公开(公告)号：WO2007082387A1

公开(公告)日：2007-07-26

申请号：PCT/CA2007/000085

申请日：2007-01-22

Applicant: ITF LABORATORIES INC. ,  WETTER, Alexandre ,  SEGUIN, François ,  MARTINEAU, Lilian ,  FAUCHER, Mathieu

Inventor： WETTER, Alexandre ,  SEGUIN, François ,  MARTINEAU, Lilian ,  FAUCHER, Mathieu

IPC: G02B6/00 ,  G02B6/38 ,  G02B6/44

CPC classification number: G02B6/0218 ,  G02B6/14 ,  G02B6/2835 ,  G02B6/36 ,  G02B6/3636

Abstract: A package for an optical fiber device is disclosed. It has a high thermal conductivity packaging substrate surrounding the optical fiber device and has adhesive bonds at each end anchoring the optical fiber device to the substrate. The adhesive bonds are made of a material that has high transparency in damp heat as well as a high glass transition temperature and is capable of withstanding temperatures of over 1000C. The packaging substrate has a high absorption capacity and a CTE in relation to the CTE of the adhesive bond, such as to compensate for any variation in the adhesive bond due to temperature variations. This allows to limit mechanical stress in the optical fiber device within the package.

Abstract translation: 公开了一种用于光纤设备的封装。 它具有围绕光纤器件的高导热性封装基板，并且在每端将光纤器件固定到基板上具有粘合剂结合。 粘合剂粘合剂由湿热透明度高且玻璃化转变温度高且能够承受超过100℃的温度的材料制成。 封装基板具有与粘合剂粘合剂的CTE相关的高吸收容量和CTE，例如以补偿由于温度变化引起的粘合剂粘合的任何变化。 这可以限制封装内光纤器件的机械应力。

公开(公告)号：WO2007137429A1

公开(公告)日：2007-12-06

申请号：PCT/CA2007/000967

申请日：2007-05-31

Applicant: ITF LABORATORIES INC. ,  DU, Xin Ming

Inventor： DU, Xin Ming

IPC: G01N21/17 ,  G02B6/02

CPC classification number: G01N21/81 ,  G01N21/7703 ,  G01N2021/7716 ,  G01N2021/7773 ,  G02B6/02104 ,  G02B6/022

Abstract: A fiber Bragg grating humidity sensor transducer comprises an optical fiber having preferably two gratings. One of the grating is sensitive to humidity whereas the other optional grating is sensitive to temperature. The sensor therefore allows for a temperature compensated humidity measurement. The humidity sensitive grating is coated with a specific polymer. When the specific polymer, which is sensitive to humidity, absorbs water vapor, it expands. The expansion of the polymer coating develops a transverse strain in the grating area of the optical fiber. A direct relation between the amount of strain and humidity percentage can be translated. The sensitivity, the accuracy and the response time of the sensor are enhanced by a hydrofluoric acid (HF) thinning or etching of the humidity sensitive grating. The measurement of the humidity sensor is based on optical signal interrogation technology.

Abstract translation: 光纤布拉格光栅湿度传感器包括具有优选两个光栅的光纤。 其中一个光栅对湿度敏感，而另一个光栅对温度敏感。 因此，传感器允许进行温度补偿湿度测量。 湿度敏感光栅涂有特定的聚合物。 当对湿度敏感的特定聚合物吸收水蒸气时，会膨胀。 聚合物涂层的膨胀在光纤的光栅区域中产生横向应变。 应变量和湿度百分比之间的直接关系可以被翻译。 传感器的灵敏度，精度和响应时间可以通过湿度敏感光栅的氢氟酸（HF）稀释或蚀刻来增强。 湿度传感器的测量是基于光信号询问技术。

公开(公告)号：WO2007134453A2

公开(公告)日：2007-11-29

申请号：PCT/CA2007/000904

申请日：2007-05-23

Applicant: ITF LABORATORIES INC. ,  ZHOU, Changzun ,  ZHAO, Yunfei

Inventor： ZHOU, Changzun ,  ZHAO, Yunfei

CPC classification number: G02B6/02109 ,  G01D5/35303 ,  G01M11/3181

Abstract: This invention provides a method for measuring and monitoring the state of polarization (SOP) of a polarization maintaining (PM) fiber and the like using a narrowband fiber Bragg grating (FBG) written on the same. The PM fiber therefore comprises a first narrowband reference FBG which is used as a reference to measure and monitor the SOP of the PM fiber. Due to the birefringence properties of the PM fiber, the reference FBG will generally reflect two narrowband spectra, each having a central wavelength; one in the slow axis and one in the fast axis. By measuring the intensity of the reflected spectra in each axis and by tuning the fiber with a polarization controller, it is possible to adjust the fiber to a predetermined SOP. After having adjusted the PM fiber to a predetermined SOP, it is possible to accurately measure the optical properties of a second grating, or of another optical device, according to the predetermined SOP. The method of the present invention can also be advantageously used for accurate measurement of reflectivity.

Abstract translation: 本发明提供了一种使用写在其上的窄带光纤布拉格光栅（FBG）来测量和监测偏振维持（PM）光纤等的偏振状态（SOP）的方法。 PM纤维因此包括第一窄带参考FBG，其用作测量和监测PM光纤的SOP的参考。 由于PM光纤的双折射性质，参考光栅将通常反射两个窄带光谱，每个具有中心波长; 一个在慢轴上，一个在快轴上。 通过测量每个轴上反射光谱的强度并通过用偏振控制器调谐光纤，可以将光纤调节到预定的SOP。 在将PM光纤调节到预定的SOP之后，可以根据预定的SOP精确地测量第二光栅或另一光学装置的光学特性。 本发明的方法还可以有利地用于精确测量反射率。

公开(公告)号：WO2007134452A1

公开(公告)日：2007-11-29

申请号：PCT/CA2007/000903

申请日：2007-05-23

Applicant: ITF LABORATORIES INC. ,  HOU, Rujie ,  ZHAO, Yunfei ,  ZHOU, Changzun

Inventor： HOU, Rujie ,  ZHAO, Yunfei ,  ZHOU, Changzun

IPC: G02B5/18 ,  G02B6/02

CPC classification number: G02B6/02138 ,  G02B6/02123 ,  G02B6/02142

Abstract: This invention relates to a method and a system for writing fiber Bragg gratings (FBG) having apodized spectrum ("apodized FBG") on optical fibers. An amplitude modulation mask is placed between a focusing cylindrical lens and the optical fiber. By reducing the distance between the amplitude mask and the fiber, the present invention can minimize diffraction effects that may be induced by long propagation distance of a laser beam passing through a small and/or narrow aperture in the amplitude mask. The method and system of the present invention can be applied to write FBG with apodized spectrum with small amplitude mask to achieve full width at half maximum (FWHM) bandwidth (BW) wider than 1.2 nm and to achieve side lobe suppression ratio (SLSR) as high as 30 dB. These method and system generally increase the laser power efficiency of the laser used in FBG inscription and optimizes the grating index modulation profile.

Abstract translation: 本发明涉及一种在光纤上写入具有变迹光谱（“变迹FBG”）的光纤布拉格光栅（FBG）的方法和系统。 在聚焦柱面透镜和光纤之间放置振幅调制掩模。 通过减小幅度掩模和光​​纤之间的距离，本发明可以使通过振幅掩模中的小和/或窄孔径的激光束的长传播距离可能引起的衍射效应最小化。 本发明的方法和系统可以应用于具有小幅度掩模的变迹频谱的FBG，以实现宽于1.2nm的半高宽（FWHM）带宽（BW），并实现旁瓣抑制比（SLSR）为 高达30 dB。 这些方法和系统通常提高了FBG刻录中使用的激光器的激光功率效率，并优化了光栅索引调制曲线。

公开(公告)号：WO2007090272A1

公开(公告)日：2007-08-16

申请号：PCT/CA2007/000170

申请日：2007-02-06

Applicant: ITF LABORATORIES INC. ,  GONTHIER, François ,  GARNEAU, Marc ,  VACHON, Nelson

Inventor： GONTHIER, François ,  GARNEAU, Marc ,  VACHON, Nelson

IPC: G02B6/38 ,  G02B6/40

CPC classification number: G02B6/2856 ,  H01S3/094003

Abstract: A multimode fiber coupler has a structure in which a plurality of tapered pump fibers are coupled laterally to a multi-clad fiber, , such as a double clad fiber (DCF). Such coupler is produced by first forming a plurality of tapered pump fibers and positioning them around the multi-clad fiber, thus forming a fiber bundle. Then, the fiber bundle is twisted and fused so that the input pump fibers converge towards a waist and then diverge from it. The diverging portions of the pump fibers may be removed from the structure. Also, at the waist, the structure may be cleaved and the portion with the converging pump fibers is then spliced with a multi-clad fiber which is similar or identical to the one in the middle of the bundle.

Abstract translation: 多模光纤耦合器具有多个锥形泵浦光纤横向耦合到诸如双包层光纤（DCF）的多包层光纤的结构。 这种耦合器通过首先形成多个锥形泵浦纤维并将其定位在多包层纤维周围，从而形成纤维束来制造。 然后，纤维束被扭曲和熔化，使得输入泵纤维朝向腰部会聚，然后从其分开。 可以从结构中去除泵浦纤维的发散部分。 此外，在腰部，结构可能被切开，并且具有会聚的泵浦纤维的部分然后用与包裹中间的纤维类似或相同的多包层纤维拼接。

公开(公告)号：WO2007045082A1

公开(公告)日：2007-04-26

申请号：PCT/CA2006/001701

申请日：2006-10-17

Applicant: ITF LABORATORIES INC. ,  TREMBLAY, Julien

Inventor： TREMBLAY, Julien

IPC: G02B6/36 ,  C03B37/012 ,  G02B6/24

CPC classification number: G02B6/2835 ,  G02B6/2551

Abstract: The method uses capillary holes in a glass preform for precise positioning of the optical fibers in the manufacture of a coupler. The glass preform is preferably cylindrical and longitudinal capillary holes are made in it in a desired pattern. Optical fibers are inserted in the holes and the glass preform is heated and stretched in its middle section so that the fibers, from which coating has been removed, contact and are fused with the glass preform in this tapered section. Then the tapered section is cleaved to form a coupling end which is spliced with another fiber to form the coupler.

Abstract translation: 该方法在玻璃预制件中使用毛细孔，用于在制造耦合器时精确定位光纤。 玻璃预成型件优选为圆柱形，并且以期望的图案在其中制造纵向毛细孔。 将光纤插入孔中，玻璃预制件在其中间部分被加热和拉伸，使得已经除去涂层的纤维在该锥形部分中与玻璃预制件接触并熔融。 然后，锥形部分被切割以形成耦合端，其与另一光纤接合以形成耦合器。