Invention Grant
US09077454B2 Optical detector for detecting optical signal beams, method to detect optical signals, and use of an optical detector to detect optical signals
有权
用于检测光信号光的光检测器，检测光信号的方法，以及使用光检测器检测光信号
- Patent Title: Optical detector for detecting optical signal beams, method to detect optical signals, and use of an optical detector to detect optical signals
- Patent Title (中): 用于检测光信号光的光检测器，检测光信号的方法，以及使用光检测器检测光信号
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Application No.: US13412550Application Date: 2012-03-05
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Publication No.: US09077454B2Publication Date: 2015-07-07
- Inventor: Jingshi Li , Matthias Lauermann , Sven Schüle , Juerg Leuthold , Wolfgang Freude
- Applicant: Jingshi Li , Matthias Lauermann , Sven Schüle , Juerg Leuthold , Wolfgang Freude
- Applicant Address: DE Karlsruhe
- Assignee: KARLSRUHER INSTITUT FUR TECHNOLOGIE
- Current Assignee: KARLSRUHER INSTITUT FUR TECHNOLOGIE
- Current Assignee Address: DE Karlsruhe
- Agency: McDermott Will & Emery LLP
- Priority: EP11001826 20110304; EP11007144 20110902
- Main IPC: H04B10/61
- IPC: H04B10/61 ; H04B10/60 ; H04B10/67
Abstract:
An optical detector for detecting an optical signal beam (OSB) modulated in a way that it includes an in-phase and/or a quadrature component, includes: a polarization beam splitter arranged to split the OSB into two polarized OSBs; a non-polarization beam splitter arranged to further split each of the two polarized OSBs into two split polarized OSBs; at least one birefringent element providing a phase shift, the birefringent element being arranged in a path of at least one polarized OSB and/or in a path of at least one split polarized OSB so that an in-phase and quadrature phase offset between two split polarized OSBs originating from the same polarized OSB is formed in output signal beams; and at least two detection means arranged to receive at least one output signal beam that includes a in-phase and/or quadrature component of the OSB.
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