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51. 外观设计

USD713751S1 Optical fiber inspection probe 有权
标题翻译：光纤检测探头
公开(公告)号：USD713751S1
公开(公告)日：2014-09-23
申请号：US29460843
申请日：2013-07-16
申请人： Exfo Inc.
设计人： Sebastien Nadeau

52. 发明授权

US08482725B2 Method and apparatus for identification of multiple fibers using an OTDR 有权
标题翻译：使用OTDR识别多根纤维的方法和装置
公开(公告)号：US08482725B2
公开(公告)日：2013-07-09
申请号：US12081985
申请日：2008-04-24
申请人： Stéphane Perron , Bernard Ruchet , Michel Leblanc
发明人： Stéphane Perron , Bernard Ruchet , Michel Leblanc
IPC分类号： G01N21/00
CPC分类号： G01M11/3136 , G01M11/3118
摘要： In order to simplify and expedite identification of fibers (DF1/1, . . . , DF2/4) in multi-fiber cables (DF1, DF2), a method of identifying each of a plurality of fibers includes the steps of launching light into each of the fibers using an OTDR and applying a unique signature to each resulting OTDR trace by means of an event feature box comprising signature-applying means (EB) connected to a distal end of the fibers. The resulting plurality of OTDR traces have different signatures, enabling identification of each of the fibers by detecting its signature in the corresponding OTDR trace.
摘要翻译：为了简化并加快在多纤维电缆（DF1，DF2）中的纤维（DF1 / 1，...，DF2 / 4）的识别，识别多根纤维中的每一根的方法包括以下步骤：将光发射到每个纤维使用OTDR，并且通过包括连接到纤维的远端的签名施加装置（EB）的事件特征框对每个所得到的OTDR迹线应用唯一的签名。所得到的多个OTDR迹线具有不同的签名，能够通过检测其在相应OTDR迹线中的签名来识别每个光纤。

53. 发明授权

US08364034B2 In-band optical noise measurement using differential polarization response 有权
标题翻译：使用差分极化响应的带内光学噪声测量
公开(公告)号：US08364034B2
公开(公告)日：2013-01-29
申请号：US12859648
申请日：2010-08-19
申请人： Gang He , Normand Cyr , Daniel Gariepy
发明人： Gang He , Normand Cyr , Daniel Gariepy
IPC分类号： H04B10/08
CPC分类号： H04B10/07953
摘要： A method comprises: acquiring, for a number nSOP of varied State-Of-Polarization analysis conditions of the input optical signal, nSOP polarization-analyzed optical spectrum traces; mathematically discriminating said signal contribution from said noise contribution within said optical signal bandwidth using said polarization-analyzed optical spectrum traces, said mathematically discriminating comprising: obtaining a differential polarization response that is related to the optical spectrum of said signal contribution by a constant of proportionality; estimating the constant of proportionality of a differential polarization response to the optical spectrum of said signal contribution; estimating the optical spectrum of said noise contribution from said input optical signal, within said optical signal bandwidth using said constant of proportionality and said differential polarization response; and determining said in-band noise parameter on said input optical signal from the mathematically discriminated noise contribution.
摘要翻译：一种方法包括：对于输入光信号的nSOP极化分析条件的nSOP数值，获取nSOP偏振分析光谱图; 使用所述经偏振分析的光谱轨迹，在所述光信号带宽内从所述噪声贡献中数学地识别所述信号贡献，所述数学鉴别包括：获得与所述信号贡献的光谱相关比例常数的差分偏振响应; 估计差分极化响应与所述信号贡献的光谱的比例常数; 使用所述比例常数和所述微分极化响应在所述光信号带宽内估计来自所述输入光信号的所述噪声贡献的光谱; 以及从所述数学鉴别的噪声贡献中确定所述输入光信号上的所述带内噪声参数。

54. 外观设计

USD960734S1 Portable test instrument 有权
公开(公告)号：USD960734S1
公开(公告)日：2022-08-16
申请号：US29761050
申请日：2020-12-07
申请人： EXFO Inc.
设计人： Olivier Patry

55. 外观设计

USD960733S1 Portable test instrument 有权
公开(公告)号：USD960733S1
公开(公告)日：2022-08-16
申请号：US29761042
申请日：2020-12-07
申请人： EXFO Inc.
设计人： Olivier Patry

56. 外观设计

USD955244S1 Optical fiber inspection probe 有权
公开(公告)号：USD955244S1
公开(公告)日：2022-06-21
申请号：US29749181
申请日：2020-09-03
申请人： EXFO Inc.
设计人： Michael Simard , Manuel Leveille , Olivier Patry

57. 发明申请

US20220170816A1 OPTICAL FIBER ENDFACE INSPECTION MICROSCOPE HAVING A SWAPPABLE OPTICAL HEAD 有权
公开(公告)号：US20220170816A1
公开(公告)日：2022-06-02
申请号：US17455229
申请日：2021-11-17
申请人： EXFO Inc.
发明人： Olivier COTE , Aymen SALAHDDINE , Mario L'HEUREUX
IPC分类号： G01M11/00 , G06K9/78 , G06T7/00 , G02B21/02 , G02B6/36
摘要： There is provided an optical-fiber connector endface inspection microscope system for inspecting an endface of an optical-fiber connector. It comprises one or more image detector for capturing at least one image of the endface to be inspected; an objective lens system comprising a focusing lens for adjusting a focus of the objective lens system on the image detector and a fixed relay lens; a main housing structure enclosing the image detector and the focusing lens; and at least one interchangeable optical head releasably connectable to the main housing structure and enclosing the fixed relay lens, wherein the optical head is releasably connectable to an adapter tip for interfacing with the optical-fiber connector to be inspected.

58. 发明申请

US20220170815A1 OPTICAL FIBER ENDFACE INSPECTION MICROSCOPE HAVING A DUAL ILLUMINATION SOURCE 有权
公开(公告)号：US20220170815A1
公开(公告)日：2022-06-02
申请号：US17455225
申请日：2021-11-17
申请人： EXFO Inc.
发明人： Nicolas CARON , Olivier COTE , Mario L'HEUREUX
IPC分类号： G01M11/00 , G06T7/00 , H04N5/235 , H04N5/225 , G02B6/38 , G02B21/06 , G02B21/36
摘要： There are provided systems and methods for inspecting an endface of an optical-fiber connector using an optical-fiber connector endface inspection microscope system comprising one or more image detectors for capturing images over the whole endface to be inspected. An illumination system comprises two or more illumination sources disposed so as to illuminate respective regions over the connector endface and to prevent dark zones in the capture images. The illumination sources are activated in sequence, such that adjacent sources are never activated at the same time, and corresponding images captured in sequence, i.e., one after the other. In this case, it is also possible to activate the illumination sources in sequence, such that adjacent sources are never activated at the same time. Activating the illumination sources separately eliminates the illumination overlap and so eliminates the double image artifact. This allows for a more uniformly lit image with less dark spots.

59. 发明授权

US11340137B2 Method and system for multi-link connection testing 有权
公开(公告)号：US11340137B2
公开(公告)日：2022-05-24
申请号：US16722901
申请日：2019-12-20
申请人： EXFO Inc.
发明人： Michel Leclerc , Mario L'Heureux , Stephane Perron
IPC分类号： G01M11/00 , G02B6/38 , G01D5/353 , G01D5/34
摘要： There are provided techniques for characterizing and testing a cable routing connection configuration connection arrangement comprising a plurality of optical fiber links connected between at least a first connection device at a first end and a second multi-fiber connection device at a second end. Test light is injected into one or more of the optical fiber links via corresponding optical fiber ports of the first connection device. At least one image of the second multi-fiber connection device is captured. Test light exiting the optical fiber link(s) through optical fiber port(s) of the second multi-fiber connection device is imaged as light spot(s) in the captured image. Positions on the second multi-fiber connection device that corresponds to the optical fiber port(s) are determined based on a pattern of the light spot(s) in the captured image. In some implementations, the provided techniques allow detection or verification of cable routing connection configurations at multi-fiber distribution panels.

60. 发明授权

US11271641B1 OTDR method for end-to-end optical fiber link characterization 有权
公开(公告)号：US11271641B1
公开(公告)日：2022-03-08
申请号：US16740953
申请日：2020-01-13
申请人： EXFO Inc.
发明人： Stephane Perron
IPC分类号： H04B10/071 , G01M11/00
摘要： There is therefore provided an OTDR method for characterizing an optical fiber link, wherein a receive device comprising a reflective optical signature and a receive fiber is connected at a remote end of the optical fiber link under test. The reflective optical signature is detected using an OTDR acquisition and link continuity is verified. Because detection of the reflective optical signature rely on high-intensity reflective peaks of the reflective optical signature and not on RBS level, dynamic range constraints are relaxed and so is the averaging time. Advantageously, the method may be employed to detect the reflective optical signature, verify link continuity, measure total link length, measure total insertion loss and/or determine a polarity of a multi-fiber array cable link.

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