公开(公告)号：US20090141747A1

公开(公告)日：2009-06-04

申请号：US11994085

申请日：2006-06-29

申请人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Koji Kudo ,  Shinya Sudo ,  Mads L. Nielsen

发明人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Koji Kudo ,  Shinya Sudo ,  Mads L. Nielsen

IPC分类号： H01S3/10

CPC分类号： H01S5/141

摘要： In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single-peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry-Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).

摘要翻译： 在包括具有半导体光放大器（2）的外部空腔（20）并通过反馈外部光进行激光振荡操作的外腔波长可调激光器件中，具有至少单峰反射的波长可调谐镜（7） 在激光波长调谐范围内的光谱特性被放置在外腔（20）的一端，并且由外腔（20）的有效长度确定的法布里 - 珀罗模式间隔不小于1/10倍 波长可调镜（7）的反射带全宽度的最大半数的10倍以上。

公开(公告)号：US08144738B2

公开(公告)日：2012-03-27

申请号：US13165288

申请日：2011-06-21

申请人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Koji Kudo ,  Shinya Sudo ,  Mads L. Nielsen

发明人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Koji Kudo ,  Shinya Sudo ,  Mads L. Nielsen

IPC分类号： H01S3/10 ,  H01S3/08

CPC分类号： H01S5/141

摘要： In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).

摘要翻译： 在包括具有半导体光放大器（2）的外部空腔（20）并通过反馈外部光进行激光振荡操作的外腔波长可调激光器件中，具有至少一个单峰反射光谱的波长可调谐镜（7） 在激光波长调谐范围内的特征放置在外腔（20）的一端，由外腔（20）的有效长度确定的法布里珀罗模式间隔不小于1/10倍，不大于 10倍波长可调镜（7）的反射带全宽半最大值。

公开(公告)号：US07991024B2

公开(公告)日：2011-08-02

申请号：US11994085

申请日：2006-06-29

申请人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Koji Kudo ,  Shinya Sudo ,  Mads. L Nielsen

发明人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Koji Kudo ,  Shinya Sudo ,  Mads. L Nielsen

IPC分类号： H01S3/13 ,  H01S3/08

CPC分类号： H01S5/141

摘要： In an external cavity wavelength tunable laser device including an external cavity (20) which includes a semiconductor optical amplifier (2) and performs laser oscillation operation by feeding back external light, a wavelength tunable mirror (7) having at least a single-peak reflection spectrum characteristic within a laser wavelength tuning range is placed on one end of the external cavity (20), and a Fabry-Perot mode interval determined by the effective length of the external cavity (20) is not less than 1/10 times and not more than 10 times the reflection band full width half maximum of the wavelength tunable mirror (7).

摘要翻译： 在包括具有半导体光放大器（2）的外部空腔（20）并通过反馈外部光进行激光振荡操作的外腔波长可调激光器件中，具有至少单峰反射的波长可调谐镜（7） 在激光波长调谐范围内的光谱特性被放置在外腔（20）的一端，并且由外腔（20）的有效长度确定的法布里 - 珀罗模式间隔不小于1/10倍 波长可调镜（7）的反射带全宽度的最大半数的10倍以上。

公开(公告)号：US20090257460A1

公开(公告)日：2009-10-15

申请号：US11995554

申请日：2006-07-13

申请人： Kenji Mizutani ,  Jan De Merli ,  Koji Kudo ,  Kenji Sato ,  Shinya Sudo

发明人： Kenji Mizutani ,  Jan De Merli ,  Koji Kudo ,  Kenji Sato ,  Shinya Sudo

IPC分类号： H01S3/10 ,  H01S3/00

CPC分类号： H01S5/141 ,  H01S5/028 ,  H01S5/0287 ,  H01S5/0625 ,  H01S5/0687 ,  H01S5/142

摘要： The reflectance of a semiconductor optical amplifier (1) on the side where an external cavity is formed is 0.1% at most. The finesse value obtained by dividing the period of the transmission characteristic of the wavelength selection filter (3) by the half value width of the transmission characteristic is 4 or more and 25 or less. Even when the reflectance of a cavity side end face (1bb) of the semiconductor optical amplifier (1) is about 0.1%, a wavelength accuracy of ±1.5 GHz can be achieved by setting the finesse to 4 or more. In addition, a wavelength accuracy of about ±0.5 GHz can be achieved by setting the finesse to 8 or more. In order to suppress insertion loss, it is preferable to set the finesse of the FP etalon to 25 or less. This makes it possible to implement an external cavity wavelength tunable laser with high wavelength accuracy.

摘要翻译： 半导体光放大器（1）在形成外部空腔的一侧的反射率最多为0.1％。 通过将波长选择滤波器（3）的传输特性的周期除以传输特性的半值宽度获得的精细度值为4以上且25以下。 即使当半导体光放大器（1）的腔侧端面（1bb）的反射率为约0.1％时，通过将精细度设定为4以上可以实现±1.5GHz的波长精度。 此外，通过将精细度设定为8以上可以实现约±0.5GHz的波长精度。 为了抑制插入损耗，优选将FP标准具的精细度设定为25以下。 这使得可以实现具有高波长精度的外部腔波长可调谐激光器。

公开(公告)号：US20090122817A1

公开(公告)日：2009-05-14

申请号：US12064441

申请日：2006-09-04

申请人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Shinya Sudo ,  Koji Kudo ,  Hiroyuki Yamazaki

发明人： Kenji Sato ,  Jan De Merli ,  Kenji Mizutani ,  Shinya Sudo ,  Koji Kudo ,  Hiroyuki Yamazaki

IPC分类号： H01S3/10 ,  G02B6/10

CPC分类号： G02B6/12007 ,  G02F1/313 ,  G02F2203/15 ,  G02F2203/585 ,  H01S5/02248 ,  H01S5/0687 ,  H01S5/101 ,  H01S5/1032 ,  H01S5/142

摘要： Only the light at an overlapping wavelength of the transmission characteristics of at least two wavelength selecting filters is looped, and at least one of the wavelength selecting filters varies a selected wavelength. Since a loss due to the optical filters is small and there is not a loss caused by a highly reflecting film, the output of an external-resonator variable-wavelength laser can be increased. Optical circuit component (8) divides light input from external device (1) into at least two ports. Loop waveguide (11) interconnects at least ports (9, 10) divided by optical circuit component (8) in the form of a loop. At least two first wavelength selecting filters (12, 13) are inserted in series in a path of loop waveguide (11), and have periodic transmission characteristics on a frequency axis which are different from each other. At least one of first wavelength selecting filters (12, 13) varies the selected wavelength.

摘要翻译： 只有至少两个波长选择滤波器的传输特性的重叠波长的光被环绕，并且至少一个波长选择滤波器改变选定的波长。 由于由于滤光器引起的损耗小，并且不会由高反射膜引起的损耗，所以可以增加外部谐振器可变波长激光器的输出。 光电路部件（8）将从外部设备（1）输入的光分成至少两个端口。 环形波导（11）至少以循环形式的由光电路部件（8）划分的端口（9,10）互连。 至少两个第一波长选择滤波器（12,13）串联插入到环形波导（11）的路径中，并且在频率轴上具有彼此不同的周期性传输特性。 第一波长选择滤光器（12,13）中的至少一个改变所选择的波长。