公开(公告)号：EP0910138B1

公开(公告)日：2003-01-15

申请号：EP98308347.8

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Laura Ellen ,  Bethea, Clyde George ,  Nykolak, Gerald ,  People, Roosevelt ,  Tanbun-Ek, Tawee

IPC: H01S5/02 ,  H01S5/06 ,  H04J7/00 ,  H04J14/04

CPC classification number: H04J14/0298 ,  H01S5/0265 ,  H01S5/06258 ,  H01S5/1243 ,  H04J7/00

公开(公告)号：EP0910138A1

公开(公告)日：1999-04-21

申请号：EP98308347.8

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Laura Ellen ,  Bethea, Clyde George ,  Nykolak, Gerald ,  People, Roosevelt ,  Tanbun-Ek, Tawee

IPC: H01S3/025 ,  H01S3/103 ,  H04J7/00 ,  H04J14/02

CPC classification number: H04J14/0298 ,  H01S5/0265 ,  H01S5/06258 ,  H01S5/1243 ,  H04J7/00

Abstract: In a WDM fiber-optic network, a unique laser transmitter enables signals to be routed at three hierarchical levels: at one level discrimination among signal paths is based on N WDM wavelength channels, at another level discrimination is based on m AM subcarrier frequency channels, and at a third level discrimination is based on n FM subcarrier frequency channels. Thus, a total of Nmn distinguishable optical channels can be accommodated and a like number of users served. The laser transmitter comprises a broadband, tunable semiconductor laser which includes an intracavity, integrated composite reflector to which a tuning voltage and a FM dither signal are applied, an intracavity gain section to which drive current is applied, and an extracavity, integrated electroabsorption modulator to which an information (e.g., data, voice, video) signal and an AM dither signal are applied. The tuning voltage provides coarse wavelength tuning among N WDM channels, whereas the FM dither signal produces an additional m channels via FM-SCM. The AM dither likewise produces an additional n channels via AM-SCM.

Abstract translation: 在WDM光纤网络中，独特的激光发射机使信号能够以三个层次的级别路由：在一个级别，信号路径之间的鉴别基于N个WDM波长信道，在另一个级别，基于m个AM子载波频率信道， 并且在第三级别，鉴别是基于n个FM子载波频率信道。 因此，可以容纳总共Nmn个可辨别的光通道并且服务相同数量的用户。 激光发射机包括宽带可调谐半导体激光器，其包括施加调谐电压和FM抖动信号的腔内集成复合反射器，施加驱动电流的腔内增益部分，以及腔外集成电吸收调制器 其中应用信息（例如，数据，语音，视频）信号和AM抖动信号。 调谐电压在N个WDM通道中提供粗略的波长调谐，而FM抖动信号通过FM-SCM产生额外的m个通道。 AM抖动同样通过AM-SCM产生另外的n个通道。

公开(公告)号：EP1039325A3

公开(公告)日：2003-08-13

申请号：EP00302052.6

申请日：2000-03-14

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Nykolak, Gerald ,  Presby, Herman Melvin ,  Szajowski, Paul F.

IPC: G02B6/42 ,  H04B10/06 ,  H04B10/10

CPC classification number: H04B10/1121

Abstract: An optical receiving system includes a Fresnel lens optically coupled to a detector via a tapered concentrator. The Fresnel lens is adapted to receive an electromagnetic signal and has a Fresnel focal point. The tapered concentrator has a first end surface area larger than a second end surface area. The detector has a sensing surface area oriented to receive the electromagnetic signal emerging from the tapered concentrator.

Abstract translation: 光接收系统包括通过锥形聚光器与检测器光耦合的菲涅尔透镜。 菲涅尔透镜适于接收电磁信号并具有菲涅耳焦点。 锥形集中器具有大于第二端面面积的第一端面面积。 检测器具有被定向成接收从锥形集中器出现的电磁信号的感测表面区域。

公开(公告)号：EP0911927A1

公开(公告)日：1999-04-28

申请号：EP98308305.6

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Laura Ellen ,  Bethea, Clyde George ,  Fang, Wei-Chiao ,  Nykolak, Gerald ,  People, Roosevelt ,  Sergent, Arthur Mike ,  Tanbun-Ek, Tawee ,  Tsang, Won-Tien

IPC: H01S3/103 ,  H01S3/085

CPC classification number: H01S5/06258 ,  H01S5/10

Abstract: A tunable semiconductor laser comprises a gain section having an MQW active region, a uniform pitch grating DFB region, and first waveguide. A composite reflector, including a second MQW region and a second waveguide, forms a cavity resonator with the DFB region. A voltage applied to the composite reflector induces a quantum confined stark effect, thereby allowing the wavelength to be altered. In one embodiment, the current drive to the active region and the shape of the first waveguide (e.g., a raised-sine function) are mutually adapted so that N longitudinal modes have essentially the same threshold gain and so that the DFB region spanned by the first waveguide is segmented into N zones, each zone providing optical feedback at a different wavelength corresponding to a different longitudinal mode.

Abstract translation: 可调谐半导体激光器包括具有MQW有源区，均匀间距光栅DFB区和第一波导的增益区。 包括第二MQW区域和第二波导的复合反射器与DFB区域形成空腔谐振器。 施加到复合反射器的电压引起量子限制的斯塔克效应，从而允许改变波长。 在一个实施例中，对有源区域的当前驱动和第一波导的形状（例如，升高正弦函数）相互适应，使得N个纵向模式具有基本上相同的阈值增益，并且使得由 第一波导被分割成N个区域，每个区域提供对应于不同纵向模式的不同波长的光学反馈。

公开(公告)号：EP0911921A1

公开(公告)日：1999-04-28

申请号：EP98308327.0

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Laura Ellen ,  Bethea, Clyde George ,  Nykolak, Gerald ,  People, Roosevelt ,  Tanbun-Ek, Tawee

IPC: H01S3/025 ,  H01S3/103 ,  H04B10/155

CPC classification number: H01S5/0265 ,  H01S5/06258 ,  H01S5/1243 ,  H04B10/25137 ,  H04B10/503 ,  H04B10/58

Abstract: A tunable semiconductor laser comprises a gain section having an MQW active region, a uniform pitch grating DFB region, and first waveguide. A composite reflector, including a second MQW region and a second waveguide, forms a cavity resonator with the DFB region. A tuning voltage applied to the composite reflector induces a quantum confined stark effect, thereby allowing the center wavelength to be altered. A pre-chirp signal applied the composite reflector reduces signal distortion in fiber optic systems.

Abstract translation: 可调谐半导体激光器包括具有MQW有源区，均匀间距光栅DFB区和第一波导的增益区。 包括第二MQW区域和第二波导的复合反射器与DFB区域形成空腔谐振器。 施加到复合反射器的调谐电压引起量子限制的斯塔克效应，从而允许改变中心波长。 施加复合反射镜的前啁啾信号降低了光纤系统中的信号失真。

公开(公告)号：EP1039325A2

公开(公告)日：2000-09-27

申请号：EP00302052.6

申请日：2000-03-14

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Nykolak, Gerald ,  Presby, Herman Melvin ,  Szajowski, Paul F.

IPC: G02B6/42 ,  H04B10/06

CPC classification number: H04B10/1121

Abstract: An optical receiving system includes a Fresnel lens optically coupled to a detector via a tapered concentrator. The Fresnel lens is adapted to receive an electromagnetic signal and has a Fresnel focal point. The tapered concentrator has a first end surface area larger than a second end surface area. The detector has a sensing surface area oriented to receive the electromagnetic signal emerging from the tapered concentrator.

公开(公告)号：EP0917311A2

公开(公告)日：1999-05-19

申请号：EP98308807.1

申请日：1998-10-27

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Laura Ellen ,  Chen, Young-Kai ,  Nykolak, Gerald

IPC: H04B10/18

CPC classification number: H04B10/2513 ,  H04B2210/254

Abstract: An optical fiber communications system is provided with an adaptive data equalizer (101) to correct for linear distortion of signals transmitted over optical fibers (103). In particular, a feedback signal from a receiver (104) is used to custom tailor the spectral profile of a launched pulse and thereby to minimize the distortion of the received pulse. Because the system uses feedback control, it will adapt for changing conditions in the fiber path. Conveniently, the adaptation process is incurred during the training (sounding) session of a data frame when a train of pulses are sent through the network and looped back. After the training is completed, the loop-back path (106) is disconnected, and data transmission begins with the transmitted pulses pre-distorted to adapt to the connected network.

Abstract translation: 光纤通信系统设置有自适应数据均衡器（101），以校正通过光纤（103）传输的信号的线性失真。 特别地，来自接收机（104）的反馈信号用于定制定制发射脉冲的频谱分布，从而使接收到的脉冲的失真最小化。 由于系统采用反馈控制，因此可适应光纤路径条件的变化。 方便地，当通过网络发送一串脉冲并循环时，在数据帧的训练（发声）会话期间发生适应过程。 在完成训练之后，环回路径（106）被断开，并且数据传输从预先失真的发射脉冲开始，以适应所连接的网络。

公开(公告)号：EP0910144A1

公开(公告)日：1999-04-21

申请号：EP98308350.2

申请日：1998-10-13

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Ellen Laura ,  Bethea, Clyde George ,  Eskildsen, Lars Erik ,  Nykolak, Gerald ,  People, Roosevelt ,  Tanbun-Ek, Tawee

IPC: H01S3/103 ,  H04B10/18 ,  H01S3/025

CPC classification number: H01S5/06258 ,  H01S5/0623 ,  H01S5/0625

Abstract: A tunable semiconductor laser (10) comprises a gain section (12) having an MQW active region (12.1), a uniform pitch grating DFB region (12.2), and first waveguide (12.3). A composite reflector (14), including a second MQW region (14.1) and a second waveguide (14.3), forms a cavity resonator with the DFB region (12.2). A tuning voltage applied to the composite reflector (14) induces refractive index changes, thereby allowing the center wavelength to be altered. A dither signal applied the composite reflector broadens the spectrum of the laser output, thereby reducing SBS in fiber optic systems.

Abstract translation: 可调谐半导体激光器（10）包括具有MQW有源区（12.1），均匀间距光栅DFB区（12.2）和第一波导（12.3）的增益部分（12）。 包括第二MQW区域（14.1）和第二波导管（14.3）的复合反射器（14）与DFB区域（12.2）形成空腔谐振器。 施加到复合反射器（14）的调谐电压引起折射率变化，从而允许改变中心波长。 施加复合反射器的抖动信号使激光输出的频谱变宽，从而减少光纤系统中的SBS。

公开(公告)号：EP0814629B1

公开(公告)日：2010-09-08

申请号：EP97303988.6

申请日：1997-06-09

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Barros, Miriam R. de ,  Eskildsen, Lars Erik ,  Nykolak, Gerald ,  Vengsarkar, Ashish Madhukar ,  Nielsen, Torben N. ,  Tanbun-Ek, Tawee

IPC: H04Q11/00 ,  H04J14/00 ,  H04B10/12

CPC classification number: H04Q11/0005 ,  H04J14/0212 ,  H04J14/0213 ,  H04Q2011/0009 ,  H04Q2011/0015 ,  H04Q2011/0022 ,  H04Q2011/0026 ,  H04Q2011/0039

公开(公告)号：EP0917311A3

公开(公告)日：2004-01-21

申请号：EP98308807.1

申请日：1998-10-27

Applicant: LUCENT TECHNOLOGIES INC.

Inventor： Adams, Laura Ellen ,  Chen, Young-Kai ,  Nykolak, Gerald

IPC: H04B10/18 ,  H04B10/155

CPC classification number: H04B10/2513 ,  H04B2210/254

Abstract: An optical fiber communications system is provided with an adaptive data equalizer (101) to correct for linear distortion of signals transmitted over optical fibers (103). In particular, a feedback signal from a receiver (104) is used to custom tailor the spectral profile of a launched pulse and thereby to minimize the distortion of the received pulse. Because the system uses feedback control, it will adapt for changing conditions in the fiber path. Conveniently, the adaptation process is incurred during the training (sounding) session of a data frame when a train of pulses are sent through the network and looped back. After the training is completed, the loop-back path (106) is disconnected, and data transmission begins with the transmitted pulses pre-distorted to adapt to the connected network.