公开(公告)号：US07046435B2

公开(公告)日：2006-05-16

申请号：US10937625

申请日：2004-09-09

申请人： Hyun-Cheol Shin ,  Jeong-Seok Lee ,  Ho-In Kim ,  In-Kuk Yun ,  Seung-Woo Kim ,  Seong-Taek Hwang

发明人： Hyun-Cheol Shin ,  Jeong-Seok Lee ,  Ho-In Kim ,  In-Kuk Yun ,  Seung-Woo Kim ,  Seong-Taek Hwang

IPC分类号： H01S3/00

CPC分类号： H01S5/50 ,  H01S5/028 ,  H01S5/101 ,  H01S5/1064 ,  H01S5/1085 ,  H01S5/16 ,  H01S5/227 ,  H01S2301/176

摘要： A reflective semiconductor optical amplifier includes a substrate, a waveguide with a buried heterostructure formed by sequentially laminating a lower cladding, an active layer, and an upper cladding on the substrate, the waveguide including, sequentially, respective straight line, curved and tapered waveguide regions. A current blocking layer surrounds the waveguide to prevent electric current from flowing outside the active layer. Selectively etching portions of the current blocking layer and the substrate around the waveguide forms a trench to reduce parasitic capacitance. Further features include a window region on one end of the tapered waveguide region, an anti-reflection surface on one end of the window region, and a high-reflection surface on one end of the straight line waveguide region.

摘要翻译： 反射半导体光放大器包括基板，具有通过在基板上依次层叠下包层，有源层和上包层而形成的掩埋异质结构的波导，波导依次包括相应的直线，弯曲和锥形波导区域 。 电流阻挡层围绕波导以防止电流流过有源层外部。 选择性地蚀刻电流阻挡层和波导周围的衬底的部分形成沟槽以减小寄生电容。 另外的特征包括在锥形波导区域的一端上的窗口区域，窗口区域的一端上的防反射面以及直线波导区域的一端的高反射面。

公开(公告)号：US20060083272A1

公开(公告)日：2006-04-20

申请号：US11200729

申请日：2005-08-10

申请人： Du-Chang Heo ,  Jeong-Seok Lee ,  Seong-Taek Hwang

发明人： Du-Chang Heo ,  Jeong-Seok Lee ,  Seong-Taek Hwang

IPC分类号： H01S3/30

CPC分类号： B82Y20/00 ,  H01S5/1092 ,  H01S5/2072 ,  H01S5/34 ,  H01S5/3414 ,  H01S5/4043 ,  H01S5/4087 ,  H01S2301/18

摘要： Disclosed are a broadband light source and a method of fabricating the same. The method includes the steps of forming a lower clad on a substrate, forming an active layer having a multiple well structure on the lower clad (so as to generate light having a broad wavelength band), sequentially depositing an upper clad and a cap on the active layer, depositing a cover layer including at least two regions having bandgaps different from each other on the cap, and heat-treating the broadband light source including the cover layer.

摘要翻译： 公开了一种宽带光源及其制造方法。 该方法包括以下步骤：在衬底上形成下包层，在下包层上形成具有多孔结构的有源层（以产生具有宽波长带的光），顺序地将上覆层和帽盖放置在 活性层，在盖上沉积包括至少两个具有彼此不同的带隙的区域的覆盖层，以及对包括覆盖层的宽带光源进行热处理。

公开(公告)号：US20050088724A1

公开(公告)日：2005-04-28

申请号：US10847109

申请日：2004-05-17

申请人： Jeong-Seok Lee ,  Ho-In Kim ,  In-Kuk Yun ,  Seung-Woo Kim ,  Hyun-Cheol Shin ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Jeong-Seok Lee ,  Ho-In Kim ,  In-Kuk Yun ,  Seung-Woo Kim ,  Hyun-Cheol Shin ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H01S5/50 ,  G02B6/28 ,  H01S3/00 ,  H01S3/23 ,  H01S5/00 ,  H04B10/2507 ,  H04B10/40 ,  H04B10/50 ,  H04B10/60 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/506 ,  H01S3/2333 ,  H01S3/2383 ,  H01S5/005 ,  H01S5/5072 ,  H01S2301/02

摘要： Disclosed are optical signal transmission apparatus including a reflective gain-clamped semiconductor optical amplifier and optical communication system using the optical signal transmission apparatus, which can improve modulation speed and optical power by effectively suppressing intensity noise of an incoherent light source. The optical signal transmission apparatus comprises a light source; a reflective gain-clamped semiconductor optical amplifier to generate gain-clamped optical signals having a substantially constant output intensity in a gain saturation region; a wavelength division multiplexing apparatus configured to spectrum-slice light from the light source, provide the spectrum-sliced light to the reflective gain-clamped semiconductor optical amplifier, and multiplex optical signals gain-clamped by the reflective gain-clamped optical amplifier. and a circulator for inputting the light generated by the light source to the wavelength division multiplexing apparatus, and outputting the optical signal multiplexed by the wavelength division multiplexing apparatus to a transmission link.

摘要翻译： 公开了包括使用光信号传输装置的反射增益钳位半导体光放大器和光通信系统的光信号传输装置，其可以通过有效地抑制非相干光源的强度噪声来提高调制速度和光功率。 光信号传输装置包括光源; 反射增益钳位半导体光放大器，用于产生在增益饱和区中具有基本上恒定的输出强度的增益钳位光信号; 波分多路复用装置，被配置为对来自光源的光进行光谱分片，将光谱切片光提供给反射增益钳位半导体光放大器，并且复用由反射增益钳位光放大器增益钳位的光信号。 以及循环器，用于将由光源产生的光输入到波分复用装置，并将由波分多路复用装置复用的光信号输出到传输链路。

公开(公告)号：US20050041971A1

公开(公告)日：2005-02-24

申请号：US10792322

申请日：2004-03-03

申请人： Jea-Hyuck Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Jea-Hyuck Lee ,  Jeong-Seok Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H01S3/10 ,  H04B10/2507 ,  H04J14/00 ,  H04J14/02

CPC分类号： H04B10/296 ,  H04B10/2503 ,  H04J14/02

摘要： A multi-wavelength optical transmitter which multiplexes a plurality of channels having different wavelengths into an optical signal for output includes lasers for generating mode-locked channels by corresponding incoherent light received in the lasers. The transmitter also has a semiconductor optical amplifier for amplifying, while in a gain saturation state, the optical signal multiplexed by the multiplexer/demultiplexer. Light from a broadband light source is directed by a circulator to the multiplexer/demultiplexer for demultiplexing among the lasers. Light back from the lasers is multiplexed and then directed by the circulator and amplified by a semiconductor optical amplifier for output external to the transmitter.

摘要翻译： 将具有不同波长的多个信道多路复用到用于输出的光信号中的多波长光发射机包括用于通过在激光器中接收的相应非相干光产生锁模信道的激光器。 发射机还具有半导体光放大器，用于在增益饱和状态下放大由多路复用器/解复用器多路复用的光信号。 来自宽带光源的光由循环器引导到多路复用器/解复用器，用于激光器之间的解复用。 来自激光器的光反射被多路复用，然后由循环器引导并由半导体光放大器放大，以便在发射机外部输出。

公开(公告)号：US07236295B2

公开(公告)日：2007-06-26

申请号：US10874429

申请日：2004-06-23

申请人： In-Kuk Yun ,  Jeong-Seok Lee ,  Seung-Woo Kim ,  Seong-Taek Hwang

发明人： In-Kuk Yun ,  Jeong-Seok Lee ,  Seung-Woo Kim ,  Seong-Taek Hwang

IPC分类号： H01S5/50

CPC分类号： H01S5/14 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/028 ,  H01S2301/02

摘要： A broadband light source is disclosed. The broadband light source includes a semiconductor optical amplifier for generating and amplifying light of a broadband wavelength, the amplifier having a first end and a second end and a mirror spaced from the second end of the semiconductor optical amplifier to reflect the light, which is provided by the semiconductor optical amplifier, back to the semiconductor optical amplifier, wherein the semiconductor optical amplifier amplifies the light reflected from the mirror and outputs the amplified light to the first end of the semiconductor optical amplifier. The light source further including at least one lens system to converge light passing through the amplifier ends.

摘要翻译： 公开了宽带光源。 宽带光源包括用于产生和放大宽带波长的光的半导体光放大器，放大器具有第一端和第二端以及与半导体光放大器的第二端间隔开的反射光的反射器 通过半导体光放大器返回到半导体光放大器，其中半导体光放大器放大从反射镜反射的光，并将放大的光输出到半导体光放大器的第一端。 该光源还包括至少一个透镜系统以会聚通过放大器端的光。

公开(公告)号：US20060147210A1

公开(公告)日：2006-07-06

申请号：US11250228

申请日：2005-10-14

申请人： Seung-Woo Kim ,  Jeong-Seok Lee ,  Seong-Taek Hwang

发明人： Seung-Woo Kim ,  Jeong-Seok Lee ,  Seong-Taek Hwang

IPC分类号： H04J14/00

CPC分类号： H04J14/02 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/06

摘要： A broadband light source includes: at least two semiconductor optical active devices for generating TE polarized lights of different wavelength bands; an optical coupler for dividing each of the TE polarized lights input from each of the semiconductor optical active devices into two TE polarized lights, and outputting the two TE polarized lights, the two TE polarized lights including a first TE polarized light and a second TE polarized light; a first optical line for transmitting the first TE polarized light, while maintaining a polarization mode of the first TE polarized light; a second optical line for converting the second TE polarized light into a TM polarized light; a polarization beam combiner for combining the first TE polarized light and the TM polarized light to generate a polarization-independent light; and a band separator for separating and outputting the polarization-independent light according to wavelength bands.

摘要翻译： 宽带光源包括：用于产生不同波长带的TE偏振光的至少两个半导体光学有源器件; 用于将从每个半导体光学有源器件输入的每个TE偏振光分成两个TE偏振光并输出两个TE偏振光的光耦合器，所述两个TE偏振光包括第一TE偏振光和第二TE偏振光 光; 用于在保持第一TE偏振光的偏振模式的同时传输第一TE偏振光的第一光线; 用于将第二TE偏振光转换为TM偏振光的第二光线; 偏振光束组合器，用于组合第一TE偏振光和TM偏振光以产生偏振无关的光; 以及用于根据波段分离和输出偏振无关的光的带分离器。

公开(公告)号：US20050105575A1

公开(公告)日：2005-05-19

申请号：US10852519

申请日：2004-05-24

申请人： Seung-Woo Kim ,  Jeong-Seok Lee ,  In-Kuk Yun ,  Seong-Taek Hwang

发明人： Seung-Woo Kim ,  Jeong-Seok Lee ,  In-Kuk Yun ,  Seong-Taek Hwang

IPC分类号： G02B6/42 ,  G02B6/293 ,  H01S5/00 ,  H01S5/02 ,  H01S5/022 ,  H01S5/10 ,  H01S5/14

CPC分类号： H01S5/02216 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/1092 ,  H01S5/141

摘要： A multi-channel light source includes a semiconductor optical amplifier for generating light of a wide wavelength band and outputting the generated light through a first end and a second end. The source further includes a Fabry-Perot (FP) resonator for resonating the light inputted from the semiconductor optical amplifier to generate an FP fringe and outputting the FP fringe to the semiconductor optical amplifier. The semiconductor optical amplifier amplifies the FP fringe inputted from the FP resonator and outputs the amplified FP fringe through the first end.

摘要翻译： 多通道光源包括用于产生宽波段的光的半导体光放大器，并通过第一端和第二端输出产生的光。 该源还包括用于使从半导体光放大器输入的光谐振以产生FP条纹并将FP条纹输出到半导体光放大器的法布里 - 珀罗（FP）谐振器。 半导体光放大器放大从FP谐振器输入的FP条纹，并通过第一端输出放大的FP条纹。

公开(公告)号：US07110170B2

公开(公告)日：2006-09-19

申请号：US10780306

申请日：2004-02-17

申请人： Jeong-Seok Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Jeong-Seok Lee ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H01S3/00

CPC分类号： H01S5/50 ,  H01S5/0264 ,  H01S5/0425 ,  H01S5/2004 ,  H01S5/22 ,  H01S5/5072

摘要： A gain-clamped semiconductor optical amplifier having photo detectors which are integrated on a single crystal substrate can detect optical intensities at input/output terminals of the optical amplifier. The semiconductor optical amplifier includes a first conductive semiconductor substrate, a semiconductor optical amplifier formed on the semiconductor substrate so as to have a horizontal-direction lasing structure, and a first and a second photo detector formed respectively at positions of the semiconductor substrate spaced horizontally from an input side and an output side of the semiconductor optical amplifier so as to measure intensities of an input signal and an output signal of the semiconductor optical amplifier.

摘要翻译： 集成在单晶衬底上的具有光电检测器的增益钳位半导体光放大器可以检测光放大器的输入/输出端的光强度。 半导体光放大器包括第一导电半导体衬底，形成在半导体衬底上以便具有水平方向激光结构的半导体光放大器，以及第一和第二光电检测器，分别形成在半导体衬底的水平方向 半导体光放大器的输入侧和输出侧，以测量半导体光放大器的输入信号和输出信号的强度。

公开(公告)号：US07081643B2

公开(公告)日：2006-07-25

申请号：US10781508

申请日：2004-02-18

申请人： Jeong-Seok Lee ,  Jung-Koo Kang ,  Seong-Taek Hwang

发明人： Jeong-Seok Lee ,  Jung-Koo Kang ,  Seong-Taek Hwang

IPC分类号： H01L29/22

CPC分类号： H01S5/0607 ,  H01S5/0425 ,  H01S5/1206 ,  H01S5/1237 ,  H01S5/125 ,  H01S5/2275 ,  H01S5/50 ,  H01S5/5072

摘要： A gain-clamped semiconductor optical amplifier having a horizontal lasing structure in which an oscillation direction of a laser is different from an amplification direction of a signal, and a method for manufacturing the gain-clamped semiconductor optical amplifier. The gain-clamped semiconductor optical amplifier includes a gain layer for amplifying an optical signal. A Bragg lattice layer is formed on both sides of the gain layer along a longitudinal direction of the gain layer for enabling light having a corresponding wavelength to resonate in a direction vertical to the longitudinal direction of the gain layer. A passive light waveguide restrains light resonating between lattices of the Bragg lattice layer. An electrode supplies current to the gain layer, and a current-blocking layer prevents current from flowing to an area other than the gain layer.

摘要翻译： 一种具有水平激光结构的增益钳位半导体光放大器，其中激光器的振荡方向与信号的放大方向不同，以及用于制造增益钳位半导体光放大器的方法。 增益钳位半导体光放大器包括用于放大光信号的增益层。 沿着增益层的纵向方向在增益层的两侧形成布拉格晶格层，使得具有相应波长的光能够在垂直于增益层的纵向的方向上共振。 无源光波导抑制在布拉格晶格层的晶格之间谐振的光。 电极向增益层提供电流，并且电流阻挡层防止电流流向除了增益层之外的区域。

公开(公告)号：US20050185262A1

公开(公告)日：2005-08-25

申请号：US10874429

申请日：2004-06-23

申请人： In-Kuk Yun ,  Jeong-Seok Lee ,  Seung-Woo Kim ,  Seong-Taek Hwang

发明人： In-Kuk Yun ,  Jeong-Seok Lee ,  Seung-Woo Kim ,  Seong-Taek Hwang

IPC分类号： G02B6/42 ,  H01S5/00 ,  H01S5/022 ,  H01S5/024 ,  H01S5/028 ,  H01S5/14 ,  H04B10/04

CPC分类号： H01S5/14 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02415 ,  H01S5/028 ,  H01S2301/02

摘要： A broadband light source is disclosed. The broadband light source includes a semiconductor optical amplifier for generating and amplifying light of a broadband wavelength, the amplifier having a first end and a second end and a mirror spaced from the second end of the semiconductor optical amplifier to reflect the light, which is provided by the semiconductor optical amplifier, back to the semiconductor optical amplifier, wherein the semiconductor optical amplifier amplifies the light reflected from the mirror and outputs the amplified light to the first end of the semiconductor optical amplifier. The light source further including at least one lens system to converge light passing through the amplifier ends.

摘要翻译： 公开了宽带光源。 宽带光源包括用于产生和放大宽带波长的光的半导体光放大器，该放大器具有第一端和第二端以及与该半导体光放大器的第二端间隔开以反射所述光的反射镜 通过半导体光放大器返回到半导体光放大器，其中半导体光放大器放大从反射镜反射的光，并将放大的光输出到半导体光放大器的第一端。 该光源还包括至少一个透镜系统以会聚通过放大器端的光。