公开(公告)号：US07920797B2

公开(公告)日：2011-04-05

申请号：US11747168

申请日：2007-05-10

申请人： Chang-Hee Lee ,  Sil-Gu Mun

发明人： Chang-Hee Lee ,  Sil-Gu Mun

IPC分类号： H04B10/06

CPC分类号： H04B10/66

摘要： The disclosure relates to an optical receiver having an apparatus for varying decision threshold level and an optical transmission system having the same. An optical receiver having an apparatus for varying decision threshold level includes a photo diode (PD) for receiving an optical signal and transforming the received optical signal into an electrical signal; a trans-impedance amplifier (TIA) for pre-amplifying the electrical signal transformed by the PD; a limiting amplifier (LA) for deciding the electrical signal amplified by the TIA as either level 0 or level 1 and for amplifying the decision signal; a clock and data recovery (CDR) for generating a clock and data from the amplified decision signal by the LA; and a control circuit for adjusting a decision threshold level depending on the received optical signal power by the PD and for providing the adjusted decision threshold level with the LA.

摘要翻译： 本公开涉及一种具有用于改变判定阈值电平的装置的光接收机和具有其的光传输系统。 具有用于改变判定阈值电平的装置的光接收机包括：光电二极管（PD），用于接收光信号并将接收到的光信号变换为电信号; 用于对由PD变换的电信号进行预放大的跨阻抗放大器（TIA）; 限制放大器（LA），用于将由TIA放大的电信号判定为0级或1级，并用于放大判定信号; 用于由LA从放大的判定信号产生时钟和数据的时钟和数据恢复（CDR）; 以及控制电路，用于根据PD接收到的光信号功率调整判定阈值电平，并提供与LA的调整后的判定阈值电平。

公开(公告)号：US07773838B2

公开(公告)日：2010-08-10

申请号：US12513741

申请日：2006-11-14

申请人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon ,  Hoon-Keun Lee

发明人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon ,  Hoon-Keun Lee

IPC分类号： G02B6/28

CPC分类号： H04J14/02 ,  H04J14/0201 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J2014/0253

摘要： The present invention discloses a network architecture for upgrading a legacy time division multiplexing-passive optical network (TDM-PON) to a wavelength division multiplexing-passive optical network (WDM-PON) based next-generation passive optical network (next-generation PON), wherein the legacy TDM-PON comprises: a central office (CO) having a first optical line termination (OLT); a remote node (RN) having a splitter; a single mode fiber (SMF) connecting the first OLT and the splitter; and a first group of one or more optical network terminations (ONTs) being connected to the splitter by a first group of one or more distribution fibers, and wherein the network architecture further comprises: in case that the next-generation PON is a WDM-PON, a first apparatus for combining and splitting wavelength bands being positioned between the SMF and the first OLT, in order to add a second OLT to be used for the WDM-PON within the CO or within another CO which is located in a position different from the CO, while sharing the SMF; a second apparatus for combining and splitting wavelength bands being positioned at a front terminal of the splitter; and an arrayed waveguide grating (AWG) being connected to the second apparatus for combining and splitting wavelength bands within the RN, and being connected to a second group of one or more ONTs by a second group of one or more distribution fibers within the RN or within another RN which is located in a position different from the RN.

摘要翻译： 本发明公开了一种用于将传统时分复用无源光网络（TDM-PON）升级为基于波分多路复用无源光网络（WDM-PON）的下一代无源光网络（下一代PON）的网络架构， ，其中所述传统TDM-PON包括：具有第一光线路终端（OLT）的中心局（CO）; 具有分离器的远程节点（RN）; 连接第一OLT和分离器的单模光纤（SMF）; 以及由第一组一个或多个分配光纤连接到分离器的第一组一个或多个光网络终端（ONT），并且其中所述网络架构还包括：在下一代PON是WDM- PON是用于组合和分离位于SMF和第一OLT之间的波长带的第一装置，以便添加用于CO内的WDM-PON或位于不同位置的另一CO内的WDM-PON的第二OLT 从CO共享SMF; 用于组合和分离位于分离器的前端的波长带的第二装置; 和连接到第二装置的阵列波导光栅（AWG），用于组合和分离RN内的波段，并且由RN内的一个或多个分配光纤的第二组连接到一个或多个ONT的第二组，或者 位于与RN不同的位置的另一RN内。

公开(公告)号：US20100054740A1

公开(公告)日：2010-03-04

申请号：US12513741

申请日：2006-11-14

申请人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon ,  Hoon-Keun Lee

发明人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon ,  Hoon-Keun Lee

IPC分类号： H04J14/00 ,  H04J14/08 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04J14/0201 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0282 ,  H04J2014/0253

摘要： The present invention discloses a network architecture for upgrading a legacy time division multiplexing-passive optical network (TDM-PON) to a wavelength division multiplexing-passive optical network (WDM-PON) based next-generation passive optical network (next-generation PON), wherein the legacy TDM-PON comprises: a central office (CO) having a first optical line termination (OLT); a remote node (RN) having a splitter; a single mode fiber (SMF) connecting the first OLT and the splitter; and a first group of one or more optical network terminations (ONTs) being connected to the splitter by a first group of one or more distribution fibers, and wherein the network architecture further comprises: in case that the next-generation PON is a WDM-PON, a first apparatus for combining and splitting wavelength bands being positioned between the SMF and the first OLT, in order to add a second OLT to be used for the WDM-PON within the CO or within another CO which is located in a position different from the CO, while sharing the SMF; a second apparatus for combining and splitting wavelength bands being positioned at a front terminal of the splitter; and an arrayed waveguide grating (AWG) being connected to the second apparatus for combining and splitting wavelength bands within the RN, and being connected to a second group of one or more ONTs by a second group of one or more distribution fibers within the RN or within another RN which is located in a position different from the RN.

摘要翻译： 本发明公开了一种用于将传统时分复用无源光网络（TDM-PON）升级为基于波分多路复用无源光网络（WDM-PON）的下一代无源光网络（下一代PON）的网络架构， ，其中所述传统TDM-PON包括：具有第一光线路终端（OLT）的中心局（CO）; 具有分离器的远程节点（RN）; 连接第一OLT和分离器的单模光纤（SMF）; 以及由第一组一个或多个分配光纤连接到分离器的第一组一个或多个光网络终端（ONT），并且其中所述网络架构还包括：在下一代PON是WDM- PON是用于组合和分离位于SMF和第一OLT之间的波长带的第一装置，以便添加用于CO内的WDM-PON或位于不同位置的另一CO内的WDM-PON的第二OLT 从CO共享SMF; 用于组合和分离位于分离器的前端的波长带的第二装置; 和连接到第二装置的阵列波导光栅（AWG），用于组合和分离RN内的波段，并且由RN内的一个或多个分配光纤的第二组连接到一个或多个ONT的第二组，或者 位于与RN不同的位置的另一RN内。

公开(公告)号：US20080232807A1

公开(公告)日：2008-09-25

申请号：US12064229

申请日：2006-11-14

申请人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon

发明人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon

IPC分类号： H04J14/02

CPC分类号： H04L12/66

摘要： The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.

摘要翻译： 本发明公开了通过使用具有高频谱效率的调制格式，能够对光信号进行高带宽传输的波分复用无源光网络（WDM-PON）。 根据本发明的WDM-PON通过使用其中频谱效率（每单位带宽的传输比特数）高的调制格式，以较低的成本在经济上（以较低的成本）提供了更大的容量和更高带宽的传输，同时使用低噪声 光源的一部分。

公开(公告)号：US08442400B2

公开(公告)日：2013-05-14

申请号：US13288289

申请日：2011-11-03

申请人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon

发明人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon

IPC分类号： H04J14/00

CPC分类号： H04L12/66

摘要： The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.

摘要翻译： 本发明公开了通过使用具有高频谱效率的调制格式，能够对光信号进行高带宽传输的波分复用无源光网络（WDM-PON）。 根据本发明的WDM-PON通过使用其中频谱效率（每单位带宽的传输比特数）高的调制格式，以较低的成本在经济上（以较低的成本）提供了更大的容量和更高带宽的传输，同时使用低噪声 光源的一部分。

公开(公告)号：US20120213519A1

公开(公告)日：2012-08-23

申请号：US13201193

申请日：2010-02-12

申请人： Chang-Hee Lee ,  Joon-Young Kim ,  Jong-Hoon Lee ,  Sil-Gu Mun ,  Jung-Hyung Moon ,  Hoon-Keun Lee ,  Sang-Min Oh ,  Sang-Rok Mun

发明人： Chang-Hee Lee ,  Joon-Young Kim ,  Jong-Hoon Lee ,  Sil-Gu Mun ,  Jung-Hyung Moon ,  Hoon-Keun Lee ,  Sang-Min Oh ,  Sang-Rok Mun

IPC分类号： H04J14/02

CPC分类号： H04B10/506

摘要： The present invention discloses a transmission device of a low-noise optical signal having a low-noise multi-wavelength light source, a transmission device of broadcast signals using a low-noise multi-wavelength light source, and an optical access network having the same.The present invention uses a low-noise multi-wavelength light source (LMLS) which has sufficiently low noises at respective wavelengths, while being lasing at a multi-wavelength. Noises at respective wavelengths are not increased, even though an output light of such an LMLS passes through a wavelength division multiplexer/demultiplexer (a tunable optical filter or an arrayed waveguide grating (AWG), etc.). When using an LMLS, it is possible to embody an optical access network capable of transmitting optical signals at a high-speed and simultaneously transmitting a multicast signal. Further, when embodying an optical amplifier by using a gain medium for an LMLS, it is possible to obtain gain at a broad band without cross-coupling.

摘要翻译： 本发明公开了一种具有低噪声多波长光源的低噪声光信号的发送装置，使用低噪声多波长光源的广播信号的发送装置，以及具有该多个波长的光接收网络的光接入网 。 本发明使用在各波长处具有足够低噪声的低噪声多波长光源（LMLS），同时以多波长发射。 即使这种LMLS的输出光通过波分多路复用器/解复用器（可调光滤波器或阵列波导光栅（AWG）等），各波长处的噪声也不会增加。 当使用LMLS时，可以实现能够以高速传输光信号并且同时发送多播信号的光接入网络。 此外，当通过使用用于LMLS的增益介质来实现光放大器时，可以在没有交叉耦合的情况下获得宽带的增益。

公开(公告)号：US20120177371A1

公开(公告)日：2012-07-12

申请号：US13353204

申请日：2012-01-18

申请人： Change-Hee Lee ,  Sang-Mook Lee ,  Sil-Gu Mun

发明人： Change-Hee Lee ,  Sang-Mook Lee ,  Sil-Gu Mun

IPC分类号： H04J14/02 ,  H04B10/20

CPC分类号： H04J14/0246 ,  H04J14/0226 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0257 ,  H04J14/0282

摘要： The present invention discloses a multiple star wavelength division multiplexing passive optical network system using a wavelength assignment method.In a multiple star wavelength division multiplexing passive optical network system using a wavelength assignment method according to the present invention, only one WDM-PON system can provides services for a plurality of subscribers who is distributed in a wide range of area through multiple starring, by setting one or more band for transmitting up-stream signals as an up-stream basic band and one or more band for transmitting down-stream signals as a down-stream basic band, respectively, and by dividing each of the up-stream basic band and the down-stream basic band into a plurality of wavelength sub-bands and assigning the divided sub-bands to different areas using a wavelength division multiplexer/de-multiplexer which splits a band into two or more sub-bands.

摘要翻译： 本发明公开了一种使用波长分配方法的多星波分复用无源光网络系统。 在使用根据本发明的波长分配方法的多星波分复用无源光网络系统中，只有一个WDM-PON系统可以通过多重主播向广泛范围内分布的多个用户提供服务，通过 设置一个或多个频带，用于发送上行信号作为上行基本频带和用于发送下行流信号的一个或多个频带作为下行基本频带，并且通过划分每个上行基本频带 和下游基本频带分成多个波长子带，并使用将频带分成两个或更多个子频带的波分多路复用器/去多路复用器将分割的子带分配给不同的区域。

公开(公告)号：US20120106965A1

公开(公告)日：2012-05-03

申请号：US13318318

申请日：2010-04-23

申请人： Chang-Hee Lee ,  Sil-Gu Mun ,  Hoon-Keun Lee ,  Joon-Young Kim

发明人： Chang-Hee Lee ,  Sil-Gu Mun ,  Hoon-Keun Lee ,  Joon-Young Kim

IPC分类号： H04J14/02 ,  G02B6/293

CPC分类号： H04B10/506 ,  H04J14/0282

摘要： An optical source for wavelength division multiplexed optical network according to the present invention comprises a broadband light source (BLS); an arrayed waveguide grating (AWG) for spectrum-dividing incoherent light outputted from the BLS; a circulator being connected between the BLS and the AWG; and a plurality of un-polarized light sources (UPLS) being respectively connected to the AWG, wherein the incoherent light which is spectrum-divided by the AWG is injected into the plurality of UPLS and thus the plurality of UPLS is wavelength-locked thereto. In case of using an optical source for wavelength division multiplexed optical network and a wavelength division multiplexed-passive optical network having the same according to the present invention. It is especially possible to lower dramatically the power of incoherent light being injected into a wavelength-locked Fabry-Perot laser diode, while to enable a high transmission speed of 1.25 Gb/s or more, and possible to further lower noise intensity of a light source at given power of the incoherent light.

摘要翻译： 根据本发明的用于波分复用光网络的光源包括宽带光源（BLS）; 用于对从BLS输出的非相干光进行光谱分割的阵列波导光栅（AWG）; 连接在BLS和AWG之间的循环器; 以及分别连接到AWG的多个非偏振光源（UPLS），其中由AWG分频的非相干光被注入到多个UPLS中，因此多个UPLS被波长锁定。 在使用根据本发明的用于波分复用光网络的光源和具有该光源的波分复用无源光网络的情况下。 特别是可以显着降低注入波长锁定法布里 - 珀罗激光二极管的非相干光的功率，同时实现1.25Gb / s以上的高传输速度，并且可以进一步降低光的噪声强度 源于非相干光的给定功率。

公开(公告)号：US08078061B2

公开(公告)日：2011-12-13

申请号：US12064229

申请日：2006-11-14

申请人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon

发明人： Chang-Hee Lee ,  Ki-Man Choi ,  Sil-Gu Mun ,  Jung-Hyung Moon

IPC分类号： H04J14/00 ,  H04J14/02 ,  G02B6/36

CPC分类号： H04L12/66

摘要： The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.

摘要翻译： 本发明公开了通过使用具有高频谱效率的调制格式，能够对光信号进行高带宽传输的波分复用无源光网络（WDM-PON）。 根据本发明的WDM-PON通过使用其中频谱效率（每单位带宽的传输比特数）高的调制格式，以较低的成本在经济上（以较低的成本）提供了更大的容量和更高带宽的传输，同时使用低噪声 光源的一部分。

公开(公告)号：US20100221008A1

公开(公告)日：2010-09-02

申请号：US11991207

申请日：2006-08-29

申请人： Chang-Hee Lee ,  Sil-Gu Mun ,  Kun-Youl Park

发明人： Chang-Hee Lee ,  Sil-Gu Mun ,  Kun-Youl Park

IPC分类号： H04J14/02

CPC分类号： H04J14/0226 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： The present invention relates to a wavelength-division multiplexed passive optical network (WDM-PON) for reducing degradation in noise characteristic of a wavelength-locked Fabry-Perot Laser Diode (F-P LD). A WDM-PON for reducing degradation in a noise characteristic of a wavelength-locked F-P LD in accordance with the present invention comprises a central office (CO); a remote node (RN) being connected to the CO by a single mode fiber; and one or more optical network terminations (ONTs) being connected to the RN by one or more single mode fibers, respectively, wherein the CO comprises: a broadband light source (BLS) for generating light to be injected; a first wavelength-division multiplexing (WDM) filter for filtering for the injected light generated from the BLS and having a bandwidth wider than a bandwidth of the injected light in order to minimize a filtering effect; and one or more optical transceiver having one or more F-P LDs into which light being filtered by the first WDM filter is injected; and wherein the RN filters the injected light generated from the BLS and injects the filtered light into the one or more ONTs; and wherein the RN comprises a second WDM filter having a bandwidth wider than a bandwidth of the injected light in order to minimize a filtering effect.

摘要翻译： 本发明涉及一种用于减少波长锁定法布里 - 珀罗激光二极管（F-P LD）的噪声特性降低的波分复用无源光网络（WDM-PON）。 根据本发明的用于减少波长锁定F-P LD的噪声特性降低的WDM-PON包括中心局（CO）; 远程节点（RN）通过单模光纤连接到CO; 并且一个或多个光网络终端（ONT）分别通过一个或多个单模光纤连接到RN，其中CO包括：用于产生要注入的光的宽带光源（BLS）; 第一波分复用（WDM）滤波器，用于对从BLS产生的注入的光进行滤波，并且具有比注入的光的带宽宽的带宽，以便使滤波效果最小化; 以及一个或多个光收发器，其具有一个或多个F-P LD，其中被第一WDM滤波器滤波的光被注入; 并且其中所述RN对从所述BLS产生的注入的光进行滤波，并且将所述经滤波的光注入到所述一个或多个ONT中; 并且其中所述RN包括具有比所述注入的光的带宽更宽的带宽的第二WDM滤波器，以便使滤波效果最小化。