公开(公告)号：EP3251185A1

公开(公告)日：2017-12-06

申请号：EP16710072.6

申请日：2016-03-04

申请人： Apple Inc.

发明人： AUDET, Ross M. ,  ARBORE, Mark Alan ,  BISMUTO, Alfredo ,  BIDAUX, Yves ,  MULLER, Antoine Jean André

IPC分类号： H01S5/0625 ,  H01S5/06 ,  H01S5/026 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/125 ,  H01S5/227

CPC分类号： H01S5/0683 ,  H01S5/0224 ,  H01S5/02453 ,  H01S5/026 ,  H01S5/0261 ,  H01S5/0607 ,  H01S5/0612 ,  H01S5/06256 ,  H01S5/06832 ,  H01S5/0687 ,  H01S5/12 ,  H01S5/125 ,  H01S5/141 ,  H01S5/227

摘要： Methods for driving a tunable laser with integrated tuning elements are disclosed. The methods can include modulating the tuning current and laser injection current such that the laser emission wavelength and output power are independently controllable. In some examples, the tuning current and laser injection current are modulated simultaneously and a wider tuning range can result. In some examples, one or both of these currents is sinusoidally modulated. In some examples, a constant output power can be achieved while tuning the emission wavelength. In some examples, the output power and tuning can follow a linear relationship. In some examples, injection current and tuning element drive waveforms necessary to achieve targeted output power and tuning waveforms can be achieved through optimization based on goodness of fit values between the targeted and actual output power and tuning waveforms.

公开(公告)号：EP2031371B1

公开(公告)日：2016-03-16

申请号：EP08015113.7

申请日：2008-08-27

申请人： SYSMEX CORPORATION

发明人： Ueno, Kunio

IPC分类号： G01N15/14 ,  G01N21/53 ,  H01S3/13 ,  H01S5/06

CPC分类号： G01N15/1459 ,  G01N15/1434 ,  G01N2015/0073 ,  G01N2015/008 ,  G01N2015/0084 ,  G01N2201/0612 ,  G01N2201/0692 ,  G01N2201/0697 ,  H01S5/0427 ,  H01S5/0622 ,  H01S5/0652 ,  H01S5/0653 ,  H01S5/06832

公开(公告)号：EP2797183A1

公开(公告)日：2014-10-29

申请号：EP13165472.5

申请日：2013-04-26

申请人： Xieon Networks S.à.r.l.

发明人： Rapp, Lutz ,  Gentner, Guido

IPC分类号： H01S3/094 ,  H01S3/131 ,  H01S5/068 ,  H01S5/0683 ,  H01S3/067 ,  H01S3/13 ,  H01S3/30 ,  H01S5/40

CPC分类号： H01S3/094003 ,  H01S3/06754 ,  H01S3/094073 ,  H01S3/09408 ,  H01S3/094096 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/302 ,  H01S5/0617 ,  H01S5/06808 ,  H01S5/06812 ,  H01S5/06832 ,  H01S5/4012 ,  H04B10/07955 ,  H04B10/503 ,  H04B10/564

摘要： A method and a device is provided driving an optical laser diode (710, 711) during operation in an optical communication network, by
- determining a laser transfer function (741, 742) during operation of the laser diode (710, 711) and
- providing a control signal (750, 749) for driving the laser diode (710, 711) according to the laser transfer function (741, 742).
The LD emission may be polarisation combined with the output of a second LD to provide non-polarized pumping light for a Raman optical amplifier used in an optical communication device. After the self-calibration of the two LD, during operation the calibration can be controlled by providing a modulation (770,771) on the LD bias current (778,779) and detecting (790,791) the voltage (716,718) over the LD (710,711). This information is used to update the L-I-slope as stored in the controller (740). Only a single monitor photodiode (730) is used for pump power stabilisation of the Raman amplifier as the control of the individual LD output power is performed via voltage and current measurements at the laser diodes.

摘要翻译： 提供了一种在光通信网络中操作期间通过在激光二极管（710,711）的操作期间确定激光传递函数（741,742）来驱动光学激光二极管（710,711）的方法和装置， 提供用于根据激光传递函数（741,742）驱动激光二极管（710,711）的控制信号（750,749）。 LD发射可以与第二LD的输出偏振结合，以为用于光通信装置的拉曼光放大器提供非偏振的泵浦光。 在两个LD的自校准之后，在操作期间，可以通过在LD偏置电流（778,779）上提供调制（770,771）并检测（790,791）LD（710,711）上的电压（716,718）来控制校准。 该信息用于更新存储在控制器（740）中的L-I斜率。 只有单个监视光电二极管（730）用于拉曼放大器的泵浦功率稳定，因为通过激光二极管的电压和电流测量来执行单个LD输出功率的控制。

公开(公告)号：EP2255421A4

公开(公告)日：2013-03-27

申请号：EP09720344

申请日：2009-03-11

申请人： OEWAVES INC

发明人： MALEKI LUTE ,  MATSKO ANDREY B ,  SAVCHENKOV ANATOLIY ,  ILCHENKO VLADIMIR ,  LIANG WEI ,  SEIDEL DAVID ,  BYRD JERRY

IPC分类号： H01S3/08 ,  H01S3/00 ,  H01S5/0687

CPC分类号： H01S5/0687 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/0656 ,  H01S5/06832 ,  H01S5/06837 ,  H01S5/142

公开(公告)号：EP1391064B8

公开(公告)日：2007-11-21

申请号：EP02754641.5

申请日：2002-05-07

申请人： International Business Machines Corporation

发明人： DECUSATIS, Casimer, M. ,  JACOBOWITZ, Lawrence

IPC分类号： H04B10/155

CPC分类号： H04B10/572 ,  H01S5/06832 ,  H04B10/506

摘要： A wavelength-locked loop servo-control circuit and methodology that enables real time mutual alignment of an electromagnetic signal having a peaked spectrum function including a center wavelength and a wavelength selective device implementing a peaked passband function including a center wavelength, in a system employing electromagnetic waves. The circuit comprises a mechanism for applying a dither modulation signal at a dither modulation frequency to the electromagnetic signal, and inputting the dither modulated electromagnetic signal to the wavelength selective device; a mechanism for converting a portion of the dither modulated electromagnetic signal to an electric feedback signal; a mechanism for continuouslz comparing the feedback signal with said dither modulation signal and generating an error signal representing a difference between a frequency characteristic of the feedback signal and a dither modulation frequency; and a mechanism for adjusting the peaked spectrum function of the electromagnetic signal according to the error signal. The center wavelength of the electromagnetic signal and the wavelength selective device center wavelength become aligned when the frequency characteristic of the feedback signal is two times the dither modulation frequency.

摘要翻译： 本发明涉及一种波长锁定回路伺服控制电路和方法，其能够在采用电磁波的系统中实现具有包括中心波长的峰值光谱函数的电磁信号和实现包括中心波长的峰值通带函数的波长选择装置的电磁信号的实时相互对准 波浪。 该电路包括用于将抖动调制频率的抖动调制信号施加到电磁信号并将抖动调制的电磁信号输入到波长选择装置的机构; 用于将抖动调制电磁信号的一部分转换成电反馈信号的机构; 用于连续地将所述反馈信号与所述抖动调制信号进行比较并且生成表示所述反馈信号的频率特性与抖动调制频率之间的差的误差信号的机构; 以及根据误差信号调整电磁信号的峰值频谱函数的机制。 当反馈信号的频率特性是抖动调制频率的两倍时，电磁信号的中心波长和波长选择装置中心波长变得一致。

公开(公告)号：EP1572992A2

公开(公告)日：2005-09-14

申请号：EP03786706.6

申请日：2003-11-12

申请人： Intel Corporation (a Delaware Corporation)

发明人： YOON, Taesub ,  ASURI, Bhushan

IPC分类号： C12N9/02

CPC分类号： H01S5/06832 ,  H01S5/0014 ,  H01S5/042

摘要： A laser driver circuit to provide a current signal to power a laser device (306) is described. A bias current (IBIAS) provided to the laser device (306) may be changed while changes in the output power of a light signal (310) from the laser device (306) is monitored. A slope efficiency associated with the laser device (306) may be determined based upon the changes in the bias current (IBIAS) and changes in the output power.

公开(公告)号：EP1162707A3

公开(公告)日：2004-09-15

申请号：EP01112925.1

申请日：2001-06-06

申请人： Matsushita Electric Industrial Co., Ltd.

发明人： Asano, Hiroaki

IPC分类号： H01S5/0683

CPC分类号： H01S5/06832 ,  H01S5/06825

摘要： A technique for driving a laser diode on the basis of automatic power control (APC) is disclosed. The technique uses, for the bottom level feedback control, a constant reference voltage instead of a variable intermediate signal generated in the peak level feed back control. The constant reference voltage may be either a reference voltage for the peak level control or a separately generated voltage. A technique for setting the extinction ratio to 1/n is also disclosed. The APC is capable of shortening the start-up period.

公开(公告)号：EP1166407A1

公开(公告)日：2002-01-02

申请号：EP00909848.4

申请日：2000-02-15

申请人： Altitun AB

发明人： ANDERSSON, Lars

IPC分类号： H01S5/068 ,  H01S3/10 ,  H01L33/00

CPC分类号： H01S5/0687 ,  H01S5/0014 ,  H01S5/06255 ,  H01S5/06256 ,  H01S5/06832

摘要： A method of evaluating a tuneable laser (15) and determining suitable laser operation points, wherein said laser includes two or more tuneable sections in which injected currents can be varied, of which sections at least one is a reflector section and one is a phase section. The invention is characterised by leading part of the light emitted by the laser (15) to an arrangement which includes a Fabry-Perot filter (32) and a first detector (33) and a second detector (34), said detectors being adapted to measure the power of the laser and to deliver a corresponding detector signal (I1, I2); arranging the detectors relative to the Fabry-Perot filter so that the detector signals (I1, I2) will contain information relating at least to the wavelength of the detected light; sweeping the currents through the tuning sections (17, 18, 19) such as to pass through different current combinations; measuring the ratio between the two detector signals (I1, I2) during said sweep, wherein the reflector current (17) is the inner sweep variable which is swept in one direction and then in an opposite direction back to its start value; and storing the control combination for said tuning currents when the ratio between the detector signals (I1, I2) lies within a predetermined range signifying that the emitted light lies within one of a number of wavelengths given by the Fabry-Perot filter (32) and said ratio lies within said predetermined range for a given reflector current in both sweep directions of said reflector current.

公开(公告)号：EP1149443A1

公开(公告)日：2001-10-31

申请号：EP99948194.8

申请日：1999-09-09

申请人： New Focus, Inc.

发明人： DAY, Timothy ,  TUGANOV, Alexander, V. ,  WU, I-Fan ,  PEASE, John ,  FARINAS, Alejandro, D. ,  ARNONE, David, F. ,  REITER, Kenneth, C. ,  BROWNELL, Michael ,  CARNEY, Robert, A. ,  MOORE, Bruce, A.

IPC分类号： H01S3/10

CPC分类号： H01S5/02248 ,  H01S3/105 ,  H01S3/1055 ,  H01S5/0427 ,  H01S5/0617 ,  H01S5/06213 ,  H01S5/06804 ,  H01S5/06832 ,  H01S5/0687 ,  H01S5/1039 ,  H01S5/141 ,  H01S5/143

摘要： The present invention provides an optical multimeter (100) for use in calibrating and testing optical components. The optical multimeter (100) includes an analog/digital signal generator (250) for delivering an output beam (260) over a wide range of frequencies, duty cycles and amplitudes. Circuitry is also provided for modulation (222) of an analog signal onto the output. The signal generator (250) includes a tunable laser that is thermally stabilized as to optical path length, as well as tuning angle of the tuning element. The tunable laser exhibits a small form factor due in part to a novel wavelength control process which utilizes an open loop system to maintain precise output wavelength (260) control without the requirement of either a wavelength or position feedback device. Additionally, the tunable laser incorporates an inexpensive modulator circuit (222) which combines a low frequency closed loop power control with a separate digital modulator.

公开(公告)号：EP1042875A1

公开(公告)日：2000-10-11

申请号：EP98962299.8

申请日：1998-12-22

申请人： TELLABS DENMARK A/S

发明人： JENSEN, Niels, Anker

IPC分类号： H04B10/155 ,  H01S3/133

CPC分类号： H04B10/564 ,  H01S5/0683 ,  H01S5/06832 ,  H04B10/504

摘要： An optical transmitter comprises a laser diode (1) capable of emitting an optical signal in response to an electric current through the laser diode, said current consisting of a bias contribution and a modulation contribution provided by an information signal. The transmitter moreover comprises a photodetector (2) capable of detecting the optical signal and emitting an electrical monitor signal in response to the optical signal. The monitor signal is used for controlling the laser diode by means of first and second control loops. The first control loop controls the size of the bias contribution of the current through the laser diode in response to the monitor signal. The second control loop is adapted to control the size of the modulation contribution of the current through the laser diode in response to the monitor signal; the second control loop comprises a transimpedance amplifier (14) having a low input impedance, said monitor signal being connected to an input on this transimpedance amplifier. The first control loop comprises a current-controlled source (7), and the electrical monitor signal is connected to an input on this current-controlled source.