公开(公告)号：US20090317928A1

公开(公告)日：2009-12-24

申请号：US12486796

申请日：2009-06-18

申请人： Christopher W. Smelser ,  Stephen J. Mihailov ,  Dan Grobnic ,  Ping Lu ,  Robert B. Walker ,  Gino Cuglietta ,  Haimin Ding ,  Xiaoli Dai

发明人： Christopher W. Smelser ,  Stephen J. Mihailov ,  Dan Grobnic ,  Ping Lu ,  Robert B. Walker ,  Gino Cuglietta ,  Haimin Ding ,  Xiaoli Dai

IPC分类号： H01L21/00

CPC分类号： G02B6/13 ,  G02B6/02114 ,  G02B6/02138

摘要： A method of producing a thermally stable grating allows the grating to be placed in environments where temperatures reach 1000° C. and where the grating is relatively stable and has very low loss from scatter. These gratings have spectral characteristics that allow them to be concatenated so as to form a sensor array. The method requires a step of lowering the characteristic intensity threshold of a waveguide by at least 25%, followed by irradiating the waveguide with femtosecond pulses of light having a sufficient intensity and for a sufficient duration to write the grating so that at least 60% of the grating remains after exposures of at least 10 hours at a temperature of at least 1000° C. Pre-writing a Type I grating before writing a minimal damage Type II grating lowers the characteristic threshold of the waveguide so that a stable low damage type II grating can be written; alternatively providing a hydrogen or deuterium loaded waveguide before writing the grating lowers the characteristic threshold of the waveguide.

摘要翻译： 制造热稳定光栅的方法允许将光栅置于温度达到1000℃的环境中，并且其中光栅相对稳定并具有非常低的散射损失。 这些光栅具有允许它们被级联以形成传感器阵列的光谱特性。 该方法需要将波导的特征强度阈值降低至少25％的步骤，随后用具有足够强度的飞秒脉冲照射波导并持续足够的持续时间来写入光栅，使得至少60％的 在至少1000℃的温度下，光栅保持至少10小时的曝光。在写入最小损伤II型光栅之前预写I型光栅降低了波导的特征阈值，使得稳定的低损伤II型 光栅可写; 或者在写入光栅之前提供加氢或氘负载的波导降低波导的特征阈值。

公开(公告)号：US08272236B2

公开(公告)日：2012-09-25

申请号：US12486796

申请日：2009-06-18

申请人： Christopher W. Smelser ,  Stephen J. Mihailov ,  Dan Grobnic ,  Ping Lu ,  Robert B. Walker ,  Gino Cuglietta ,  Haimin Ding ,  Xiaoli Dai

发明人： Christopher W. Smelser ,  Stephen J. Mihailov ,  Dan Grobnic ,  Ping Lu ,  Robert B. Walker ,  Gino Cuglietta ,  Haimin Ding ,  Xiaoli Dai

IPC分类号： C03C25/00

CPC分类号： G02B6/13 ,  G02B6/02114 ,  G02B6/02138

摘要： A method of producing a thermally stable grating allows the grating to be placed in environments where temperatures reach 1000° C. and where the grating is relatively stable and has very low loss from scatter. These gratings have spectral characteristics that allow them to be concatenated so as to form a sensor array. The method requires a step of lowering the characteristic intensity threshold of a waveguide by at least 25%, followed by irradiating the waveguide with femtosecond pulses of light having a sufficient intensity and for a sufficient duration to write the grating so that at least 60% of the grating remains after exposures of at least 10 hours at a temperature of at least 1000° C. Pre-writing a Type I grating before writing a minimal damage Type II grating lowers the characteristic threshold of the waveguide so that a stable low damage type II grating can be written; alternatively providing a hydrogen or deuterium loaded waveguide before writing the grating lowers the characteristic threshold of the waveguide.

摘要翻译： 制造热稳定光栅的方法允许将光栅置于温度达到1000℃的环境中，并且其中光栅相对稳定并具有非常低的散射损失。 这些光栅具有允许它们被级联以形成传感器阵列的光谱特性。 该方法需要将波导的特征强度阈值降低至少25％的步骤，随后用具有足够强度的飞秒脉冲照射波导并持续足够的持续时间来写入光栅，使得至少60％的 在至少1000℃的温度下，光栅保持至少10小时的曝光。在写入最小损伤II型光栅之前预写I型光栅降低了波导的特征阈值，使得稳定的低损伤II型 光栅可写; 或者在写入光栅之前提供加氢或氘负载的波导降低波导的特征阈值。