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26 条记录 (耗时 0.019 秒)

    Optical communication system having short period reflective Bragg gratings
    3.
    发明授权
    Optical communication system having short period reflective Bragg gratings 失效
    具有短周期反射布拉格光栅的光通信系统

    公开(公告)号：US5953471A

    公开(公告)日：1999-09-14

    申请号：US886783

    申请日：1997-07-01

    申请人： Rolando Patricio Espindola ,  Ashish Madhukar Vengsarkar ,  Jefferson Lynn Wagener

    发明人： Rolando Patricio Espindola ,  Ashish Madhukar Vengsarkar ,  Jefferson Lynn Wagener

    IPC分类号： G02B5/18 ,  G02B6/02 ,  G02B6/10 ,  G02B6/34

    CPC分类号： G02B6/02142 ,  G02B6/02085

    摘要： Embodiments of the invention include a method for fabricating Bragg reflector gratings using an amplitude mask and an amplitude mask apparatus for fabricating Bragg reflectors. The inventive Bragg reflector gratings have periodicities greater than conventional short period gratings but much less than conventional long period gratings. Short period, Bragg reflector gratings according to embodiments of the invention have periodicities, e.g., within the range from 1 .mu.m to 10 .mu.m. The fabrication method includes positioning an amplitude mask having appropriate slits formed therein over the photosensitive waveguide of interest and then illuminating the waveguide through the slits thereby photoinducing a periodic pattern of refractive index perturbations characteristic of a Bragg reflector. The short period, Bragg grating produced by the inventive amplitude mask is a reflective grating whose reflection characteristics approach approximately 99.99%. Reflective gratings fabricated in accordance with embodiments of the invention are useful in adding and dropping channels in wavelength division multiplexed systems and in applications such as laser stabilization and structural integrity sensing.

    摘要翻译： 本发明的实施例包括使用幅度掩模制造布拉格反射器光栅的方法和用于制造布拉格反射器的振幅掩模装置。 本发明的布拉格反射器光栅具有比常规短周期光栅更大的周期性，但远小于常规长周期光栅。 短周期，根据本发明的实施例的布拉格反射器光栅具有周期性，例如在1μm至10μm的范围内。 制造方法包括将在其上形成有适当狭缝的振幅掩模定位在感兴趣的感光波导上，然后通过狭缝照射波导，从而对布拉格反射器特性的折射率扰动的周期性图案进行光致感。 短周期，由本发明的振幅掩模产生的布拉格光栅是反射光栅，其反射特性接近99.99％。 根据本发明实施例制造的反射光栅可用于波分复用系统中的添加和删除通道以及激光稳定和结构完整性感测等应用中。

    Temperature-compensated rare earth doped optical waveguide amplifiers
    6.
    发明授权
    Temperature-compensated rare earth doped optical waveguide amplifiers 有权
    温度补偿稀土掺杂光波导放大器

    公开(公告)号：US06049414A

    公开(公告)日：2000-04-11

    申请号：US197396

    申请日：1998-11-20

    申请人： Rolando Patricio Espindola ,  Thomas Andrew Strasser ,  Jefferson Lynn Wagener ,  Paul Francis Wysocki

    发明人： Rolando Patricio Espindola ,  Thomas Andrew Strasser ,  Jefferson Lynn Wagener ,  Paul Francis Wysocki

    IPC分类号： H01S3/06 ,  G02B6/00 ,  G02B6/02 ,  H01S3/067 ,  H01S3/10 ,  H04B10/17 ,  G02B6/34 ,  H01S3/30 ,  H04J14/02

    CPC分类号： H04B10/2941 ,  H01S3/10023 ,  H01S2301/04 ,  H01S3/06758

    摘要： In accordance with the invention, a temperature-dependent rare earth doped waveguide optical amplifier is compensated by a temperature-dependent loss filter. The filter characteristics are designed to be temperature-dependent filters so that the gain characteristic of the amplifier is compensated over a practical operating temperature range. In essence, the amplifier comprises a length of optical waveguide for transmitting optical signals, a rare earth doped amplifying region in the waveguide for amplifying the transmitted optical signals, a pumping source for optically pumping the amplifying region, and a temperature-dependent loss filter. A typical design compensates an EFDA to a variation of less than 1 dB over a temperature range of -40.degree. C. to 85.degree. C. and a spectral range of at least 20 nm.

    摘要翻译： 根据本发明，温度依赖性稀土掺杂波导光放大器由温度依赖性损耗滤波器补偿。 滤波器特性被设计为温度依赖滤波器，使得放大器的增益特性在实际工作温度范围内得到补偿。 本质上，放大器包括用于传输光信号的一段光波导，用于放大透射光信号的波导中的稀土掺杂放大区域，用于光泵浦放大区域的泵浦源和温度依赖损耗滤波器。 典型的设计在-40℃至85℃的温度范围和至少20nm的光谱范围内将EFDA补偿为小于1dB的变化。

    Wavelength division multiplexed optical communication system having reduced short wavelength loss
    7.
    发明授权
    Wavelength division multiplexed optical communication system having reduced short wavelength loss 失效
    具有降低的短波长损耗的波分复用光通信系统

    公开(公告)号：US06304691B1

    公开(公告)日：2001-10-16

    申请号：US09338066

    申请日：1999-06-23

    申请人： Rolando Patricio Espindola ,  Jefferson Lynn Wagener

    发明人： Rolando Patricio Espindola ,  Jefferson Lynn Wagener

    IPC分类号： G02B628

    CPC分类号： G02B6/2932 ,  G02B6/022 ,  G02B6/29317 ,  G02B6/29374 ,  G02B6/2938 ,  G02B6/29394 ,  G02F1/0134 ,  G02F2201/307 ,  H04B10/2519 ,  H04J14/02

    摘要： In accordance with the invention, a WDM optical system comprises a transmission line with a net negative dispersion rather than the conventional net positive dispersion and a DCG with a positive dispersion rather than negative dispersion. With this design, short wavelengths entering the grating are reflected first before the long wavelengths, minimizing the path of short wavelengths within the grating and thereby avoiding short wavelength cladding loss. In advantageous embodiments, the DCG compensates for both the net negative dispersion and dispersion slope of at least two signal channels and preferably of all signal channels.

    摘要翻译： 根据本发明，WDM光学系统包括具有净负色散而不是常规净正色散的传输线和具有正色散而不是负色散的DCG。 通过这种设计，进入光栅的短波长首先在长波长之前被反射，使光栅内短波长的路径最小化，从而避免短波长包层损耗。 在有利的实施例中，DCG补偿至少两个信号通道的净负色散和色散斜率，并优选地补偿所有信号通道。

    Internally modulated coupled cavity fiber lasers
    8.
    发明授权
    Internally modulated coupled cavity fiber lasers 失效
    内部调制耦合腔光纤激光器

    公开(公告)号：US5936980A

    公开(公告)日：1999-08-10

    申请号：US953803

    申请日：1997-10-09

    申请人： Rolando Patricio Espindola ,  Daryl Inniss ,  Jefferson Lynn Wagener

    发明人： Rolando Patricio Espindola ,  Daryl Inniss ,  Jefferson Lynn Wagener

    IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/23 ,  H01S3/30

    CPC分类号： H01S3/0675 ,  H01S3/094003 ,  H01S3/09408 ,  H01S3/2383

    摘要： Laser apparatus for delivering optical power to an output port comprises first and second fiber lasers having at least partially overlapping cavity resonators. In one state the lasers are phase locked; in another they are not. An intracavity polarization transformer (e.g., a polarization modulator or a segment of PMF) determines the phase state of the apparatus. In each state the reflectivity of a reflector common to the lasers determines the amount of optical power which is delivered to the output port. In one embodiment the apparatus has a plurality of output ports to which separate utilization devices are coupled. The phase state of the lasers and the reflectivity of the common reflector determines how the optical power is allocated among the devices.

    摘要翻译： 用于将光功率传送到输出端口的激光装置包括具有至少部分重叠的腔谐振器的第一和第二光纤激光器。 在一个状态下，激光器是相位锁定的; 在另一个他们不是。 腔内偏振变换器（例如，偏振调制器或PMF的段）确定装置的相位状态。 在每个状态下，激光器共同的反射器的反射率决定了输送到输出端口的光功率量。 在一个实施例中，装置具有多个输出端口，单独的利用装置耦合到该输出端口。 激光器的相位状态和公共反射器的反射率决定了光功率如何在器件之间分配。