公开(公告)号：US20160327816A1

公开(公告)日：2016-11-10

申请号：US15072866

申请日：2016-03-17

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Hari SHANKAR ,  Masaki KATO ,  Yang FU

IPC: G02F1/01 ,  H01S3/067 ,  H01S3/16 ,  G02F1/225

CPC classification number: G02F1/0123 ,  G02B6/12007 ,  G02F1/0147 ,  G02F1/025 ,  G02F1/225 ,  G02F1/2255 ,  G02F2001/212 ,  G02F2202/105 ,  H01S3/06754 ,  H01S3/1608 ,  H01S5/0085 ,  H01S5/0687 ,  H01S5/4012 ,  H01S5/4087 ,  H04B10/505 ,  H04B10/50575

Abstract: An integrated optical modulator device. The device can include a driver module coupled to an optical modulator. The optical modulator is characterized by a raised cosine transfer function. This optical modulator can be coupled to a light source and a bias control module, which is configured to apply an off-quadrature bias to the optical modulator. This bias can be accomplished by applying an inverse of the modulator transfer function to the optical modulator in order to minimize a noise variance. This compression function can result in an optimized increased top eye opening for a signal associated with the optical modulator. Furthermore, the optical modulator can be coupled to an EDFA (Erbium Doped Fiber Amplifier) that is coupled to a filter coupled an O/E (Optical-to-Electrical) receiver.

Abstract translation: 集成光调制器装置。 该装置可以包括耦合到光调制器的驱动器模块。 光调制器的特征在于升高的余弦传递函数。 该光调制器可以耦合到光源和偏置控制模块，该偏置控制模块被配置为向光调制器施加非正交偏置。 可以通过将调制器传递函数的反相应用于光调制器来实现该偏置，以便最小化噪声方差。 该压缩功能可以导致用于与光学调制器相关联的信号的优化的增加的顶部眼睛开度。 此外，光调制器可以耦合到耦合到耦合到O / E（光 - 电）接收器的滤波器的EDFA（掺铒光纤放大器）。

公开(公告)号：US20200212651A1

公开(公告)日：2020-07-02

申请号：US16818801

申请日：2020-03-13

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Masaki KATO ,  Nourhan EID ,  Kenneth Ling WONG

IPC: H01S5/0687 ,  H01S5/10 ,  H01S5/14 ,  H01S5/40 ,  H01S5/022 ,  H01S5/343 ,  H01S5/02 ,  H01S5/026 ,  H01S5/028 ,  H01S5/06

Abstract: A tunable laser device based on silicon photonics includes a substrate configured with a patterned region comprising one or more vertical stoppers, an edge stopper facing a first direction, a first alignment feature structure formed in the patterned region along the first direction, and a bond pad disposed between the vertical stoppers. Additionally, the tunable laser includes an integrated coupler built in the substrate located at the edge stopper and a laser diode chip including a gain region covered by a P-type electrode and a second alignment feature structure formed beyond the P-type electrode. The laser diode chip is flipped to rest against the one or more vertical stoppers with the P-type electrode attached to the bond pad and the gain region coupled to the integrated coupler. Moreover, the tunable laser includes a tuning filter fabricated in the substrate and coupled via a wire waveguide to the integrated coupler.

公开(公告)号：US20200018912A1

公开(公告)日：2020-01-16

申请号：US16579671

申请日：2019-09-23

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Peng-Chih LI ,  Masaki KATO

IPC: G02B6/42 ,  H04B10/40 ,  H04B10/516

Abstract: A photonic transceiver apparatus in QSFP package. The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB, installed inside the spatial volume over the base member having a pluggable electrical connector at the back end. Further, the apparatus includes multiple optical transmitting devices in mini-transmit-optical-sub-assembly package, each being mounted on a common support structure and having a laser output port in reversed orientation toward the back end. Furthermore, the apparatus includes a silicon photonics chip, including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance amplifier module. Moreover, the apparatus includes a pair of optical input/output ports being back connected to the fiber-to-silicon attachment module.

公开(公告)号：US20170324482A1

公开(公告)日：2017-11-09

申请号：US15148710

申请日：2016-05-06

Applicant: INPHI CORPORATION

Inventor： Masaki KATO ,  Radhakrishnan L. NAGARAJAN

IPC: H04B10/67 ,  H04J14/02 ,  H04B10/69

CPC classification number: H04B10/677 ,  G02B6/12007 ,  G02B6/12028 ,  G02B6/2813 ,  G02B6/29344 ,  G02B6/29352 ,  H04B10/69 ,  H04J14/02

Abstract: A silicon photonics based temperature-insensitive delay line interferometer (DLI). The DLI includes a first arm comprising a first length of a first material characterized by a first group index corresponding to a first phase delay to transfer a first light wave with a first peak frequency and a second arm comprising a second length of a second material characterized by a second group index corresponding to a second phase to transfer a second light wave with a second peak frequency with a time-delay difference relative to the first light wave. The first phase delay and the second phase delay are configured to change equally upon a change of temperature. The time-delay difference between the first light wave and the second light wave is set to be inversed value of a free spectral range (FSR) to align at least the first peak frequency to a channel of a designated frequency grid.

公开(公告)号：US20170184941A1

公开(公告)日：2017-06-29

申请号：US15459528

申请日：2017-03-15

Applicant: INPHI CORPORATION

Inventor： Masaki KATO

IPC: G02F1/225 ,  G02F1/025

CPC classification number: G02F1/2257 ,  G02F1/025 ,  G02F2001/212 ,  G02F2201/121 ,  G02F2201/126

Abstract: An apparatus for modulating a beam of light with balanced push-pull mechanism. The apparatus includes a first waveguide comprising a first PN junction on a silicon-on-insulator substrate and a second waveguide comprising a second PN junction on the silicon-on-insulator substrate. The second PN junction is a replica of the first PN junction shifted with a distance. The apparatus further includes a first source electrode and a first ground electrode coupled respectively with the first PN junction and a second source electrode and a second ground electrode coupled respectively with the second PN junction. The apparatus additionally includes a third ground electrode disposed near the second PN junction at the distance away from the second ground electrode, wherein the first ground electrode, the second ground electrode, and the third ground electrode are commonly grounded to have both PN junctions subjected to a substantially same electric field varied in ground-source-ground pattern.

公开(公告)号：US20170126322A1

公开(公告)日：2017-05-04

申请号：US15405214

申请日：2017-01-12

Applicant: INPHI CORPORATION

Inventor： Masaki KATO

IPC: H04B10/43 ,  H04B10/67 ,  H04J14/02 ,  H04B10/50

CPC classification number: H04B10/43 ,  H04B10/40 ,  H04B10/506 ,  H04B10/676 ,  H04J14/02

Abstract: Method and devices of controlling wavelengths in two-channel DEMUX/MUX in silicon photonics are provided. The two-channel DEMUX/MUX includes a waveguide-based delay-line-interferometer at least in receiver portion of a two-channel transceiver for DWDM optical transmission loop and is configured to split a light wave with combined two-wavelengths into one light wave with locked one channel wavelength and another light wave with locked another channel wavelength. The waveguide-based delayed-line interferometer (DLI) is characterized by a free-spectral-range configured to be equal to twice of channel spacing. The method includes tuning heater of DLI in receiver of each two-channel transceiver by using either low-frequency dither signals added on MZMs associated with respective two channels as feedback signal or one DFB laser wavelength tapped from an input of transmitter portion at one channel before or after the MZMs as a direct wavelength reference to feed into an output of receiver portion at another channel.

公开(公告)号：US20170123160A1

公开(公告)日：2017-05-04

申请号：US15374977

申请日：2016-12-09

Applicant: INPHI CORPORATION

Inventor： Masaki KATO ,  Radhakrishnan L. NAGARAJAN

IPC: G02B6/30 ,  G02B6/136 ,  G02B6/122

CPC classification number: G02B6/305 ,  G02B6/1228 ,  G02B6/136 ,  G02B6/26 ,  G02B2006/12061

Abstract: An apparatus for converting fiber mode to waveguide mode. The apparatus includes a silicon substrate member and a dielectric member having an elongated body. Part of the elongated body from a back end overlies the silicon substrate member and remaining part of the elongated body up to a front end is separated from the silicon substrate member by a second dielectric material at an under region. The apparatus also includes a waveguide including a segment from the back end to a tail end formed on the dielectric member at least partially overlying the remaining part of the elongated body. The segment is buried in a cladding overlying entirely the dielectric member. The cladding has a refractive index that is less than the waveguide but includes an index-graded section with decreasing index that is formed at least over the segment from the tail end toward the back end.

公开(公告)号：US20170031117A1

公开(公告)日：2017-02-02

申请号：US15289894

申请日：2016-10-10

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Peng-Chih LI ,  Masaki KATO

IPC: G02B6/42 ,  G02B6/30 ,  G02F1/225 ,  H04B10/40

CPC classification number: G02B6/4257 ,  G02B6/30 ,  G02B6/421 ,  G02B6/4243 ,  G02B6/4246 ,  G02B6/4251 ,  G02B6/4271 ,  G02B6/428 ,  G02B6/4284 ,  G02B6/4286 ,  G02B6/4292 ,  G02F1/2255 ,  G02F2001/212 ,  H04B10/40 ,  H04B10/516 ,  H04J14/02

Abstract: The apparatus includes a case having a base member, two partial side members, and a lid member to provide a spatial volume with an opening at a back end of the base member. Additionally, the apparatus includes a PCB installed inside the spatial volume over the base member with a pluggable connector at the back end. The apparatus includes one or more optical transmitting devices in transmit-optical-sub-assembly package, each being mounted upside-down on the PCB and including a built-in TEC module in contact with the lid member and a laser output port aiming toward the back end. Furthermore, the apparatus includes a silicon photonics chip including a fiber-to-silicon attachment module, mounted on the PCB and coupled to a modulation driver module and a trans-impedance-amplifier module. Moreover, the apparatus includes an optical input port and output port being back connected to the fiber-to-silicon attachment module.

Abstract translation: 该装置包括具有底座构件，两个部分侧构件和盖构件的壳体，以在基座构件的后端提供具有开口的空间体积。 此外，该设备包括安装在基座部件上方的空间体积内的PCB，后端具有可插拔连接器。 该装置包括一个或多个透射 - 光学 - 组件封装中的光学传输装置，它们分别安装在PCB上，并且包括与盖构件接触的内置TEC模块和朝向 后端 此外，该装置包括硅光子芯片，其包括安装在PCB上的光纤至硅附着模块，并耦合到调制驱动器模块和跨阻抗放大器模块。 此外，该装置包括光输入端口和输出端口，其被连接到光纤到硅附接模块。

公开(公告)号：US20160204891A1

公开(公告)日：2016-07-14

申请号：US15076414

申请日：2016-03-21

Applicant: INPHI CORPORATION

Inventor： Masaki KATO

IPC: H04J14/02 ,  H04B10/40

CPC classification number: H04B10/43 ,  H04B10/40 ,  H04B10/506 ,  H04B10/676 ,  H04J14/02

Abstract: Method and devices of controlling wavelengths in two-channel DEMUX/MUX in silicon photonics are provided. The two-channel DEMUX/MUX includes a waveguide-based delay-line-interferometer at least in receiver portion of a two-channel transceiver for DWDM optical transmission loop and is configured to split a light wave with combined two-wavelengths into one light wave with locked one channel wavelength and another light wave with locked another channel wavelength. The waveguide-based delayed-line interferometer (DLI) is characterized by a free-spectral-range configured to be equal to twice of channel spacing. The method includes tuning heater of DLI in receiver of each two-channel transceiver by using either low-frequency dither signals added on MZMs associated with respective two channels as feedback signal or one DFB laser wavelength tapped from an input of transmitter portion at one channel before or after the MZMs as a direct wavelength reference to feed into an output of receiver portion at another channel.

Abstract translation: 提供了在硅光子学中控制双通道DEMUX / MUX中的波长的方法和装置。 双通道DEMUX / MUX至少在用于DWDM光传输环路的双通道收发器的接收器部分中包括基于波导的延迟线干涉仪，并且被配置为将具有组合的两个波长的光波分成一个光波 锁定一个信道波长，另一个光波锁定另一个信道波长。 基于波导的延迟线干涉仪（DLI）的特征在于被配置为等于信道间隔的两倍的自由谱范围。 该方法包括通过使用与相应的两个通道相关联的MZM上附加的低频抖动信号作为反馈信号或在一个通道从发射器部分的输入端口抽头的一个DFB激光波长，在每个双通道收发器的接收机中调谐DLI的加热器。 或在MZM之后作为直接波长参考，以在另一个通道上馈送到接收器部分的输出。

公开(公告)号：US20160127070A1

公开(公告)日：2016-05-05

申请号：US14530146

申请日：2014-10-31

Applicant: INPHI CORPORATION

Inventor： Radhakrishnan L. NAGARAJAN ,  Masaki KATO

IPC: H04J14/02

CPC classification number: G02F1/025 ,  G02F2001/212

Abstract: A two-channel DWDM spectral combiner integrated with a wavelength locker is provided. Two optical signals at ITU grid channels are separately modulated by MZM modulators and combined into a silicon waveguide-based delayed-line interferometer built on silicon-on-insulator substrate to produce a combined signal having a free spectral range equal to twice of the spacing of the two ITU grid channels. Two dither signals can be added respectively to the two optical signals for identifying corresponding two channel wavelengths and locking each wavelength while outputting the combined signal.

Abstract translation: 提供与波长锁存器集成的双通道DWDM光谱组合器。 国际电联电网通道上的两个光信号由MZM调制器单独调制，并组合成一个基于硅绝缘体上硅衬底的基于硅波导的延迟线干涉仪，以产生一个组合信号，该信号的自由光谱范围等于 两个国际电联电网通道。 可以将两个抖动信号分别添加到两个光信号中，用于识别对应的两个信道波长并锁定每个波长，同时输出组合信号。