发明名称 |
METHOD AND APPARATUS FOR CONTROLLING WAVEGUIDE BIREFRINGENCE BY SELECTION OF A WAVEGUIDE CORE WIDTH FOR A TOP CLADDING |
摘要 |
<p>A method and apparatus for controlling waveguide birefringence by selection of a waveguide core width for a tuned top clad is described herein. In one example, a dopant concentration within a top cladding material is between 3-6 % (wt.). Given a tuned top cladding composition, a width of the waveguide core is pre-selected such that birefringence is minimized, i.e., a zero, or near zero. The desirable width of the waveguide core is determined by calculating the distribution of stress in the top cladding over a change in temperature. From this distribution of stress, a relationship between the polarization dependent wavelength and variable widths of the waveguide in the arrayed waveguide grating are determined. This relationship determines a zero value, or near zero value, of polarization dependent wavelength for a given range of waveguide widths. Accordingly, the width of the waveguide may be selected such that the polarization dependent wavelength is minimized.</p> |
申请公布号 |
WO2007044010(A1) |
申请公布日期 |
2007.04.19 |
申请号 |
WO2005US36628 |
申请日期 |
2005.10.11 |
申请人 |
LIGHTWAVE MICROSYSTEMS CORPORATION;PARHAMI, FARNAZ;ZHAO, LIANG;ZHONG, FAN |
发明人 |
PARHAMI, FARNAZ;ZHAO, LIANG;ZHONG, FAN |
分类号 |
G02B6/10;G02B6/27;G02B6/34 |
主分类号 |
G02B6/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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