• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Slow light, fast light, and opto-atomic precision metrology VIII >Wideband Perfect Coherent Absorber based on White Light Cavity
【24h】

Wideband Perfect Coherent Absorber based on White Light Cavity

机译：基于白光腔的宽带完美相干吸收体

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Coherent Perfect Absorbers (CPAs) are optical cavities which can be described as time-reversed lasers where light waves that enter the cavity, coherently interfere and react with the intra-cavity losses to yield perfect absorption. In contrast to lasers, which benefit from high coherency and narrow spectral linewidths, for absorbers these properties are often undesirable as absorption at a single frequency is highly susceptible to spectral noise and inappropriate for most practical applications. Recently, a new class of cavities, characterized by a spectrally wide resonance has been proposed. Such resonators, often referred to as White Light Cavities (WLCs), include an intra-cavity superluminal phase element, designed to provide a phase response with a slope that is opposite in sign and equal in magnitude to that of light propagation through the empty cavity. Consequently, the resonance phase condition in WLCs is satisfied over a band of frequencies providing a spectrally wide resonance. WLCs have drawn much attention due to their attractiveness for various applications such as ultra-sensitive sensors and optical buffering components. Nevertheless, WLCs exhibit inherent losses that are often undesirable. Here we introduce a simple wideband CPA device that is based on the WLC concept along with a complete analytical analysis. We present analytical and FDTD simulations of a practical, highly compact (12μm), Silicon based WLC-CPA that exhibits a flat and wide absorption profile (40nm) and demonstrate its usefulness as an optical pulse terminator (＞35db isolation) and an all optical modulator that span the entire C-Band and exhibit high immunity to spectral noise.
机译：相干完美吸收体（CPA）是光学腔体，可以描述为时间反转激光器，其中进入腔体的光波相干干涉并与腔内损耗发生反应以产生完美吸收。与受益于高相干性和窄谱线宽的激光器相反，对于吸收器，这些特性通常是不希望的，因为在单个频率上的吸收极易受到谱噪声的影响，并且不适用于大多数实际应用。最近，已经提出了一种新型的腔体，其特征在于光谱范围的共振。这种谐振器通常称为白光腔（WLC），包括腔内超腔相位元件，设计用于提供相位响应，其斜率在符号上相反，并且其大小与通过空腔传播的光相同。因此，WLC中的谐振相位条件在提供频谱范围谐振的频率范围内得到满足。由于WLC对各种应用（例如超灵敏传感器和光学缓冲组件）具有吸引力，因此备受关注。然而，WLC表现出固有的损耗，这通常是不希望的。在这里，我们介绍一种基于WLC概念的简单宽带CPA设备以及完整的分析功能。我们提供实用，高度紧凑（12μm），基于硅的WLC-CPA的分析和FDTD仿真，该WLC-CPA具有平坦且宽的吸收剖面（40nm），并证明了其作为光脉冲终止器（> 35db隔离）和全光的有用性跨整个C波段的调制器，对频谱噪声显示出较高的抗扰性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号