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公开(公告)号：US5383197A
公开(公告)日：1995-01-17
申请号：US50165
申请日：1993-04-30
CPC分类号： H01S3/067 , H01S3/094003 , H01S3/173
摘要： An 850 nm laser and/or amplifier comprises a single mode fluoro-zirconate optical fibre (20) doped with Er.sup.3+. CW operation of the normally self-terminating lasing transition .sup.4 S.sub.3/2 to .sup.4 I.sub.13/2 is achieved by applying excitation energy at 801 nm which both maintains a population inversion between the lasing levels and also populates the upper lasing level by a two-stage process of excitation to the .sup.4 I.sub.9/12 level from the .sup.4 I.sub.15/2 ground state and then to .sup.2 H.sub.9/2 level by ESA.
摘要翻译： PCT No.PCT / GB91 / 01512 Sec。 371日期：1993年04月30日 102（e）日期1993年4月30日PCT 1991年9月5日PCT PCT。 出版物WO92 / 04750 日期：1992年3月19日。850nm激光和/或放大器包括掺杂有Er3 +的单模氟锆酸盐光纤（20）。 通过在801nm处施加激发能量来实现正常自终止激光跃迁4S3 / 2至4I13 / 2的CW操作，这两者都维持激光等级之间的总体反转，并且还通过两阶段的 从4I15 / 2基态激发到4I9 / 12电平，然后由ESA激发到2H9 / 2电平。
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公开(公告)号：US4881791A
公开(公告)日：1989-11-21
申请号：US288036
申请日：1988-12-19
CPC分类号： G02B6/02061 , G02F1/011 , H01S3/0675 , G02B6/29317 , H01S5/125
摘要： An optical device comprises an optical waveguide, such as a single mode optical fiber (11), underlying a first layer (2) of material, such as a thin film, which has a refractive index higher than the refractive index of the waveguide (11) and which forms a planar waveguide capable of supporting and guiding at least one propagation mode of a higher order than, but matching the phase velocity of, the propagation mode or modes in the underlying waveguide. A reflection diffraction grating (4) is provided on or adjacent to the surface of the first layer (2) remote from the waveguide (11). The arrangement is such that an optical signal which is coupled from the waveguide (11) into the first layer (2) is reflected by the reflection diffraction grating (4) and is coupled back into the waveguide.
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公开(公告)号：US4869567A
公开(公告)日：1989-09-26
申请号：US093528
申请日：1987-08-21
CPC分类号： G02B6/29332 , G02B6/14 , G02B6/2826 , G02B6/30 , G02F1/0118 , G02F1/1326 , G02F1/3131 , G02F1/3132
摘要： An optical coupler device comprises a waveguide structure underlying a first layer of material which has a refractive index higher than the effective refractive index of the waveguide structure and which is capable of supporting propagation modes of a higher order than, but matching the phase velocity of, the propagation mode or modes in the underlying waveguide structure, said layer thereby forming a wave guiding structure.
摘要翻译： PCT No.PCT / GB86 / 00802 Sec。 371日期1987年8月21日 102（e）日期1987年8月21日PCT PCT日期：1986年12月29日PCT公布。 出版物WO87 / 04260 日期1987年7月16日。一种光耦合器件包括在第一材料层下面的波导结构，其具有高于波导结构的有效折射率的折射率，并且能够支持高于 但是匹配下行波导结构中的传播模式或模式的相速度，所述层由此形成波导结构。
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4.发明授权Dielectric optical Fabry-Perot waveguide device and method for making and using same 失效介质光学法布里 - 珀罗波导器件及其制造和使用方法
公开(公告)号：US4859017A
公开(公告)日：1989-08-22
申请号：US026444
申请日：1987-03-19
CPC分类号： G02B6/29358 , H01S3/08 , H01S3/302
摘要： A selective filtering device for use in optical communications systems takes the form of a transversely coupled Fabry-Perot interferometer. One described embodiment comprises a first length of monomode optical fiber transversely coupled to a second fiber in a coupling region. One end of each fiber at opposite respective ends of the coupling region is provided with a suitable highly reflective surface, or example, an evaporated gold/aluminum deposit. In operation, a light input may be modified by the resonant cavity behavior of the Fabry-Perot cavity formed between the mirrored ends to provide filtered or enhanced outputs. The outputs may be further modified by alternative or additional light input via the ends of the fibers.
摘要翻译： PCT No.PCT / GB86 / 00430 Sec。 371日期1987年3月19日 102（e）1987年3月19日PCT PCT 1986年7月21日PCT公布。 第WO87 / 00699号公报 日期1987年1月29日。用于光通信系统的选择性滤波装置采用横向耦合法布里 - 珀罗干涉仪的形式。 一个所描述的实施例包括在耦合区域中横向耦合到第二光纤的单模光纤的第一长度。 每个纤维在耦合区域的相对两端的一端设置有合适的高反射表面，或者例如蒸发的金/铝沉积物。 在操作中，可以通过形成在镜像端之间的法布里 - 珀罗腔的谐振腔行为来修改光输入，以提供滤波或增强的输出。 输出可以通过纤维末端的替代或附加光输入进一步修改。
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公开(公告)号：US4452506A
公开(公告)日：1984-06-05
申请号：US211049
申请日：1980-11-28
CPC分类号： G02B6/3803 , Y10S359/90
摘要： A pair of optical fibres which are to be joined are located with their end portions in coupling elements one of which is transparent to light. The coupling elements are located such that the ends of the fibres are in approximate alignment. Light is transmitted along one fibre so that it is received by the fibre in the transparent coupling element. Light which is not coupled into the core of the fibre is sensed by a sensor and the relative position of the fibres is adjusted until the level of sensed light is a minimum. The sensing of the light is carried out at positions spaced angularly about the waveguide so that an indication of the direction of any misalignment is obtained. The coupling elements are then secured in this position. The adjustment of the fibres can be carried out using a linear translation stage and a microprocessor which controls the stage in accordance with signals from the sensor.
摘要翻译： 要被接合的一对光纤的端部位于耦合元件中，其中一个光对光是透明的。 耦合元件被定位成使得纤维的端部大致对准。 光沿着一根光纤传播，使得它被透明耦合元件中的光纤接收。 未耦合到光纤的芯中的光由传感器感测，并且调节光纤的相对位置直到感测光的电平为最小。 光的感测在与波导相对角度地间隔的位置处进行，从而获得任何未对准的方向的指示。 然后将耦合元件固定在该位置。 可以使用线性平移台和微处理器来执行光纤的调节，微处理器根据来自传感器的信号控制该级。
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公开(公告)号：US5157683A
公开(公告)日：1992-10-20
申请号：US659389
申请日：1991-03-05
摘要： The invention relates to laser systems of the type comprising optical fiber amplifiers. A laser system comprises a first laser 1 and a second laser 2. The second laser 2 is pumped at a first wavelength .lambda..sub.1 and caused to lase at a second wavelength .lambda..sub.2. The first laser 1 has absorption bands .lambda..sub.1 and .lambda..sub.2. The output .lambda..sub.2 of laser 2 and the remnant pump at .lambda..sub.1 are coupled and both are used to pump the first laser 1, thus causing laser 1 to lase at a third wavelength .lambda..sub.3.
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公开(公告)号：US4620789A
公开(公告)日：1986-11-04
申请号：US738711
申请日：1985-05-29
申请人： Colin A. Millar
发明人： Colin A. Millar
CPC分类号： G01B11/26
摘要： Features of the endface of a dielectric member are assessed by means of a reflected diffraction pattern.A plurality of light beams 6, 7 which intersect in a region containing the endface 8 can be used to generate a diffraction pattern 10 which subtends an angle of at least 180.degree. at the endface 8. Such a diffraction pattern 10 contains information about the endface 8 and may be used, in particular, to locate the plane in which the endface 8 lies.Embodiments of the invention find particular application in the measurement of endface angles of optical fibres.
摘要翻译： 通过反射衍射图来评估电介质构件端面的特征。 在包含端面8的区域中相交的多个光束6,7可以用于产生在端面8处对角至少180°的衍射图案10.这样的衍射图案10包含关于端面的信息 特别地，可以使用位于端面8所在的平面。 本发明的实施例在测量光纤的端面角度方面有特别的应用。
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公开(公告)号：US5369523A
公开(公告)日：1994-11-29
申请号：US59412
申请日：1993-05-11
CPC分类号： H01S3/094003 , H01S3/06754 , H01S3/094092 , H01S3/1608
摘要： A laser has a resonant cavity defined by a pair of mirrors (6, 10) butted to respective ends of a 3 m fluorozirconate optical fibre (14). The fibre (14) has a .DELTA.n of 0.014 and a cut-off wavelength of around 790 nm and is doped to about 500 ppm (weight) with erbium ions. An optical pump source (12 ) provides a pump signal at 971 nm which excites the erbium ions into the .sup.4 S.sub.3/2 energy level to provide lasing at about 546 nm. The laser may alternatively be pumped by a pump signal in the band 791 nm to 812 nm, preferably 801 nm. The pump source is preferably a high power semiconductor laser (16).
摘要翻译： 激光器具有由一对反射镜（6,10）限定的谐振腔，对接到3μm氟锆酸盐光纤（14）的相应端。 光纤（14）具有0.014的DELTA n和约790nm的截止波长，并用铒离子掺杂到约500ppm（重量）。 光泵浦源（12）在971nm处提供泵浦信号，其将铒离子激发到4S3 / 2能级以在约546nm处提供激光。 可选地，激光器可以通过791nm至812nm，优选为801nm的波段的泵浦信号来泵浦。 泵浦源优选地是大功率半导体激光器（16）。
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公开(公告)号：US5224116A
公开(公告)日：1993-06-29
申请号：US959473
申请日：1992-10-09
IPC分类号： H01S3/094
CPC分类号： H01S3/094003
摘要： A laser amplifier having an improved pump efficiency for a given pump power comprises a pump source (46) longitudinally coupled at a plurality of coupling points (47, 48, 49) to an optical fibre (41). By thus coupling the pump power into the fibre (41), a fraction of the pump power is applied to the fibre (41) at each of the coupling points (47, 48, 49). A significant improvement in pump efficiency may be achieved in this way.
摘要翻译： 对于给定的泵浦功率具有改进的泵效率的激光放大器包括在多个耦合点（47,48,49）处纵向耦合到光纤（41）的泵浦源（46）。 通过将泵浦功率耦合到光纤41中，在每个耦合点（47,48,49）处，一部分泵浦功率被施加到光纤41上。 可以以这种方式实现泵效率的显着提高。
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公开(公告)号：USRE33460E
公开(公告)日：1990-11-27
申请号：US359876
申请日：1989-05-31
申请人： Colin A. Millar
发明人： Colin A. Millar
IPC分类号： G01B11/26
CPC分类号： G01B11/26
摘要： Features of the endface of a dielectric member are assessed by means of a reflected diffraction pattern.A plurality of light beams 6, 7 which intersect in a region containing the endface 8 can be used to generate a diffraction pattern 10 which subtends an angle of at least 180.degree. at the endface 8. Such a diffraction pattern 10 contains information about the endface 8 and may be used, in particular, to locate the plane in which the endface 8 lies.Embodiments of the invention find particular application in the measurement of endface angles of optical fibres.
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