公开(公告)号：US20160127044A1

公开(公告)日：2016-05-05

申请号：US14528011

申请日：2014-10-30

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Stefan J. Murry ,  Jun Zheng

IPC: H04B10/40 ,  G02B6/12 ,  H04J14/02

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）的发射器光子组件（TOSA）和具有用于解复用光信号的无热AWG的接收器光子组件（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热耦合的温度控制系统和热AWG以控制用于波长调谐的温度。 TOSA中的温度控制系统可以包括冷却激光阵列和热AWG的热电冷却器（TEC）。 由于ROSA中的无热AWG与温度无关，因此ROSA不包括TEC，从而降低功耗并节省空间。 光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US20150357791A1

公开(公告)日：2015-12-10

申请号：US13916652

申请日：2013-06-13

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Klaus Alexander Anselm ,  Yi Wang ,  I-Lung Ho ,  Huanlin Zhang ,  Dion McIntosh-Dorsey

IPC: H01S5/06 ,  H01S5/062 ,  H04B10/572 ,  H01S5/028 ,  H04J14/02 ,  H01S5/40 ,  H01S5/00

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.

Abstract translation: 具有多个在线部分的可调激光器通常包括具有多个在线激光部分的半导体激光器体，每个激光器部分被配置为独立地被驱动以产生在不同的相应波长范围内的波长的激光。 在每个激光部分中产生的光的波长可以响应于温度变化被调谐到相应波长范围内的通道波长。 在每个选择的一个激光部分中产生的激光从激光体的前刻面发射。 通过选择性地在一个或多个激光部分中产生光，可以选择一个或多个信道波长用于激光和透射。 具有多个在线部分的可调激光器可以用于例如WDM无源光网络（PON）中的光网络单元（ONU）中的可调谐发射机中，以选择传输信道波长。

公开(公告)号：US20150295385A1

公开(公告)日：2015-10-15

申请号：US14248553

申请日：2014-04-09

Applicant: Applied Optoelectronics, Inc.

Inventor： Yi Wang ,  Jun Zheng ,  Yanyan Zhang

IPC: H01S5/062 ,  H04J14/02 ,  H04B10/50 ,  H01S5/068 ,  H01S5/024

CPC classification number: H01S5/062 ,  H01S5/024 ,  H01S5/02415 ,  H01S5/0428 ,  H01S5/0612 ,  H01S5/06253 ,  H01S5/06804 ,  H01S5/06817 ,  H01S5/4087 ,  H04B10/503 ,  H04B10/506 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/0256 ,  H04J14/0282

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. A switch module may be configured to couple a signal from a laser driver to a selected one of the plurality of in-line laser sections, wherein the signal modulates the laser light generated by the in-line laser section. The selected in-line section may be DC biased to a lasing state and the non-selected in-line sections may be DC biased to a non-lasing or transparent state.

Abstract translation: 具有多个在线部分的可调激光器通常包括具有多个在线激光部分的半导体激光器体，每个激光器部分被配置为独立地被驱动以产生在不同的相应波长范围内的波长的激光。 在每个激光部分中产生的光的波长可以响应于温度变化被调谐到相应波长范围内的通道波长。 开关模块可以被配置为将来自激光驱动器的信号耦合到多个在线激光器部分中的所选择的一个，其中该信号调制由在线激光器部分产生的激光。 所选择的在线部分可以被直流偏置到激光状态，并且未选择的在线部分可以被DC偏置到非激光或透明状态。

公开(公告)号：US20150245114A1

公开(公告)日：2015-08-27

申请号：US14188768

申请日：2014-02-25

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Jun Zheng ,  Hung-Lun Chang

IPC: H04Q11/00 ,  H04B10/079 ,  H04B10/50 ,  H04J14/02

CPC classification number: H04B10/503 ,  H04B10/079 ,  H04B10/40 ,  H04B10/572 ,  H04J14/0256 ,  H04J14/0282 ,  Y10T29/49002

Abstract: A bidirectional optical subassembly (BOSA) optical networking unit (ONU) generally includes a BOSA housing. A tunable laser is located in the BOSA housing and is configured to generate a first optical signal for transmission at a first selected wavelength based on temperature control. The tunable laser is a distributed feedback (DFB) laser diode. A thermal management device is also located in the BOSA housing and is configured to provide the temperature control. A photo diode is further located in the BOSA housing and is configured to receive a second optical signal at a second selected wavelength. The BOSA housing comprises an alloy of stainless steel or an alloy of Kovar.

Abstract translation: 双向光学子组件（BOSA）光网络单元（ONU）通常包括BOSA外壳。 可调激光器位于BOSA壳体中，并且被配置为基于温度控制产生用于以第一选定波长传输的第一光信号。 可调激光器是分布式反馈（DFB）激光二极管。 BASA外壳中还设有热管理装置，并配置为提供温度控制。 光电二极管还位于BOSA壳体中，并且被配置为在第二选定波长处接收第二光信号。 BOSA外壳包括不锈钢或Kovar合金的合金。

公开(公告)号：US20150055960A1

公开(公告)日：2015-02-26

申请号：US13975867

申请日：2013-08-26

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Yi Wang ,  I-Lung Ho

IPC: H04B10/50 ,  H04B10/40

CPC classification number: H04B10/503 ,  H01S5/02216 ,  H01S5/02415 ,  H01S5/02453 ,  H01S5/02461 ,  H01S5/12 ,  H04B10/40 ,  H04J14/02

Abstract: A heated laser package generally includes a laser diode, a heating resistor and a transistor in a single laser package. The heating resistor and transistor form a heating circuit and may be located on a submount adjacent to the laser diode. The transistor is configured to control the drive current to the heating resistor and any additional heat generated by the transistor may contribute to the heating of the laser diode and thus increase the thermal efficiency of the system. The heated laser package may be used in a temperature controlled multi-channel transmitter optical subassembly (TOSA), which may be used in a multi-channel optical transceiver. 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: 加热的激光器封装通常包括激光二极管，加热电阻器和单个激光器封装中的晶体管。 加热电阻器和晶体管形成加热电路并且可以位于与激光二极管相邻的基座上。 晶体管被配置为控制到加热电阻器的驱动电流，并且由晶体管产生的任何额外的热量可能有助于激光二极管的加热，从而提高系统的热效率。 加热的激光器封装可以用在可以在多通道光收发器中使用的温度控制的多通道发射机光学子组件（TOSA）中。 光收发器可以用在波分复用（WDM）光学系统中，例如在WDM无源光网络（PON）中的光线路终端（OLT）中。

公开(公告)号：US10418782B2

公开(公告)日：2019-09-17

申请号：US15640978

申请日：2017-07-03

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Stefan J. Murry ,  Bujin Guo

IPC: H04J14/02 ,  H01S5/14 ,  H04B10/50 ,  H01S3/08 ,  H01S3/105 ,  H01S3/106 ,  H01S5/022

Abstract: A wavelength-selectable laser device providing spatially-selectable wavelength(s) may be used to select one or more wavelengths for lasing in a tunable transmitter or transceiver, for example, in a wavelength division multiplexed (WDM) optical system such as a WDM passive optical network (PON). The wavelength-selectable laser device uses a dispersive optical element, such as a diffraction grating, to disperse light emitted from a laser emitter and to direct different wavelengths of the light toward a reflector at different spatial positions such that the wavelengths may be selected by allowing light to be reflected from selected spatial position(s) back into the laser emitter. Thus, the reflected light with a wavelength at the selected spatial position(s) is allowed to complete the laser cavity.

公开(公告)号：US10020636B2

公开(公告)日：2018-07-10

申请号：US14551353

申请日：2014-11-24

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Klaus Alexander Anselm ,  Huanlin Zhang ,  Dion McIntosh-Dorsey

IPC: H04B10/50 ,  H01S5/06 ,  H04B10/27 ,  H04J14/02 ,  H01S5/12 ,  H01S5/0625 ,  H01S5/024 ,  H01S5/10 ,  H01S5/40

CPC classification number: H01S5/1209 ,  H01S5/02415 ,  H01S5/0612 ,  H01S5/06258 ,  H01S5/1092 ,  H01S5/4087

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.

公开(公告)号：US09964720B2

公开(公告)日：2018-05-08

申请号：US14295459

申请日：2014-06-04

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Yi Wang ,  I-Lung Ho ,  Chong Wang

IPC: G02B6/42 ,  H04J14/02 ,  H04B10/50 ,  H04B10/572 ,  H01S5/024 ,  H01S5/068 ,  G02B6/12 ,  G02B6/293 ,  H01S5/00 ,  H01S5/12 ,  H01S5/022 ,  H01S5/06 ,  H01S5/40

CPC classification number: G02B6/4271 ,  G02B6/12019 ,  G02B6/29329 ,  G02B6/2938 ,  G02B6/4292 ,  H01S5/0014 ,  H01S5/02216 ,  H01S5/02415 ,  H01S5/02453 ,  H01S5/0612 ,  H01S5/06804 ,  H01S5/12 ,  H01S5/4025 ,  H01S5/4087 ,  H04B10/503 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0256

Abstract: The temperature at different locations along a multiplexed laser array may be monitored by sensing temperature at two locations within a transmitter optical subassembly (TOSA) package housing the laser array. The temperature at the two locations is used to determine a temperature tilt across the laser array. Estimated temperatures may then be determined at one or more other locations along the laser array from the temperature tilt. The estimated temperature(s) may then be used to adjust the temperature proximate the other locations, for example, for purposes of tuning lasers at those locations along the laser array to emit a desired channel wavelength. The TOSA package may be used in an optical transceiver in a wavelength division multiplexed (WDM) optical system, for example, in an optical line terminal (OLT) in a WDM passive optical network (PON).

公开(公告)号：US09817196B2

公开(公告)日：2017-11-14

申请号：US14974492

申请日：2015-12-18

Applicant: Applied Optoelectronics, Inc.

Inventor： I-Lung Ho ,  Jun Zheng ,  Chong Wang

IPC: G02B6/42 ,  H04B10/40 ,  H04B10/60

CPC classification number: G02B6/4215 ,  G02B6/4214 ,  G02B6/4263 ,  H04B10/40 ,  H04B10/60

Abstract: An optical sub-assembly cartridge for use in a multi-channel receiver optical sub-assembly (ROSA) is disclosed and includes pre-aligned demultiplexing optics. The optical sub-assembly cartridge may include a plurality of sidewalls which define a cartridge body and at least partially enclose a cavity therein. A sidewall of the cartridge body may include a sidewall opening configured to allow light to enter the cavity. A first optical filter disposed opposite the sidewall opening may receive light entering the cavity and be configured to pass unassociated channel wavelengths out of the cavity while reflecting associated channel wavelengths to a mirror disposed in the cavity. The mirror may then reflect the received channel wavelengths to a second optical filter within or external to the cavity. The second optical filter may emit a narrow spectrum of channel wavelengths to a photodiode package to convert the same to a proportional electrical signal.

公开(公告)号：US09762028B2

公开(公告)日：2017-09-12

申请号：US14590456

申请日：2015-01-06

Applicant: Applied Optoelectronics, Inc.

Inventor： Jun Zheng ,  Stefan Murry ,  Klaus Alexander Anselm ,  Huanlin Zhang ,  Dion McIntosh-Dorsey

IPC: H01S5/0625 ,  H01S5/062 ,  H01S5/024

CPC classification number: H01S5/06256 ,  H01S5/02415 ,  H01S5/06226

Abstract: A two-section semiconductor laser includes a gain section and a modulation-independent grating section to reduce chirp. The modulation-independent grating section includes a diffraction grating for reflecting light and forms a laser cavity with the gain section for lasing at a wavelength or range of wavelengths reflected by the diffraction grating. The gain section of the semiconductor laser includes a gain electrode for driving the gain section with at least a modulated RF signal and the grating section includes a grating electrode for driving the grating section with a DC bias current independent of the modulation of the gain section. The semiconductor laser may thus be directly modulated with the modulated RF signal without the modulation significantly affecting the index of refraction in the diffraction grating, thereby reducing chirp.