公开(公告)号：EP3008844A1

公开(公告)日：2016-04-20

申请号：EP14810428.4

申请日：2014-06-13

Applicant: Applied Optoelectronics, Inc.

Inventor： ZHENG, Jun, ,  ANSELM, Klaus Alexander, ,  WANG, Yi, ,  HO, I-Lung, ,  ZHANG, Huanlin, ,  MCINTOSH-DORSEY, Dion,

IPC: H04J14/02 ,  H01S5/42 ,  H01S5/323

CPC classification number: H01S5/0612 ,  H01S5/005 ,  H01S5/0287 ,  H01S5/06246 ,  H01S5/06258 ,  H01S5/1215 ,  H01S5/1246 ,  H01S5/4031 ,  H01S5/4087 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0245

Abstract: A tunable laser with multiple in-line sections generally includes a semiconductor laser body with a plurality of in-line laser sections each configured to be driven independently to generate laser light at a wavelength within a different respective wavelength range. The wavelength of the light generated in each of the laser sections may be tuned, in response to a temperature change, to a channel wavelength within the respective wavelength range. The laser light generated in each selected one of the laser sections is emitted from a front facet of the laser body. By selectively generating light in one or more of the laser sections, one or more channel wavelengths may be selected for lasing and transmission. The tunable laser with multiple in-line sections may be used, for example, in a tunable transmitter in an optical networking unit (ONU) in a WDM passive optical network (PON) to select a transmission channel wavelength.

公开(公告)号：EP2904726A1

公开(公告)日：2015-08-12

申请号：EP13843383.4

申请日：2013-10-03

Applicant: Applied Optoelectronics, Inc.

Inventor： ZHENG, Jun, ,  MURRY, Stefan, ,  HWANG, Wen-Yen,

IPC: H04J14/02

CPC classification number: H01S5/4062 ,  H01S5/4087 ,  H04J14/0254 ,  H04J14/0279 ,  H04J14/0282

Abstract: A filtered laser array assembly generally includes an array of laser emitters coupled between external modulators and an arrayed waveguide grating (AWG). Each of the laser emitters emits light across a plurality of wavelengths including, for example, channel wavelengths in an optical communication system. The AWG filters the emitted light from each of the laser emitters at different channel wavelengths associated with each of the laser emitters. Lasing cavities are formed between each of the laser emitters and a back reflector coupled to an output of the AWG such that laser output from the laser emitters is provided at the respective channel wavelengths of the reflected, filtered light. The external modulators enable high speed modulation of the laser output. The modulated laser output may then be optically multiplexed to produce an aggregate optical signal including multiple channel wavelengths.

公开(公告)号：EP2732514A4

公开(公告)日：2015-07-22

申请号：EP12811021

申请日：2012-07-16

Applicant: APPLIED OPTOELECTRONICS INC ,  ZHENG JUN

Inventor： ZHENG JUN ,  MURRY STEFAN J

IPC: H01S5/14 ,  H01S5/40 ,  H04B10/2587 ,  H04J14/02

CPC classification number: H01S5/0268 ,  H01S5/1028 ,  H01S5/141 ,  H01S5/146 ,  H01S5/4062 ,  H01S5/4087 ,  H04B10/2587 ,  H04J14/0282

公开(公告)号：EP2732566A1

公开(公告)日：2014-05-21

申请号：EP12811401.4

申请日：2012-07-16

Applicant: Applied Optoelectronics, Inc. ,  Zheng, Jun

Inventor： ZHENG, Jun ,  MURRY, Stefan J.,

IPC: H04B10/11

CPC classification number: H04J14/0282 ,  H01S5/141 ,  H01S5/4062 ,  H01S5/4087 ,  H04J14/0245 ,  H04J14/0246 ,  H04J14/0249 ,  H04J14/025

Abstract: A wavelength-selectable laser device generally includes an array of laser emitters and a filtered external cavity for filtering light emitted from the laser emitters and reflecting different wavelengths back to each of the laser emitters such that lasing occurs at different wavelengths for each of the laser emitters. Each laser emitter includes a gain region that emits light across a plurality of wavelengths including, for example, channel wavelengths in an optical communication system. The filtered external cavity may include a dispersive optical element that receives the light from each of the laser emitters at different angles and passes or reflects different wavelengths at different angles such that only wavelengths associated with the respective laser emitters are reflected back to the respective laser emitters. By selectively emitting light from one or more of the laser emitters, one or more channel wavelengths may be selected for lasing and transmission.

公开(公告)号：EP2664086A2

公开(公告)日：2013-11-20

申请号：EP11855377.5

申请日：2011-12-14

Applicant: Applied Optoelectronics, Inc.

Inventor： ZHENG, Jun ,  WANG, Yi ,  PENG, Chuan

IPC: H04B10/04

CPC classification number: H04B10/58 ,  H04B10/2575

Abstract: A distortion compensation circuit with frequency detection may be used with one or more non-linear elements, such as a laser, to compensate for frequency-dependent distortion generated by the non-linear element(s), for example, in broadband multichannel RF applications. Embodiments of the distortion compensation circuit may include a frequency detector circuit that detects changes in frequency loading conditions in the distortion compensation circuit such that distortion compensation may be adjusted to compensate for distortion under different frequency loading conditions. In a multichannel RF system with multiple channel operation modes, for example, the frequency detector circuit may detect changes in the frequency loading condition as a result of changing operation modes.

Abstract translation: 具有频率检测的失真补偿电路可以与一个或多个非线性元件（例如激光器）一起使用，以补偿例如在宽带多通道RF应用中由非线性元件产生的与频率相关的失真 。 失真补偿电路的实施例可以包括频率检测器电路，其检测失真补偿电路中的频率负载条件的变化，使得可以调整失真补偿以补偿在不同频率负载条件下的失真。 在具有多通道操作模式的多通道RF系统中，例如，频率检测器电路可以检测作为改变操作模式的结果的频率负载状态的变化。

公开(公告)号：EP1509975A1

公开(公告)日：2005-03-02

申请号：EP03731472.1

申请日：2003-05-29

Applicant: Applied Optoelectronics Inc.

Inventor： HWANG, Wen-Yen ,  ANSELM, Klaus, Alexander ,  ZHENG, Jun

IPC: H01S3/08 ,  H01S5/00

CPC classification number: H01S5/1082 ,  H01S5/12 ,  H01S5/1203 ,  H01S5/124 ,  H01S5/1243

Abstract: An edge-emitting laser (100) for generating single-longitudinal mode laser light. A semiconductor active region (120) amplifies, by stimulated emission, light in the laser cavity at a lasing wavelength. There are first and second grating sections (141,143) adjacent to the active region (120) and having first and second reflectivities respectively and a first effective index of refraction. The first and second grating sections (141,143) have a Bragg wavelength substantially equal to the lasing wavelength. A gratingless phase-shift section (142) is disposed adjacent to the active region (120) and between the first and second grating sections (141,143) and has a second index of refraction different than the first index of refraction and a length sufficient to impart a phase shift for light at the lasing wavelength sufficient to achieve longitudinal mode operation.

Abstract translation: 一种用于产生单纵模激光的边缘发射激光器（100）。 半导体有源区（120）通过受激发射以激光波长放大激光腔中的光。 有第一和第二光栅部分（141,143）与有源区（120）相邻并分别具有第一和第二反射率以及第一有效折射率。 第一和第二光栅部分（141,143）具有基本上等于激射波长的布拉格波长。 无源相移部分（142）与有源区（120）相邻并位于第一和第二光栅部分（141,143）之间，并且具有与第一折射率不同的第二折射率和足以赋予 激射波长处的光的相移足以实现纵向模式操作。

公开(公告)号：EP3347753A1

公开(公告)日：2018-07-18

申请号：EP16844936.1

申请日：2016-09-06

Applicant: Applied Optoelectronics, Inc.

Inventor： LIN, Kai-Sheng, ,  HO, I-Lung, ,  ZHENG, Jun, ,  WANG, Chong,

IPC: G02B6/43

CPC classification number: G02B6/4209 ,  G02B6/32 ,  G02B6/4215 ,  G02B6/4228 ,  G02B6/4246 ,  G02B6/4263 ,  G02B6/4292 ,  H01S5/0078 ,  H04B10/40

Abstract: A multi-channel transmitter optical subassembly (TOSA) with an off-center fiber in an optical coupling is disclosed, and can provide passive compensation for beam displacement introduced by optical isolators. The optical coupling receptacle can include an optical isolator configured to receive a focused light beam from a focus lens within the TOSA. The optical coupling receptacle may be offset such that a center line of the focused light beam entering the optical isolator is offset from a center line of a fiber within optical coupling receptacle. Thus the optical isolator receives the focused light beam from the focus lens and introduces beam displacement such that an optical signal is launched generally along a center line of the fiber. Thus the expected beam displacement introduced by the optical isolator is eliminated or otherwise mitigated by the offset between a center line of the fiber and a center position of the focus lens.

公开(公告)号：EP3224919A1

公开(公告)日：2017-10-04

申请号：EP15863314.9

申请日：2015-11-24

Applicant: Applied Optoelectronics, Inc.

Inventor： ZHENG, Jun ,  ANSELM, Klaus Alexander ,  ZHANG, Huanlin ,  MCINTOSH-DORSEY, Dion

IPC: H01S5/40

CPC classification number: H01S5/4087 ,  H01S5/0287 ,  H01S5/0612 ,  H01S5/06258 ,  H01S5/1209 ,  H01S5/1215 ,  H01S5/124 ,  H01S5/4031 ,  H01S5/5027

Abstract: A tunable laser with multiple in-line sections including sampled gratings generally includes a semiconductor laser body with a plurality of in-line laser sections configured to be driven independently to generate laser light at a wavelength within a different respective wavelength range. Sampled gratings in the respective in-line sections have the same grating period and a different sampling period to produce the different wavelengths. The wavelength of the light generated in the respective laser sections may be tuned, in response to a temperature change, to a channel wavelength within the respective wavelength range. By selectively generating light in one or more of the laser sections, one or more channel wavelengths may be selected for lasing and transmission. By using sampled gratings with the same grating period in the multiple in-line sections, the multiple section tunable laser may be fabricated more easily.

Abstract translation: 具有包括采样光栅的多个直列部分的可调谐激光器通常包括半导体激光器主体，该半导体激光器主体具有多个直列式激光器部分，该多个直列式激光器部分被配置为独立驱动以产生不同的相应波长范围内的波长的激光。 在各个直列部分中的采样光栅具有相同的光栅周期和不同的采样周期以产生不同的波长。 在各个激光器部分中产生的光的波长可以响应于温度变化而被调谐到相应波长范围内的通道波长。 通过在一个或多个激光器部分中选择性地产生光，可以选择一个或多个信道波长用于激光和传输。 通过在多个直列部分中使用具有相同光栅周期的采样光栅，可以更容易地制造多部分可调谐激光器。

公开(公告)号：EP3213428A1

公开(公告)日：2017-09-06

申请号：EP15854341.3

申请日：2015-10-30

Applicant: Applied Optoelectronics, Inc.

Inventor： HO, I-Lung ,  MURRY, Stefan, J. ,  ZHENG, Jun

IPC: H04B10/40 ,  H04J14/02 ,  H04J14/04

CPC classification number: H04B10/40 ,  G02B6/12033 ,  G02B6/4215 ,  H04B10/506 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0278

Abstract: A multi-channel optical transceiver includes a transmitter optical subassembly (TOSA) with a thermal arrayed waveguide grating (AWG) for multiplexing optical signals and a receiver optical subassembly (ROSA) with an athermal AWG for demultiplexing optical signals. The TOSA may also include a laser array optically coupled to the thermal AWG and a temperature control system thermally coupled to the laser array and the thermal AWG to control temperature for wavelength tuning. The temperature control system in the TOSA may include a thermoelectric cooler (TEC) that cools both the laser array and the thermal AWG. Because the athermal AWG in the ROSA is temperature independent, the ROSA does not include a TEC, thereby reducing power consumption and conserving space. The optical transceiver may be used in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

Abstract translation: 多通道光收发器包括具有用于多路复用光信号的热阵列波导光栅（AWG）的发射器光学子组件（TOSA）和具有用于多路分解光信号的无热AWG的接收器光学子组件（ROSA）。 TOSA还可以包括光学耦合到热AWG的激光器阵列和与激光器阵列和热AWG热耦合的温度控制系统，以控制用于波长调谐的温度。 TOSA中的温度控制系统可能包括一个冷却激光器阵列和热AWG的热电冷却器（TEC）。 由于ROSA中的无热AWG与温度无关，因此ROSA不包含TEC，从而降低功耗并节省空间。 例如，在WDM无源光网络（PON）中的光线路终端（OLT）中，光收发器可用于波分复用（WDM）光学系统中。

公开(公告)号：EP3180874A1

公开(公告)日：2017-06-21

申请号：EP15831537.4

申请日：2015-08-11

Applicant: Applied Optoelectronics, Inc.

Inventor： ZHENG, Jun ,  WANG, Yi ,  HO, I-Lung ,  ANSELM, Klaus Alexander ,  ZHANG, Huanlin

IPC: H04B10/40 ,  H01S5/0683 ,  H04J14/02

CPC classification number: H04B10/07955 ,  H01S5/0268 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/4025 ,  H01S5/4087 ,  H04B10/40 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0282

Abstract: Individual channels of a multiplexed laser array in a multi-channel optical transmitter are monitored at an output of an optical multiplexer. The monitoring may be used to confirm proper operation of each of the channels in the multiplexed laser array and/or to perform wavelength locking on each of the channels. Monitoring at the output of the optical multiplexer avoids the use of multiple photodetectors coupled directly to multiple lasers in the multiplexed laser array. The multiplexed laser array generally includes a plurality of laser emitters optically coupled to an optical multiplexer such as an arrayed waveguide grating (AWG). An optical transmitter with a monitored multiplexed laser array may be used, for example, in an optical line terminal (OLT) in a wavelength division multiplexed (WDM) passive optical network (PON) or in any other type of WDM optical communication system capable of transmitting optical signals on multiple channel wavelengths.

Abstract translation: 多路光发射机中的多路复用激光器阵列的各个通道在光复用器的输出处被监控。 该监视可用于确认多路复用激光器阵列中每个通道的正确操作和/或在每个通道上执行波长锁定。 在光学多路复用器的输出处进行监视避免了使用多路光电探测器直接耦合到多路复用激光器阵列中的多个激光器。 多路复用激光器阵列通常包括多个光学耦合到诸如阵列波导光栅（AWG）之类的光学多路复用器的激光发射器。 例如，可以在波分复用（WDM）无源光网络（PON）中的光线路终端（OLT）中或任何其他类型的WDM光通信系统中使用具有受监控的复用激光器阵列的光发送器， 在多个信道波长上发送光信号。