- 1、本文档共94页,可阅读全部内容。
- 2、原创力文档(book118)网站文档一经付费(服务费),不意味着购买了该文档的版权,仅供个人/单位学习、研究之用,不得用于商业用途,未经授权,严禁复制、发行、汇编、翻译或者网络传播等,侵权必究。
- 3、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。如您付费,意味着您自己接受本站规则且自行承担风险,本站不退款、不进行额外附加服务;查看《如何避免下载的几个坑》。如果您已付费下载过本站文档,您可以点击 这里二次下载。
- 4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等,请点击“版权申诉”(推荐),也可以打举报电话:400-050-0827(电话支持时间:9:00-18:30)。
- 5、该文档为VIP文档,如果想要下载,成为VIP会员后,下载免费。
- 6、成为VIP后,下载本文档将扣除1次下载权益。下载后,不支持退款、换文档。如有疑问请联系我们。
- 7、成为VIP后,您将拥有八大权益,权益包括:VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
- 8、VIP文档为合作方或网友上传,每下载1次, 网站将根据用户上传文档的质量评分、类型等,对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档
查看更多
Abstl.actThe
Abstl.act
The Optical-Fiber Interferometer has been widely used in signal detection.This thesis mainly focus on modulation·-demodulation technique of the Optical--Fiber Interferometer,especially the core technique of Lock-In demodulation.In this thesis, several double beam Optical-Fiber Interferometers are studied.By searching their basic s咖ctu:res and principles,the basic generality of their demodulation is found and
an analog—digital mixed demodulation system is designed and implemented.In this thesis,this demodulation system is used in an open—loop Sagnac Optical-Fiber
Interferometer system.The demodulation results are got by experiments and The
output datas are analized.
The double beam Optical—Fiber Interferometers have some characteristics:their output signal has a form of 1+k cos$.This output is periodical and has a nonlinearity with the input.When the demodulation result gets the special points of different periods of≯,or different quadrants of≯,some tests must be implemented to check that if an error result will be given by the demodulation system.Using the
optical—Fiber Interferometer for this test,the design of Testing Scheme is very
complex,and need huge amount of test work.
An integrate circuit chip is used to design a Virtual optical—Fiber Interferometer.The Virtual Optical-Fiber Interferometer has a simple circuit structure and can instead the optical structure of the double beam Optical·Fiber Interferometers to generate the output electronic signals with hi曲stability and high precision.It can
be used to test the special points easily by adjust the input reference voltage.In this experiment,a virtual Sagnac Optical—Fiber Interferometer is designed and used to test the analog-digital mixed demodulation system.This virtual Sagnac Optical—Fiber Interferometer is also tested in experiment.
The experimental results indicate that the zero drift of the analog—digital demodulation system is(1.5526 1 0一)。;Tested by this demodulation sy
您可能关注的文档
- 桂西南2种不同更新方式桉树人工林生长及其经济效益的研究-森林培育学专业论文.docx
- 固定化谷氨酸脱羧酶的制备与酶学性质分析-植物学专业论文.docx
- 管理层收购的理论及实务研究-技术经济及管理专业论文.docx
- 管理层收购的理论及实务分析-技术经济及管理专业论文.docx
- 光活性聚合物微球制备及其表面光引发改性研究-材料科学与工程专业论文.docx
- 光伏发电系统最大功率点跟踪控制研究-电气工程专业论文.docx
- 广西恭城--栗木断裂带的构造分析-矿产普查与勘探专业论文.docx
- 海岱地区史前合葬墓研究-考古学及博物馆学专业论文.docx
- 固定化菌糠吸附剂对镉污染废水的深度净化-生物学;微生物学专业论文.docx
- 含过渡金属的富Al三元合金相的形成规律-材料物理与化学专业论文.docx
文档评论(0)