公开(公告)号：WO1997026688A2

公开(公告)日：1997-07-24

申请号：PCT/US1997000306

申请日：1997-01-10

Applicant: SDL, INC.

Inventor： SDL, INC. ,  WAARTS, Robert, G. ,  SANDERS, Steven ,  WELCH, David, F. ,  SCIFRES, Donald, R.

IPC: H01S03/06

CPC classification number: H01S3/094003 ,  H01S3/06729 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06787 ,  H01S3/094026 ,  H01S3/094042 ,  H01S3/094076 ,  H01S3/094096 ,  H01S3/09415 ,  H01S3/1301 ,  H01S2301/02

Abstract: Two approaches are provided for achieving an optical amplifier system capable of producing high peak power, high energy pulse outputs while suppressing scattering noise. The first approach relates to an optical amplifier system which has at least one laser diode pulsed or cw pumped double clad fiber amplifier utilized for receiving a high frequency modulated injected signal pulse of short duration from the laser diode, via the fiber core, for amplification by coupling pump light into the inner cladding of the fiber. The average signal power is sufficient to saturate the gain of the fiber so as to minimize significant onset and buildup of forward and backward scattering noise. The duty cycle of the injected signal source pulse is chosen to allow adequate gain recovery in the fiber amplifier between pulses. The second approach relates to a cascaded optical amplifier system having at least two optical amplifying stages with two pulsed pump sources provided and two amplifying media, the first of which receives the injection and at least one pump signal wherein the injection pulsed signal is amplified to a first power and energy level. The second amplifying medium, optically coupled to the first, amplifies the first level signal to a second level amplified, injection pulsed signal. The duty cycle of the injection pulsed optical signal is synchronized with the first and second pulsed pump signals with the first pulsed pump signal having a different duration in the duty cycle than the second pulsed pump signal.

Abstract translation: 提供两种方法来实现能够产生高峰值功率，高能量脉冲输出同时抑制散射噪声的光放大器系统。 第一种方法涉及一种光放大器系统，其具有至少一个激光二极管脉冲或双泵浦双包层光纤放大器，用于经由光纤芯从激光二极管接收短持续时间的高频调制注入信号脉冲，以便通过光纤芯放大 将泵浦光耦合到光纤的内包层中。 平均信号功率足以使光纤的增益饱和，从而最小化正向和反向散射噪声的显着开始和累积。 选择注入的信号源脉冲的占空比以允许在脉冲之间的光纤放大器中的足够的增益恢复。 第二种方法涉及一种具有至少两个具有两个脉冲泵浦源的光放大级的级联光放大器系统和两个放大介质，其中第一放大介质接收注入和至少一个泵浦信号，其中将注入脉冲信号放大到 第一电力和能源水平。 光耦合到第一放大介质的第二放大介质将第一电平信号放大到第二电平放大的注入脉冲信号。 注入脉冲光信号的占空比与第一和第二脉冲泵浦信号同步，其中第一脉冲泵浦信号在占空比上具有与第二脉冲泵浦信号不同的持续时间。

公开(公告)号：WO1997014066A2

公开(公告)日：1997-04-17

申请号：PCT/US1996015950

申请日：1996-10-03

Applicant: SDL, INC.

Inventor： SDL, INC. ,  OLESKEVICH, Tanya

IPC: G02B06/26

CPC classification number: G02B6/4203 ,  B24B19/226 ,  G02B6/4206

Abstract: An optical coupling system for improving the coupling efficiency of an elliptical light beam into optical fibre (20) consists of a cylindrical concave microlens (10) on the end facet of the optical fibre (20) in conjunction with a pair of bulk optic asphere lenses (50 and 60). A method of producing a cylindrical concave microlens (10) according to the invention consists of translating a fine wire (100) across the end facet of an optical fibre (20) so as to create a cylindrical groove (10).

Abstract translation: 一种用于提高椭圆光束到光纤（20）的耦合效率的光耦合系统由光纤（20）的端面上的圆柱形凹形微透镜（10）与一对体光学非球面透镜 （50和60）。 根据本发明的制造圆柱形凹形微透镜（10）的方法包括跨越光纤（20）的端面平移细线（100），以便产生圆柱形凹槽（10）。

公开(公告)号：WO1996011539A2

公开(公告)日：1996-04-18

申请号：PCT/US1995013301

申请日：1995-10-04

Applicant: SDL, INC.

Inventor： SDL, INC. ,  SCIFRES, Donald, R.

IPC: H04L00/00

CPC classification number: H04B10/1149 ,  H04W84/12

Abstract: An infrared laser diode wireless local area network for communication between spatially dispersed terminals (22, 30, 40; 56, 58, 60, 62) such as computers which may be located in a single room (20) or in adjacent rooms (50, 52, 64). The lasers (90, 120, 140, 157) may be tuned to emit at varying frequencies for wavelength multiplexing, or a plurality of lasers (138) each having a different output frequency can be connected with each terminal. A receiver (26, 34, 44; 72, 80, 76, 84) connected to each terminal may similarly detect only a single narrow waveband or may detect a plurality of such wavebands. A transceiver (68, 70) may be employed for signal transmission between separate rooms. High speed data modulation of the carrier waves is provided with MOPA (90) or similar lasers, and broad angular dispersion of the output is achieved by such lasers along with dispersive lenses (132).

Abstract translation: 一种用于在空间分散的终端（22,30,40; 56,58,60,62）之间进行通信的红外激光二极管无线局域网，诸如可以位于单个房间（20）或相邻房间（50， 52,64）。 可以将激光器（90,120,140,​​157）调谐为以波长多路复用的变化频率发射，或者可以与每个终端连接每个具有不同输出频率的多个激光器（138）。 连接到每个终端的接收器（26,34,44,72,80,96,84）可以类似地仅检测单个窄波段或者可以检测多个这样的波段。 可以采用收发器（68,70）来在分开的房间之间进行信号传输。 载波的高速数据调制具有MOPA（90）或类似的激光器，并且通过这种激光器与色散透镜（132）一起实现了输出的宽角度色散。

公开(公告)号：WO1995020811A1

公开(公告)日：1995-08-03

申请号：PCT/US1995000581

申请日：1995-01-12

Applicant: SDL, INC.

Inventor： SDL, INC. ,  WAARTS, Robert, G. ,  SCIFRES, Donald, R. ,  WELCH, David, F. ,  LANG, Robert, J.

IPC: G09G03/22

CPC classification number: G02B6/14 ,  G02B6/4249 ,  G02B26/0833 ,  G02B27/2228 ,  G09G3/3406 ,  G09G2310/0235 ,  H01S5/4025 ,  H01S5/4087 ,  H04N13/324 ,  H04N13/334 ,  H04N13/337

Abstract: A display system in which lasers scanlessly illuminate the pixels of a spatially modulating display panel (11, 13, 15), such as a liquid crystal display or micromirror array. At least three sources at least one of which is a laser with each different wavelengths are used, such as laser diode-based sources (81, 83, 85) producing red, green and blue light. The laser may be pulsed rapidly in sequence to provide time multiplexed illumination of all of the display pixels or may be operated in continuous (cw) mode, using color filters on the display, phase plates (147) or microlens arrays to image light spots (148) of each color only on designated pixels. Two sets of laser sources (123), either orthogonally linearly polarized or at slight different wavelengths, can be used to create 3-D images. Each set may illuminate a different display panel, one for each eye, or the two sets may be time multiplexed using the same display panel (125). A viewer has polarizing or bandpass filters in front of each eye to separate the binocular images. Fiberoptic coupling (99) of the laser sources (81, 83, 85, 87) can be used to physically separate these sources and their power supply from the display panel (115).

Abstract translation: 一种显示系统，其中激光器扫描地照射诸如液晶显示器或微镜阵列的空间调制显示面板（11,13,15）的像素。 使用至少三个源，其中至少一个是具有每个不同波长的激光器，例如产生红色，绿色和蓝色光的基于激光二极管的光源（81,83,85）。 激光器可以按顺序快速脉冲以提供所有显示像素的时间多路复用照明，或者可以连续（cw）模式使用显示器上的滤色器，相位板（147）或微透镜阵列成像光点 148）每个颜色只在指定的像素上。 可以使用两组正交线性偏振或稍微不同波长的激光源（123）来创建3-D图像。 每个组可以照亮不同的显示面板，每个眼睛一个，或者两组可以使用相同的显示面板（125）进行时间复用。 观众在每只眼睛前面具有偏光或带通滤镜，以分离双目图像。 可以使用激光源（81,83,85,87）的光纤耦合（99）来物理地将这些源及其电源与显示面板（115）分离。

公开(公告)号：WO1997015969A2

公开(公告)日：1997-05-01

申请号：PCT/US1996016593

申请日：1996-10-18

Applicant: SDL, INC.

Inventor： SDL, INC. ,  NAGARAJAN, Radhakrishnan ,  MAJOR, Jo., S., Jr.

IPC: H01S03/19

CPC classification number: H01S5/3434 ,  B82Y20/00 ,  H01S5/068 ,  H01S5/34306 ,  H01S5/34313 ,  H04B10/504 ,  H04B10/6911 ,  H04B10/6932

Abstract: An optical transmission link has both a transmitter module and a receiver module operable under uncooled conditions, i.e., without the need of costly cooling equipment, such as thermoelectric coolers. The optical transmission system includes both a semiconductor laser diode source and an optical receiver module that are both designed to operate uncooled under high frequencies (e.g., GHz range) over a wide temperature range without significant changes in signal bandwidth and at temperatures in excess of 125 DEG C. Compensation is provided to reduce the effect of photodiode noise and amplifier noise. In addition, temperature compensation can be provided that provides for overall reduction in receiver noise across the bandwidth of the receiver module through maintenance of a temperature environment optimizing receiver performance.

Abstract translation: 光传输链路具有在不冷却条件下可操作的发射器模块和接收器模块，即不需要昂贵的冷却设备，例如热电冷却器。 光传输系统包括半导体激光二极管源和光接收器模块，其均被设计为在宽的温度范围内在高频（例如，GHz范围）下未经制冷而不经过信号带宽的显着变化而且在超过125 DEG C.提供补偿以减少光电二极管噪声和放大器噪声的影响。 此外，可以提供温度补偿，其通过维持优化接收机性能的温度环境来提供整个接收器模块的带宽上的接收机噪声的整体降低。

公开(公告)号：WO1997008791A1

公开(公告)日：1997-03-06

申请号：PCT/US1996013184

申请日：1996-08-16

Applicant: SDL, INC.

Inventor： SDL, INC. ,  OLESKEVICH, Tanya ,  BERRANG, Peter, Gottfried

IPC: H01S03/06

CPC classification number: G02B6/02 ,  C03B37/01234 ,  C03B37/027 ,  C03B2201/10 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2203/04 ,  C03B2203/06 ,  C03B2203/12 ,  C03B2203/18 ,  C03B2203/20 ,  C03B2203/22 ,  G02B6/02066 ,  G02B6/03633 ,  G02B6/14 ,  G02B2006/0209 ,  H01S3/06708

Abstract: An optical fibre having a single mode absorptive core (10) whose position, relative to the cross-sectional plane of the inner multimode cladding (12), varies along the length of the fibre. The periodicity and the magnitude of the relative displacement of the core (10) with respect to the cladding (12) are such that the transfer of radiation from the inner multimode cladding (12) to the core (10) is substantially improved over conventional fibres.

Abstract translation: 具有单模吸收芯（10）的光纤，其相对于内多模包层（12）的横截面的位置沿着光纤的长度而变化。 芯（10）相对于包层（12）的相对位移的周期性和幅度使得从内部多模包层（12）到芯（10）的辐射传输比常规纤维 。

公开(公告)号：WO1997001204A1

公开(公告)日：1997-01-09

申请号：PCT/US1996010747

申请日：1996-06-19

Applicant: SDL, INC.

Inventor： SDL, INC. ,  LANG, Robert, J. ,  OSINSKI, Julian, S. ,  WELCH, David, F.

IPC: H01S03/19

CPC classification number: H01S5/10 ,  H01S5/0618 ,  H01S5/1057 ,  H01S5/20 ,  H01S5/50

Abstract: A semiconductor light amplifying medium (11; 23) has reduced self-focusing and optical filamentation for providing higher power coherent outputs in broad-area laser and amplifier devices (Figs. 1 and 2). In one embodiment, a longitudinally inhomogeneous active region (13; 25) has alternating segments of first gain portions (15; 27) and second compensating portions (17; 29). The compensating portions have a negative self-focusing parameter [ DIFFERENTIAL n/ DIFFERENTIAL P] (Figs. 3 and 10) and may be light absorbing (negative gain) regions with negative antiguiding factor alpha (Figs. 4A-4C and 5) or light amplifying (positive gain) regions with positive antiguiding factor alpha (Figs. 6A-6B and 7A-7B). The alpha -parameter is defined as the ratio of refractive index change per change in gain, as a function of carrier density. In a second embodiment, the medium may have longitudinally varying peak filament period [Kpk] so that filaments beginning to form in one portion of the active region are subsequently dispersed in a succeeding portion, slowing filament growth. In addition to self-focusing compensation, media with a lower alpha -parameter are provided by increasing the barrier height in quantum well active regions (Figs. 8A-8B), straining (Fig. 9) or p-doping the active region, or a combination of these methods.

Abstract translation: 半导体光放大介质（11; 23）具有减少的自聚焦和光纤丝化，用于在广域激光和放大器装置中提供更高功率的相干输出（图1和图2）。 在一个实施例中，纵向非均匀有源区（13; 25）具有第一增益部分（15; 27）和第二补偿部分（17; 29）的交替段。 补偿部分具有负的自聚焦参数[差分n /差分P]（图3和图10），并且可以是具有负抗原因子α（图4A-4C和5）或光的吸光（负增益）区域 具有正抗原因子α的放大（正增益）区域（图6A-6B和7A-7B）。 α参数定义为每增益变化的折射率变化率，作为载流子密度的函数。 在第二个实施方案中，介质可以具有纵向变化的峰长丝周期[Kpk]，使得开始在有源区域的一部分中形成的长丝随后分散在随后的部分中，从而减慢长丝生长。 除了自聚焦补偿之外，通过增加量子阱活性区域（图8A-8B）中的势垒高度，应变（图9）或p掺杂有源区域来提供具有较低α参数的介质，或 这些方法的组合。

公开(公告)号：WO1996010855A1

公开(公告)日：1996-04-11

申请号：PCT/US1995003498

申请日：1995-03-21

Applicant: SDL, INC.

Inventor： SDL, INC. ,  NAM, Derek, W. ,  WELCH, David, F. ,  WAARTS, Robert, G.

IPC: H01S03/10

CPC classification number: H01S5/02415 ,  G02F1/377 ,  G02F2001/3548 ,  H01S3/0092 ,  H01S3/06754 ,  H01S3/09415 ,  H01S3/2375 ,  H01S5/0092 ,  H01S5/02248 ,  H01S5/02446 ,  H01S5/0612 ,  H01S5/06256 ,  H01S5/0687 ,  H01S5/4087

Abstract: A laser system which features a distributed Bragg reflector (DBR) or a distributed feedback (DFB) tunable laser (11) coupled to a quasi-phasematched (QPM) waveguide (31; 16) of nonlinear material (13). The DBR laser is tuned either thermally (14; 51, 53) or via current injection (Itune), or both, converting the output of a red laser into blue. Thermal tuning provides coarse adjustment while injection current tuning provides fine adjustment. Intensity modulation or pulsed output may be provided by application of a modulation signal (Imod) to the DBR laser. Another embodiment provides frequency modulation (Vfsk) of the laser. In yet another embodiment, a high power laser (103) pumped fiber amplifier (101) is disposed between the laser (11) and the waveguide (16).

Abstract translation: 一种具有分布布拉格反射器（DBR）或分布式反馈（DFB）可调谐激光器（11）的激光系统，其耦合到非线性材料（13）的准同相（QPM）波导（31; 16）。 DBR激光器通过热（14; 51,53）或通过电流注入（Itune）或两者进行调谐，将红色激光器的输出转换为蓝色。 热调整提供粗调，而注入电流调节提供精细调整。 强度调制或脉冲输出可以通过向DBR激光器施加调制信号（Imod）来提供。 另一个实施例提供了激光器的频率调制（Vfsk）。 在另一个实施例中，高功率激光器（103）泵浦光纤放大器（101）设置在激光器（11）和波导（16）之间。