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1. 发明公开

EP1244894A4 DENSE WAVELENGTH DIVISION MULTIPLEXER UTILIZING AN ASYMMETRIC PASS BAND INTERFEROMETER 有权
标题翻译： DENSE WAVELENGHT DIVISION MULTIPLEXER MIT NUTZUNG EINES不相似的通带式干扰仪
公开(公告)号：EP1244894A4
公开(公告)日：2003-04-02
申请号：EP00957782
申请日：2000-08-24
申请人： AVANEX CORP
发明人： CAO SIMON X F , MAO XIAOPING
IPC分类号： G01J3/26 , G02B6/34 , H04B10/213 , H04J14/02 , G02B6/293 , G02B6/28 , G02B27/28
CPC分类号： H04J14/0213 , G01J3/26 , G02B6/2706 , G02B6/272 , G02B6/2773 , G02B6/29302 , G02B6/29358 , G02B6/29383 , G02B6/29386 , H04J14/0208 , H04J14/0209 , H04J14/0212
摘要： The present invention provides an improvement in the separation mechanism to be used in a dense wavelength division multiplexer. The separation mechanism in accordance with the present invention includes an asymmetric pass band interferometer. The interferometer includes a first glass plate optically coupled to a second glass plate, forming a space therebetween; a first reflective coating with a first reflectivity residing inside the space and on the first glass plate; a second reflective coating with a second reflectivity residing inside the space and on the second glass plate; a first waveplate with a first optical retardance residing inside the space; and a second waveplate with a second optical retardance, optically coupled to the first glass plate and residing outside the space, where a combination of values for the first reflectivity, the first optical retardance, and the second optical retardance effect a separation of channels in at least one optical signal into at least two sets, and where the at least two sets have asymmetrically interleaved pass bands. The asymmetric pass band interferometer in accordance with the present invention is capable of separating channels from signals with different data transfer rates. With the present invention, a maximum use of available bandwidth on an optical fiber may be accomplished. An added functionality of the asymmetric pass band interferometer of the present invention is the ability to facilitate an asymmetric or uneven add/drop function while also separating the channels.
摘要翻译：本发明提供了在密集波分多路复用器中使用的分离机构的改进。根据本发明的分离机构包括非对称通带干涉仪。干涉仪包括光学耦合到第二玻璃板的第一玻璃板，在其间形成空间; 具有位于所述空间内和所述第一玻璃板上的具有第一反射率的第一反射涂层; 具有驻留在所述空间内和所述第二玻璃板上的具有第二反射率的第二反射涂层; 位于该空间内的具有第一光学延迟的第一波片; 以及具有第二光学延迟的第二波片，光学耦合到第一玻璃板并且位于空间外部，其中用于第一反射率，第一光学延迟和第二光学延迟的值的组合影响在第将至少一个光信号转换成至少两组，并且其中至少两组具有不对称交错的通带。根据本发明的非对称通带干涉仪能够将信道与具有不同数据传输速率的信号分离。利用本发明，可以实现光纤上可用带宽的最大使用。本发明的不对称通带干涉仪的附加功能是在分离通道的同时促进不对称或不均匀的加/失功能的能力。

2. 发明公开

EP1368871A4 ELECTROABSORPTION MODULATED LASER 审中-公开
标题翻译：电吸收调制激光器
公开(公告)号：EP1368871A4
公开(公告)日：2007-06-27
申请号：EP02721407
申请日：2002-03-13
申请人： AVANEX CORP
发明人： LU HANH , SAHARA RICHARD T , RANDAL SALVATORE
IPC分类号： H01S5/026 , H01S5/10 , H01S5/12 , H01S5/20 , H01S5/22 , H01S5/223 , H01S5/32 , H01S5/343 , H01S5/50
CPC分类号： H01S5/12 , B82Y20/00 , H01S5/0265 , H01S5/1085 , H01S5/1203 , H01S5/1228 , H01S5/2004 , H01S5/2009 , H01S5/204 , H01S5/2063 , H01S5/209 , H01S5/2201 , H01S5/2213 , H01S5/2214 , H01S5/2231 , H01S5/3211 , H01S5/34306
摘要： An integrated electroabsorption modulated laser (EML) device (10) includes a distributed feedback (DFB) laser (12) and modulator (14). The DFB laser (12) includes an active layer (18) and a complex index grating (20). The modulator (14) includes an active layer (18). The EML device (10) includes a first electrical contact (46) over the DFB laser (12) and a second electrical contact (48) over the modulator (14). The ELM device (10) includes a stop etch layer (28) above the active layer (18) of both the DFB laser (12) and the modulator (14). An electroabsorption modulated partial grating laser (EMPGL) device includes a distributed feedback (DFB) laser, an amplifier and a modulator. An ion implantation region in the EML/EMPGL devices provides electrical isolation between the DFB laser/amplifier and the modulator.

3. 发明公开

EP1386428A4 THERMAL RIPPLE-COMPENSATING, GAIN-FLATTENING FILTER FOR AN OPTICAL AMPLIFIER 审中-公开
标题翻译： FILTER MIT KOMPENSATION DER THERMISCHEN WELLIGKEIT UNDVERSTÄRKUNGSVERFLACHUNGFÜREINEN OPTISCHENVERSTÄRKER
公开(公告)号：EP1386428A4
公开(公告)日：2004-07-14
申请号：EP02717632
申请日：2002-03-15
申请人： AVANEX CORP
发明人： BARTOLINI GLENN D , BHATIA VIKRAM , WIGLEY PETER G
IPC分类号： H01S3/067 , H01S3/30 , H04B10/12
CPC分类号： H01S3/06758 , H01S3/302 , H01S2301/04
摘要： An optical device including an optical amplifier (12) to amplify optical signals received through an optical input, and to supply the amplified optical signals from an optical output, and an optical filter component (20) to compensate for variations in the gain spectrum of the optical amplifier (12) that occur as a function of wavelength and operating temperature. The optical filter component includes a first optical filter (22) having an athermalized transmission spectrum and a second optical filter (24) having a transmission (or insertion loss) spectrum that varies as a function of operating temperature.
摘要翻译：一种光学装置，包括光学放大器（12）和光学滤波器部件（20），所述光学放大器（12）放大通过光学输入接收到的光学信号并且从光学输出提供放大的光学信号，以补偿光放大器（12）根据波长和工作温度而发生。滤光器部件包括具有无热化透射光谱的第一滤光器（22）和具有根据工作温度而变化的透射（或插入损耗）光谱的第二滤光器（24）。

4. 发明公开

EP1295369A4 WAVELENGTH SELECTABLE FIBER LASER SYSTEM 审中-公开
标题翻译：波长选择光纤激光装置，
公开(公告)号：EP1295369A4
公开(公告)日：2004-02-18
申请号：EP00941113
申请日：2000-04-24
申请人： AVANEX CORP
发明人： CONRADI JAN
IPC分类号： H01S3/10 , H01S3/06 , H01S3/067 , H01S3/08 , H01S3/094 , H01S3/23 , H04B10/02 , H04J14/00 , H04J14/02
CPC分类号： H01S3/067 , H01S3/08086 , H01S3/094061 , H01S3/09408 , H01S3/2383 , H01S3/2391
摘要： A fiber laser system (10) including multiple fiber lasers fabricated to emit at respective different wavelengths when optically pumped by radiation at a pump wavelength. A pump laser (30) emits the pump radiation and pumps one or more of the fiber lasers (12, 38). The outputs of the fiber lasers are recombined onto a transmission fiber, preferably for use in a wavelength-division multiplexing (WDM) (60) telecommunication system. In one set of embodiments, an optical switch switches (32, 41) the pump radiation to only one of the fiber lasers (12, 38). A second switch (41) controlled in correspondence to the first switch (32) or a passive combiner, preferably a wavelength-division multiplexer (60), directs the output of the lasing fiber to an optical output path. In another embodiment, the one pump laser (30) simultaneously pumps all the fiber lasers. One or more pump laser may be placed in parallel, and their outputs are combined. The parallel pump lasers (30) may either be individually activated for redundancy or simultaneously operated for higher power.

5. 发明公开

EP1076934A4 NONLINEAR INTERFEROMETER FOR FIBER OPTIC DENSE WAVELENGTH DIVISION MULTIPLEXER UTILIZING A PHASE DIFFERENTIAL METHOD OF WAVELENGTH SEPARATION 有权
标题翻译：非线性干涉仪通过相位差方法进行波长分离光纤密集波分复用复用器
公开(公告)号：EP1076934A4
公开(公告)日：2008-07-30
申请号：EP00939269
申请日：2000-02-07
申请人： AVANEX CORP
发明人： CAO SIMON X F
IPC分类号： G01J3/26 , G02B6/34 , G01B9/02
CPC分类号： G02B6/29302 , G01J3/26 , G02B6/2706 , G02B6/272 , G02B6/2773 , G02B6/29358 , G02B6/29383 , G02B6/29386
摘要： A nonlinear interferometer wavelength separation mechanism (400) for use in a dense wavelength division multiplexer is provided. The mechanism includes a first glass plate (480A) optically coupled to a second glass plate (480B), forming a space therebetween; a mechanism (430) for introducing a phase shift in at least one channel of an optical signal; and a mechanism (400) (420) for broadening a pass band of the optical signal. The nonlinear interferometer (400) of the present invention allows a dense wavelength division multiplexer to have an ease in alignment and a higher tolerance to drifts due to the increase in the width of the pass band. It also has the added ability of being passively stable to temperature.

6. 发明公开

EP1203248A4 HIGH-ISOLATION DENSE WAVELENGTH DIVISION MULTIPLEXER UTILIZING A POLARIZATION BEAM SPLITTER, NON-LINEAR INTERFEROMETERS AND BIREFRINGENT PLATES 有权
标题翻译：偏振分束器，非线性干涉仪和双断路板POET波分复用器高隔离
公开(公告)号：EP1203248A4
公开(公告)日：2003-01-02
申请号：EP00939994
申请日：2000-06-26
申请人： AVANEX CORP
发明人： CAO SIMON X F
IPC分类号： G02B6/34 , G02B6/293 , G02B6/28 , G02B27/28 , H04J14/06
CPC分类号： G02B6/272 , G02B6/2773 , G02B6/29302 , G02B6/29349 , G02B6/29358 , G02B6/29383
摘要： The present invention provides a dense wavelength division multiplexer for separating an optical signal into optical channels. It includes at least one birefringent plate (718, 720), and a polarization beam splitter (702) optically coupled to the at least one birefringent plate, the polarization beam splitter and at least one birefringent plate for separating one or more of the plurality of optical channels, where the separating is based on the polarity of the plurality of optical channels. In a preferred embodiment, the mechanism of separating includes birefringent wedge plates, a polarization beam splitter (702) and two non-linear interferometers (722, 724), with the birefringent wedge plates (718, 720) disposed between the polarization beam splitter (702) and the input and output paths. It also provides an ease in alignment and a higher tolerance to drifts due to the increase in the widths of the pass bands and also provides an improved separation of channels relative to other wavelength division multiplexers employing polarization beam splitters.
摘要翻译：本发明提供在光信号分离成光信道的密集波分复用器。它包括至少一个双折射板，和一个偏振分束器光学耦合到所述至少一个双折射片，偏振分束器和至少一个双折射板，用于通过引入的相位差分离一个或多个光学信道的多个至少两个光通道，其中该分离是基于光信道的多个极性的多个。在优选实施方案，分离的机构包括双折射光楔板，偏振分束器和两个非线性干涉仪，与偏振分束器和所述输入和输出路径之间设置双折射楔形板。本发明提供安心在对准和更高的耐受性漂移由于在通带的宽度的增加等提供了改进的相对于其他波分复用器用人偏振光束分离器的通道的分离。因此，它可以容易地修改以执行加/减功能，因为它单独的通道。制造和利用本发明实现在雅舞蹈的密集波分多路复用器所需要的材料是容易获得的。因此，本发明不需要特殊的或昂贵的材料或工艺。因此有成本效益。

7. 发明公开

EP1242837A4 BI-DIRECTIONAL POLARIZATION-INDEPENDENT OPTICAL ISOLATOR 审中-公开
标题翻译：双向光偏振无关隔离器
公开(公告)号：EP1242837A4
公开(公告)日：2005-01-19
申请号：EP00986216
申请日：2000-11-09
申请人： AVANEX CORP
发明人： CAO SIMON
IPC分类号： G02F1/09 , G02B6/00
CPC分类号： G02F1/093 , G02B6/29358 , G02B6/29362 , G02F2203/02
摘要： A bi-directional polarization independent optical isolator (700) simultaneously transmits two separate signal rays in opposite forward directions and simultaneously suppresses backward transmission of each signal ray in its respective reverse direction. The separate signal rays may comprise either two wavelength bands completely separated by wavelength or two sets of wavelengths, such that wavelengths of the two signal rays are interspersed in alternating fashion. The bi-directional polarization independent isolator includes a birefringent polarization separation/combining element (703), a reciprocal optical rotation element (704), a lens (707), a reflective element (709, 710), and a reciprocal optical rotation element (711). The reflective element comprises either a mirror/waveplate assembly (708) or a non-linear interferometer. Four fibers or optical ports are optically coupled to the isolator and may be configured such that either single-stage bi-directional isolation is accomplished for each of two fiber transmission lines or double stage bi-directional isolation is accomplished on a single fiber transmission line.

8. 发明公开

EP1384098A4 METHOD OF OPERATING A NOISE-COMPENSATING GAIN CONTROLLER FOR AN OPTICAL AMPLIFIER 审中-公开
标题翻译：一种用于运行噪声补偿增益控制光学VESTÄRKER
公开(公告)号：EP1384098A4
公开(公告)日：2004-12-15
申请号：EP02719436
申请日：2002-04-03
申请人： AVANEX CORP
发明人： JU RAY L , LELIC MUHIDIN
IPC分类号： H01S3/067 , H01S3/094 , H01S3/10 , H01S3/13 , H01S3/131 , H04B10/08 , H04B10/155 , H04B10/17 , H01S3/102
CPC分类号： H04B10/2931 , H01S3/06754 , H01S3/094011 , H01S3/10023 , H01S3/1301 , H01S3/1305 , H01S2301/02 , H01S2301/04 , H04B10/0731 , H04B10/2912 , H04B10/50
摘要： A method of operating a noise compensating gain controller(figure 1) in an optical amplifier(3) to avoid overshoot of a selected gain level during amplification transients is provided. The first step of the method includes the computation of a difference in the amount of amplification necessary to bring the combination of the signal and noise component forming the optical output to the selected gain level. Next, a computation is made of an adjustment of the amplification difference that is necessary to bring the signal component of the output to the selected gain level at a post-transient, steady-state condition of the optical input. In the final step, the amplification is changed in accordance with the computed difference in the amount of amplification either prior to or simultaneously with the adjustment to this difference.
摘要翻译：提供了一种操作噪声在光放大器中补偿增益控制器，以避免在扩增瞬变选定的增益电平的过冲的方法。该方法的第一步骤包括在扩增的必要的量的差的计算带来形成所述光输出到所选择的增益电平的信号和噪声分量的组合。接着，计算由所述放大差的调整的做是必要的，以使输出到所选择的增益电平的信号分量在所述光学输入的后瞬态，稳态条件。在最后的步骤中，扩增在雅舞蹈改变与放大的量之前或同时，随着调整该差值所计算的差。

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