公开(公告)号：US20170025819A1

公开(公告)日：2017-01-26

申请号：US15106580

申请日：2013-12-25

Applicant: ACCELINK TECHNOLOGIES CO., LTD

Inventor： Yanfeng Fu ,  Yong Luo ,  Di Zhang ,  Xuesheng Tang ,  Kun Qian ,  Yi Tang ,  Shenglei Hu ,  Qianggao Hu

IPC: H01S5/14 ,  H01S5/0683 ,  H01S3/08 ,  H01S3/105 ,  H01S5/068 ,  H01S3/102

CPC classification number: H01S5/143 ,  H01S3/08086 ,  H01S3/102 ,  H01S3/105 ,  H01S5/068 ,  H01S5/0683 ,  H01S5/141

Abstract: A Raman pump laser control apparatus comprises a wavelength division multiplexer, a tap coupler, a photoelectric detector, an analogue amplification processing circuit, an analogue-to-digital converter, a fast Raman pump control unit, an digital-analog converter, and a Raman pump laser. The fast Raman pump control unit, after having known anticipated output light power of the Raman pump laser, based on a direct relationship between a current anticipated output light power of the Raman pump laser and input digital quantity that is needed by the digital-analog converter, uses a feedforward control mechanism so that actual output light power of the Raman pump laser fastly approximates the anticipated output light power thereof, and then synchronously combines with a feedback control mechanism so that the actual output light power of the Raman pump laser is precisely locked on the anticipated output light power, thereby achieving fast and precise control of the Raman pump laser.

Abstract translation: 拉曼泵激光控制装置包括波分多路复用器，抽头耦合器，光电检测器，模拟放大处理电路，模数转换器，快速拉曼泵控制单元，数模转换器和拉曼 泵激光器。 基于拉曼泵浦激光器的当前预期输出光功率与数模转换器所需的输入数字量之间的直接关系，在已知拉曼泵浦激光器的预期输出光功率之后，快速拉曼泵控制单元 使用前馈控制机构，使得拉曼泵激光器的实际输出光功率快速近似其预期输出光功率，然后与反馈控制机构同步组合，使得拉曼泵浦激光器的实际输出光功率被精确锁定 在预期的输出光功率上，从而实现对拉曼泵浦激光器的快速和精确的控制。

公开(公告)号：US09397477B2

公开(公告)日：2016-07-19

申请号：US14432051

申请日：2012-10-29

Applicant: Accelink Technologies Co., Ltd.

Inventor： Yanfeng Fu ,  Di Zhang ,  Qianggao Hu ,  Xuesheng Tang ,  Shenglei Hu ,  Yi Tang ,  Kun Qian

IPC: H01S3/10 ,  H01S5/14 ,  H01S5/40 ,  G02B5/28 ,  H01S3/106 ,  H01S5/022 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/1343 ,  H01S5/0687

CPC classification number: H01S5/141 ,  G02B5/28 ,  G02B26/001 ,  G02F1/133553 ,  G02F1/1337 ,  G02F1/13439 ,  H01S3/1065 ,  H01S5/02284 ,  H01S5/0687 ,  H01S5/14 ,  H01S5/4062

Abstract: An external-cavity tunable laser with a flexible wavelength grid tuning function comprises a resonant cavity, collimating lenses, an optical isolator, and an output optical fiber. The resonant cavity comprises a semiconductor gain chip, a beam expander collimating lens, a combined liquid crystal tunable filter assembly, and a reflecting mirror. A current injected to the semiconductor gain chip is converted to broadband spontaneously radiating photons through electrical-to-optical conversion, and the photons are spread along a waveguide toward two sides. A part of photons with special frequencies go back and forth multiple times in the resonant cavity to form a laser after a threshold condition is met. The laser is collimated by the collimating lens, passes through the optical isolator, is coupled by the collimating lens, and enters the output optical fiber.

Abstract translation: 具有柔性波长网格调谐功能的外腔可调激光器包括谐振腔，准直透镜，光隔离器和输出光纤。 谐振腔包括半导体增益芯片，扩束器准直透镜，组合液晶可调谐滤光器组件和反射镜。 注入半导体增益芯片的电流通过电 - 光转换转换为宽带自发辐射光子，并且光子沿着波导朝向两侧扩展。 具有特殊频率的光子的一部分在谐振腔中多次来回，在满足阈值条件之后形成激光。 激光由准直透镜准直，通过光隔离器，由准直透镜耦合，并进入输出光纤。