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61. 发明专利

JP2011501423A Laser light source and a method of operating the same 有权
公开(公告)号：JP2011501423A
公开(公告)日：2011-01-06
申请号：JP2010529286
申请日：2008-10-15
申请人：オクラーロテクノロジーピーエルシー.Oclaro Technology Plc.
发明人：トローガー，ヨェルグ , マトゥシェク，ニコライ , モルディーク，シュテファン
IPC分类号： H01S5/14 , H01S3/06
CPC分类号： H01S5/146 , H01S3/06754 , H01S3/094003 , H01S3/094076 , H01S3/09415 , H01S3/1305 , H01S5/0287 , H01S5/06216 , H01S5/0657 , H01S5/06835 , H01S5/1021 , H01S5/141 , H01S2301/03 , H01S2301/06
摘要： A laser light source comprises a semiconductor laser adapted for pulsed operation, a partially transmitting wavelength selective light reflector. The semiconductor laser comprises a front facet and a back facet. The front facet and the back facet define an internal laser cavity. The internal laser cavity comprises a laser active medium. The partially transmitting wavelength selective light reflector has a peak reflectivity within a gain bandwidth of said laser active medium. The wavelength selective light reflector and the back facet define an external laser cavity. A roundtrip time of light in the external laser cavity is about 20 nanoseconds or less. A full width half maximum bandwidth of the wavelength selective light reflector is adapted to accommodate at least 12 longitudinal modes of the internal laser cavity and at least 250 longitudinal modes of the external laser cavity.

62. 发明专利

JP4309939B2 Semiconductor laser driving device, an optical head, and optical disk device 有权
标题翻译：空值
公开(公告)号：JP4309939B2
公开(公告)日：2009-08-05
申请号：JP2007327511
申请日：2007-12-19
申请人：株式会社東芝
发明人：伸暁加治 , 一雄渡部
IPC分类号： G11B7/125 , H01S5/0683
CPC分类号： G11B7/126 , H01S5/06835

63. 发明专利

JP2004186626A Semiconductor laser drive unit 有权
公开(公告)号：JP2004186626A
公开(公告)日：2004-07-02
申请号：JP2002354883
申请日：2002-12-06
申请人： Sony Disc Technology Inc , 株式会社ソニー・ディスクテクノロジー
发明人： NAKAYAMA KUNIO
IPC分类号： G11B7/0045 , G11B7/125 , H01S5/024 , H01S5/042 , H01S5/0683 , H01S5/40
CPC分类号： H01S5/042 , H01S5/02415 , H01S5/0427 , H01S5/06835 , H01S5/4031
摘要： PROBLEM TO BE SOLVED: To obtain a laser beam from a semiconductor laser with stable quantity of outgoing light. SOLUTION: A semiconductor laser 1 is thermally combined with a semiconductor laser 2, and driving-controlled with a feedback circuit comprising a photo-detector 4, a circuit 5 and a circuit 6 so as to obtain a stable quantity of outgoing light. A current I 0 ' related to a driving current I 0 of the laser 1 is outputted from a current mirror circuit 9. Meanwhile, a modulated signal is supplied through circuits 13 and 12 to a current draw type current driving circuit 7, and a current I 2 based on the modulated signal is taken out from a collector of a transistor 73. The laser 2 is driven with a current I 1 provided by subtracting the current I 2 from the current I 0 ', to output a laser beam modulated based on the modulated signal. Modulation for the signal with the laser 2 is performed without acting on the current I 0 , and further the laser 2 is driven by using the current I 0 ' related to the current I 0 , so that the quantity of the outgoing light is stabilized. COPYRIGHT: (C)2004,JPO&NCIPI

64. 发明专利

JP3476711B2 Power control device 有权
公开(公告)号：JP3476711B2
公开(公告)日：2003-12-10
申请号：JP19132699
申请日：1999-07-06
申请人：ルーセントテクノロジーズインコーポレーテッド
发明人：サッキンガーエダード , 祐助太田
IPC分类号： H01S5/0683 , H01S5/068 , H04B10/04 , H04B10/06 , H04B10/08 , H04B10/14 , H04B10/158
CPC分类号： H04B10/695 , H01S5/06825 , H01S5/06835

65. 发明专利

JP2003347667A Drive device of light-emitting element 有权
标题翻译：发光元件的驱动装置
公开(公告)号：JP2003347667A
公开(公告)日：2003-12-05
申请号：JP2002151263
申请日：2002-05-24
申请人： Motorola Inc , モトローラ・インコーポレイテッド
发明人： HOSHI TSUKASA , SAKAMOTO HIROSHI
IPC分类号： H01S5/0683 , H03K17/78
CPC分类号： H04B10/564 , H01S5/06835 , H04B10/504
摘要： PROBLEM TO BE SOLVED: To provide a drive device which realizes a high-speed and high- accuracy light control of a light-emitting element.
SOLUTION: A photo diode 11 for monitor receives light of a laser diode 12 and generates a current Im corresponding to the light output. The current Im is converted to a monitor voltage Vm in a current/voltage conversion circuit 13, and the waveform is smoothed by a first low-pass filter 14 to be the average value Vav including ripple components for monitor. A light power setting voltage Vps, which is generated by a variable DC voltage source 25 and is not modulated yet, is modulated in a pulse modulation circuit 22 from a data signal delayed by a given time and smoothed through a second low-pass filter 23 and a third low-pass filter 24. Hence, synchronized with the average value Vav, a light power setting voltage Vref having approximately the same amplitude as the average value Vav and the ripple components is generated.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供实现发光元件的高速和高精度光控制的驱动装置。解决方案：用于监视器的光电二极管11接收激光二极管12的光并产生对应于光输出的电流Im。电流Im被转换为电流/电压转换电路13中的监视电压Vm，并且波形由第一低通滤波器14平滑化成包括用于监视的纹波分量的平均值Vav。由可变直流电压源25产生并且未被调制的光功率设定电压Vps由延迟了给定时间的数据信号在脉冲调制电路22中被调制并通过第二低通滤波器23平滑化和第三低通滤波器24.因此，与平均值Vav同步，产生具有与平均值Vav和纹波分量大致相同振幅的光功率设定电压Vref。版权所有（C）2004，JPO

66. 发明专利

JPS59158577A Control circuit for optical output from laser diode 失效
标题翻译：激光二极管的光输出控制电路
公开(公告)号：JPS59158577A
公开(公告)日：1984-09-08
申请号：JP3177383
申请日：1983-03-01
申请人： Oki Electric Ind Co Ltd
发明人： TOUHOU TOSHIO
IPC分类号： H01S5/068 , H01S5/0683
CPC分类号： H01S5/06835
摘要： PURPOSE:To prevent the variation (an extinction ratio of light does not change) of an optical output and the amplitude of a pulse output photoelectric-converted by changing both the DC bias of a laser diode and the amplitude of pulse currents. CONSTITUTION:An optical output control circuit for a laser diode LD driven by the sum Ip+Ib of pulse currents Lp interrupted by signal pulses and DC bias currents Ib is provided with a thermo-unit TU containing a thermistor having approximately the same temperature characteristics as the temperature change characteristics of the threshold currents of the laser diode LD, a means controlling DC bias currents Ib in response to an output from the thermo-unit TU, a photodiode PD monitoring back beams from the laser diode LD, and a means varying said pulse currents Ip in response to the change of the light-receiving currents of the photodiode PD.
摘要翻译：目的：通过改变激光二极管的直流偏置和脉冲电流的幅度，防止光输出的变化（光的消光比不变）和通过光电转换的脉冲输出的幅度。构成：由信号脉冲和直流偏置电流Ib中断的由脉冲电流Lp的和Ip + Ib驱动的激光二极管LD的光输出控制电路设置有包含热敏电阻的热单元TU，该热敏电阻具有与激光二极管LD的阈值电流的温度变化特性，响应于来自热电单元TU的输出控制DC偏置电流Ib的装置，监测来自激光二极管LD的反射束的光电二极管PD以及改变所述脉冲电流Ip响应于光电二极管PD的光接收电流的变化。

67. 发明专利

JPS5963787A Stabilizing system of optical output 失效
标题翻译：光输出稳定系统
公开(公告)号：JPS5963787A
公开(公告)日：1984-04-11
申请号：JP17437282
申请日：1982-10-04
申请人： Fujitsu Ltd
发明人： OONISHI MASARU , YAMAGUCHI NOBUHIDE , OKADA KIMIYOSHI
IPC分类号： H01S5/068 , H01S5/0683
CPC分类号： H01S5/06835
摘要： PURPOSE:To keep a peak value constant while maintaining a desired extinction ratio by independently controlling bias currents and the level of a pulse signal when the pulse signal is overlapped to DC bias currents and a semiconductor laser is driven by using a drive signal obtained by the overlapped currents. CONSTITUTION:A PCM input signal from a gate circuit G is converted into a level, which can be driven, by a driver DRIV, an output from the driver and bias currents from a comparator COM2 are overlapped by an adder ADD, and the semiconductor laser LD is driven by a signal from the adder. The backward output of laser beams from a laser LD is received by using an avalanche photodiode APD, an output from the photodiode is amplified by a wide zone amplifier AMP, and added to a peak detector DET2, and the peak value is clamped first, and DCs are cut by a DET3, and pulse height is detected. The difference is compared with reference voltage by the comparator COM2, pulse height is compared by a COM1, and bias currents and the pulse signal are controlled separately.
摘要翻译：目的：当脉冲信号与直流偏置电流重叠时，通过独立控制偏置电流和脉冲信号电平来保持峰值恒定，同时保持所需的消光比，并且通过使用由重叠电流。构成：来自门电路G的PCM输入信号被转换成可由驱动器DRIV驱动的电平，驱动器的输出和来自比较器COM2的偏置电流由加法器ADD重叠，半导体激光器 LD由来自加法器的信号驱动。通过使用雪崩光电二极管APD接收来自激光LD的激光束的反向输出，来自光电二极管的输出被宽带放大器AMP放大，并被加到峰值检测器DET2，首先钳位峰值， DC被DET3切断，并检测脉冲高度。将差值与比较器COM2的参考电压进行比较，脉冲高度由COM1进行比较，偏置电流和脉冲信号分别进行控制。

68. 发明专利

JPS59985A Drive circuit for semiconductor laser 失效
标题翻译：用于半导体激光器的驱动电路
公开(公告)号：JPS59985A
公开(公告)日：1984-01-06
申请号：JP10931282
申请日：1982-06-25
申请人： Nec Corp
发明人： KURIYAMA NOBUMI
IPC分类号： H01S5/068 , H01S5/0683
CPC分类号： H01S5/06835
摘要： PURPOSE:To transmit a signal without deteriorating the light receiving characteristics of a light receiver by preventing the decrease of the light erasing ratio while holding the light output of a semiconductor laser constant. CONSTITUTION:An electric signal which is inputted to a terminal 6 is converted from voltage to current by a pulse drive circuit 1, and superposed with a bias current by a current superposing circuit 2. A light output is obtained at a terminal 7 by driving the laser 3 with the current. On the other hand, the monitoring light of the laser outputted from a terminal 31 is converted to a current by a photoelectric converter 4. After this current is detected as the mean value or peak value by a bias current control circuit 5, it is compared with the reference voltage, and amplified, thereby controlling the bias current. As a result, the light output of the laser is stabilized. The bias current is applied to a signal pulse current control circuit 8. The circuit 8 controls the signal pulse current in response to the magnitude of the bias current, thereby preventing the decrease of the light erasing rate.
摘要翻译：目的：通过在保持半导体激光器的光输出保持恒定的同时防止光擦除率的降低来传输信号而不劣化光接收器的光接收特性。构成：输入到端子6的电信号由脉冲驱动电路1从电压转换为电流，并由电流叠加电路2与偏置电流重叠。通过驱动端子7在端子7处获得光输出激光3与电流。另一方面，从端子31输出的激光的监视光由光电转换器4转换为电流。在通过偏置电流控制电路5将该电流作为平均值或峰值检测后，进行比较用参考电压进行放大，从而控制偏置电流。结果，激光的光输出稳定。偏置电流被施加到信号脉冲电流控制电路8.电路8响应于偏置电流的大小来控制信号脉冲电流，从而防止光擦除速率的降低。

69. 发明专利

JPS59984A Light output stabilizing circuit 失效
标题翻译：光输出稳定电路
公开(公告)号：JPS59984A
公开(公告)日：1984-01-06
申请号：JP10931182
申请日：1982-06-25
申请人： Nec Corp
发明人： KURIYAMA NOBUMI
IPC分类号： H01S5/068 , H01S5/0683
CPC分类号： H01S5/06835
摘要： PURPOSE:To prevent the deterioration of the light receiving characteristics of a light receiver by maintaining the light erasing ratio constant while holding the light output of a semiconductor laser constant. CONSTITUTION:An input signal of a terminal 7 is converted from voltage to current by a pulse drive circuit 1, and superposed with the bias current of a semiconductor laser 3 in a motor driven superposing circuit 2. The laser 3 is driven by the current to obtain a light output at the terminal 8. The monitoring light from the laser outputted from a terminal 3-1 is converted to a current by a photoelectric converter 4, a signal component is detected by a signal component detector 5 with the current, compared with the reference voltage by a bias current control circuit 6, and amplified, thereby controlling the bias current. As a result, the light output of the laser is stabilized. The output of the converter 4 is applied via a mean value detector 9 to a signal pulse current control circuit 11. The circuit 11 compares it with the signal of the mean value detector 10 to control the signal pulse current, thereby maintaining the light erasing ratio constant.
摘要翻译：目的：通过在保持半导体激光器的光输出保持恒定的同时保持光擦除率恒定来防止光接收器的光接收特性的劣化。构成：通过脉冲驱动电路1将端子7的输入信号从电压转换为电流，并与电动机驱动叠加电路2中的半导体激光器3的偏置电流重叠。激光器3由电流驱动在端子8处获得光输出。从端子3-1输出的激光器的监视光由光电转换器4转换成电流，信号分量由信号分量检测器5用电流检测，与参考电压由偏置电流控制电路6放大，从而控制偏置电流。结果，激光的光输出稳定。转换器4的输出通过平均值检测器9施加到信号脉冲电流控制电路11.电路11将其与平均值检测器10的信号进行比较，以控制信号脉冲电流，从而保持光消除率不变。

70. 发明专利

JPS58225745A Semiconductor laser transmitting circuit 失效
标题翻译：半导体激光发射电路
公开(公告)号：JPS58225745A
公开(公告)日：1983-12-27
申请号：JP10876482
申请日：1982-06-24
申请人： Fujitsu Ltd
发明人： MOTEGI MITSUHIRO
IPC分类号： H04B10/572 , H01S5/068 , H01S5/0683 , H04B10/07 , H04B10/293 , H04B10/524 , H04B10/564
CPC分类号： H04B10/50 , H01S5/06835
摘要： PURPOSE:To stability a light output level and a light output waveform, by using a TM polarized component in an LED light emission range for controlling the bias current of a semiconductor laser LD and controlling the amplitude or pulse width of an input current. CONSTITUTION:When light generated by the semiconductor laser LD11 is entered into a polarizer 12, TE polarized components parallel to a stripe surface advance stright and are led out as a transmit light output and TM polarized components perpendicular to the stripe surface are deflected at right angles to enter a photodetector 13, whose output signal is inputted to an amplifier 14. A control and driving circuit 15 generates and supplies a bias current corresponding to the input signal to the LD11 and the bias current is so controlled that the output Lo' of the emitted bias light from the LD11 is constant. Rear light from the LD11, on the other hand, is converted by a photodetector 16 into an electric signal, which is inputted to an amplifier 17. A control and driving circuit 18 generates a pulse current having pulse amplitude or width corresponding to the input signal and it is supplied to the LD11 together with the bias current in superposition to perform feedback control, holding the light output electric power of the LD11 constant.
摘要翻译：目的：通过在LED发光范围内使用TM偏振分量来控制半导体激光器LD的偏置电流并控制输入电流的幅度或脉冲宽度，来稳定光输出电平和光输出波形。构成：当由半导体激光器LD11产生的光进入偏振器12时，与条纹表面平行的TE极化分量预先突出并作为透射光输出引出，并且垂直于条形表面的TM偏振分量以直角偏转进入其输出信号被输入到放大器14的光电检测器13.控制和驱动电路15产生并向LD11提供与输入信号相对应的偏置电流，并且偏置电流被如此控制，使得输出信号的输出Lo' 来自LD11的发射偏置光是恒定的。另一方面，来自LD11的后灯由光电检测器16转换成输入到放大器17的电信号。控制和驱动电路18产生具有对应于输入信号的脉冲幅度或宽度的脉冲电流并且与叠加的偏置电流一起提供给LD11，以执行反馈控制，保持LD11的光输出电力恒定。

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