longitudinal center of the optical fiber link.
摘要翻译： 一种光传输装置，用于在大约1550纳米的光波长下传输光信号。 光传输装置包括由光纤形成的单模光纤链路，光纤在大约1300纳米的光波长下具有基本上为零的色散，并且在约1500纳米的光波长下具有约17皮秒/纳米公里的分散。 此外，至少一个色散补偿啁啾光纤光栅耦合到光纤链路，所述至少一个色散补偿啁啾光纤光栅的聚集色散基本上补偿了光纤链路的色散。 此外，至少一个色散补偿啁啾光纤光栅在大致对称地围绕光纤链路的纵向中心设置的位置处耦合。
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公开(公告)号：US5930435A
公开(公告)日：1999-07-27
申请号：US737985
申请日：1997-05-01
CPC分类号： H01S3/06708 , G02F1/3523 , H01S5/146 , G02B2006/2839 , G02F2201/02 , G02F2202/06 , G02F2203/055 , H01S3/06737 , H01S3/0675 , H01S3/06754 , H01S3/08022 , H01S3/08027 , H01S5/141
摘要： Passive, self-adjusting and tracking optical wavelength filters are described. The filters are absorptive and can be of either transmissive or reflective type. The filters comprise an unpumped doped optical waveguide configured so that signals of different wavelength are spatially decoupled to some extent. The self-adjustment of the filter centre wavelength is achieved by the combined effects of the power-dependent saturable absorption, provided by an appropriate dopant, and partial longitudinal hole burning provided by the spatial decoupling of the different wavelengths. External cavity lasers using this type of filter in the external cavity are also described. This external cavity configuration can provide stable single frequency operation of, for example, a semiconductor laser. By using a saturable absorber for the external cavity (e.g. an erbium doped fibre), longitudinal mode-hopping can be suppressed, ensuring single frequency operation.
摘要翻译： PCT No.PCT / GB95 / 01141 Sec。 371日期1997年5月1日 102（e）日期1997年5月1日PCT提交1995年5月19日PCT公布。 公开号WO95 / 32451 1995年11月30日，描述了无源自调整和跟踪光波长滤波器。 过滤器是吸收性的，并且可以是透射型或反射型。 滤波器包括一个未使用的掺杂光波导，其被配置成使得不同波长的信号在一定程度上在空间上解耦。 通过由适当的掺杂剂提供的功率依赖的可饱和吸收和通过不同波长的空间去耦提供的部分纵向孔燃烧的组合效应来实现滤波器中心波长的自调节。 还描述了在外腔中使用这种类型的滤波器的外腔激光器。 该外部空腔配置可以提供例如半导体激光器的稳定的单频操作。 通过使用用于外部空腔的可饱和吸收体（例如掺铒光纤），可以抑制纵向跳跃，确保单频操作。
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公开(公告)号：US6072926A
公开(公告)日：2000-06-06
申请号：US952303
申请日：1998-04-16
CPC分类号： G02B6/02152 , G02B6/02138 , G02B6/02085
摘要： A method of forming optical waveguide gratings, such as in-fiber gratings, is described. The gratings are formed optically, with a phase mask being scanned by a writing laser beam to generate the grating pattern. The waveguide and phase mask are moved with respect to one another during the writing process, to vary the grating properties along the length of the grating. Relative movement in a single direction provides a chance of grating pitch, and so can be used to fabricate chirped or multi-wavelength gratings. Bi-directional dither alters the strength of the grating, and so can be used to fabricate apodised gratings.
摘要翻译： PCT No.PCT / GB96 / 01154 Sec。 371日期：1998年4月16日 102（e）日期1998年4月16日PCT提交1996年5月14日PCT公布。 第WO96 / 36895号公报 日期：1996年11月21日描述了一种形成诸如光纤内光栅的光波导光栅的方法。 光栅被光学地形成，相位掩模被写入激光束扫描以产生光栅图案。 波导和相位掩模在写入过程中相对于彼此移动，以沿着光栅的长度改变光栅特性。 在单个方向上的相对运动提供光栅间距的机会，因此可用于制造啁啾或多波长光栅。 双向抖动改变光栅的强度，因此可用于制造变迹光栅。
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7.发明授权Interleaved sampled and chirped optical waveguide gratings for WDM channel operations and resulting devices 有权用于WDM通道操作和所得器件的交错采样和啁啾光波导光栅公开(公告)号：US06317539B1
公开(公告)日：2001-11-13
申请号：US09398372
申请日：1999-09-17
申请人： Wei-Hung Loh , Feng-Qing Zhou , Jing-Jong Pan
发明人： Wei-Hung Loh , Feng-Qing Zhou , Jing-Jong Pan
IPC分类号： G02B634
CPC分类号： G02B6/2932 , G02B6/29383 , H04B10/25073 , H04B10/2519 , H04J14/02 , H04J14/0206
摘要： The present invention provides for an optical waveguide device comprising a gratings, primarily in the form of fiber Bragg gratings, which are sampled, interleaved and chirped to achieve different functions. By interleaving sampled fiber Bragg gratings, each with a grating period which differs from the others by an amount corresponding to a multiple of a channel spacing, a predetermined and useful optical spectrum can be produced for the optical waveguide device. By making the sample periods for the fiber Bragg gratings different from each other, the resulting reflection spectrum has missing reflection peaks. A bandpass filter can be effectively created. Furthermore, by discretely varying the grating periods of sampled fiber Bragg gratings at intervals along the optical fiber containing the gratings, a more uniform optical spectrum is produced for the optical waveguide device. Finally, by chirping the sampling function of a sampled and chirped fiber Bragg grating, compensation for both dispersion and dispersion slope of a transmission fiber can be achieved.
摘要翻译： 本发明提供了一种光波导器件，其包括主要以光纤布拉格光栅形式的光栅，其被采样，交错和啁啾以实现不同的功能。 通过对采样的光纤布拉格光栅进行交织，每个具有与其他光栅周期不同的光栅周期与对应于信道间隔的倍数的量，可以为光波导器件产生预定和有用的光谱。 通过使光纤布拉格光栅的采样周期彼此不同，所得到的反射光谱具有缺失的反射峰。 可以有效地创建带通滤波器。 此外，通过沿着包含光栅的光纤的间隔离散地改变采样的光纤布拉格光栅的光栅周期，对于光波导器件产生更均匀的光谱。 最后，通过啁啾采样和啁啾光纤布拉格光栅的采样功能，可以实现传输光纤的色散和色散斜率的补偿。
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