| 近红外可调式磁光隔离器 |
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| 引用本文： | 虞志强,宋慧德,张冬喜,刘公强,刘湘林,傅方耀.近红外可调式磁光隔离器[J].中国激光,1990,17(1):18-22. |
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| 作者姓名： | 虞志强 宋慧德 张冬喜 刘公强 刘湘林 傅方耀 |
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| 作者单位： | 上海交通大学应用物理系
(虞志强，宋慧德，张冬喜，刘公强)，中国科学院上海冶金研究所
(刘湘林)，中国科学院上海冶金研究所(傅方耀) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 研制了近红外可调式磁光隔离器。计算了亚铁磁性材料磁光旋转的色散关系;设计了可调式磁场系统。有效地改善了磁光晶体的温度特性,外界强磁场和时间老化等因素对磁光隔离器性能的影响;降低了晶体加工的精度要求,提高了磁光隔离器的实用价值。在入射光波长1.3μm和室温条件(27～25℃)下进行了器件性能测试,获得了正向插入损耗<1.8dB,反向隔离比>29dB的实验结果。
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| 关 键 词： | 磁光隔离器 Faraday旋转器 可调式磁场系统 |
| 收稿时间： | 1988/4/15 |
Adjustable magneto-optical isolator in near-infrared region |
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| Yu Zhiqiang,Song Huide,Zhang Dongxi,Liu Gongqiang.Adjustable magneto-optical isolator in near-infrared region[J].Chinese Journal of Lasers,1990,17(1):18-22. |
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| Authors: | Yu Zhiqiang Song Huide Zhang Dongxi Liu Gongqiang |
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| Abstract: | A new adjustable magneto-optical isolator in near-infrared region is repotod. Based on the theoretical analysis an adjustable magnetic field system is designed for 45° Faraday rotator, getting a 1.0°-1.5° adjustable region under the condition of saturation, by which the characteristics of magneto-optical isolator are improved effectively that are influenced by the temperature characteristics of magneto-optical crystal, strong external magnetic firld, ageing effect of device and so on. The experimental results are obtained at 1.3 μm and at room temperature (T=25 ℃). Its insertion loss is less than 1.8 dB and isolation is over 29 dB. |
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| Keywords: | magneto-optical isolator Faraday rotator modifiable magnetic field system |
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