公开(公告)号：US09865991B2

公开(公告)日：2018-01-09

申请号：US15255970

申请日：2016-09-02

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H01S5/0687 ,  H01S5/10 ,  H01S5/022

CPC classification number: H01S5/10 ,  H01S5/0064 ,  H01S5/0071 ,  H01S5/0078 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/02438 ,  H01S5/0687

Abstract: Disclosed herein is a technology of effectively interrupting light reflected from a wavelength selective filter so as not to be fed back to a laser diode chip in a semiconductor laser package having a function of adjusting a relative intensity ratio of a signal of “1” and a signal of “0” using an optical filter. Since an optical interruption device according to the present invention may effectively interrupt a light feedback to the laser diode chip by adjusting characteristics of a 45 degree partial reflection mirror in an existing TO-can type laser device having the 45 degree partial reflection mirror and additionally disposing one λ/4 waveplate, unlike an optical isolator according to the related art using an existing Faraday rotator, the signals of “1” and “0” may be effectively adjusted in a TO-can type laser device having a small volume, thereby improving a function of communication.

公开(公告)号：US09634466B2

公开(公告)日：2017-04-25

申请号：US14908749

申请日：2014-05-12

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H01S5/14 ,  H01S5/022 ,  H01S5/0687

CPC classification number: H01S5/141 ,  H01S5/02212 ,  H01S5/02292 ,  H01S5/0687

Abstract: The present invention relates to an external cavity type laser provided with a wavemeter capable of precisely measuring a wavelength of a laser beam based on a transmission wavelength band of a wavelength selective filter inserted into a cavity regardless of a driving current of a laser diode chip. The external cavity type laser apparatus includes: a laser diode chip 100 emitting a laser beam; a beam feedback partial reflection mirror 500 reflecting a portion of the beam emitted from the laser diode chip 100 to feed the beam back to the laser diode chip 100; a collimating lens 200 installed on a path of a beam between the laser diode chip 100 and the beam feedback partial reflection mirror 500 to collimate the beam emitted from the laser diode chip 100; a 45-degree partial reflection mirror 300 converting a laser beam moving in parallel with a package bottom surface into a laser beam moving perpendicularly to the package bottom surface; a wavelength selective filter 400 transmitting a beam having a selected specific wavelength therethrough; a beam strength monitoring photodiode 600 disposed on a path of a beam moving from the collimating lens 200 to the 45-degree partial reflection mirror 300 and transmitting through the 45-degree partial reflection mirror 300; and a wavelength monitoring photodiode 700 disposed on a path of a beam moving from the wavelength selective filter 400 to the 45-degree partial reflection mirror 300 and transmitting through the 45-degree partial reflection mirror 300. A magnitude of a photocurrent flowing to the wavelength monitoring photodiode 700 is changed depending on a strength of a beam output oscillated in the laser diode chip 100 and a reflectivity at the wavelength selective filter 400, and a photocurrent flowing to the beam strength monitoring photodiode 600 is determined by the strength of the beam output outputted from the laser diode chip 100. Therefore, a value obtained by dividing the photocurrent flowing to the wavelength monitoring photodiode 700 by the photocurrent flowing to the beam strength monitoring photodiode 600 depends on only the reflectivity at the wavelength selective filter 400. Therefore, the value obtained by dividing the photocurrent flowing to the wavelength monitoring photodiode 700 by the photocurrent flowing to the beam strength monitoring photodiode 600 provides information on the wavelength of the laser beam based on the transmission band wavelength of the wavelength selective filter 400, and the wavelength of the laser beam may be figured out by measuring the value, and may be very precisely determined to be a predetermined wavelength.

公开(公告)号：US10171198B2

公开(公告)日：2019-01-01

申请号：US14889457

申请日：2015-08-10

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H04J14/02 ,  H04B10/67 ,  H04B10/69

Abstract: The present invention relates to A channel set up method of optical receiver with wavelength tunable filter such as an etalon filter in a TO type received wavelength-tunable optical receiver.According to the method of setting a channel in a wavelength-tunable optical receiver of the present invention, by circularly receiving communication channels within a predetermined temperature range, in which selectively receiving communication channel using two adjacent transmissive modes in the transmissive modes of a wavelength-tunable filter, it is possible to individually select and receive all communication channels with a predetermined temperature range. Further, it is possible to use all FP type etalon filters regardless of transmissive wavelength characteristics in at a specific temperature of a wavelength-tunable filter, so it is possible to reduce a manufacturing cost and power consumption of a product and increase thermal stability of a package.

公开(公告)号：US09912117B2

公开(公告)日：2018-03-06

申请号：US15256843

申请日：2016-09-06

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H01S3/08 ,  H01S3/10 ,  H01S5/06 ,  H01S5/024 ,  H01S5/14 ,  H01L21/311 ,  H01L21/768 ,  H01S3/081 ,  H01S5/022 ,  H01S5/0687 ,  H01S5/0683

CPC classification number: H01S5/0612 ,  H01L21/31116 ,  H01L21/76898 ,  H01S3/0815 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/141

Abstract: A semiconductor laser device which comprises a laser diode chip (100) that emits laser light; a 45° reflective mirror (400) that changes laser light traveling horizontally to a package bottom into laser light traveling perpendicular to the package bottom. The 45° reflective mirror (400) is a partial reflective mirror which has a partial reflection/partial transmission characteristic. An optical feedback-partial reflective mirror (500) is disposed along a path of light passing vertically through the 45° reflective mirror (400). The optical feedback-partial reflective mirror (500) supplies some of the laser light traveling through the 45° reflective mirror (400) back to the 45° reflective mirror 400 by reflecting a first portion of the laser light while transmitting a remaining portion of the laser light.

公开(公告)号：US09515454B2

公开(公告)日：2016-12-06

申请号：US14399676

申请日：2014-05-12

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H01S3/10 ,  H01S5/00 ,  H01S5/0687 ,  H04B10/50 ,  H01S5/022 ,  H01S5/024 ,  H01S5/0683

CPC classification number: H01S5/0687 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48137 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02292 ,  H01S5/02415 ,  H01S5/06837 ,  H04B10/503 ,  H01L2924/00014 ,  H01L2924/00

Abstract: A TO type laser device that can perform long-distance transmission due to a reduced line breadth of laser light. A semiconductor laser device which comprises a laser diode chip (100) that emits laser light; a wavelength-selective filter; a collimating lens (200) disposed in a light path between the laser diode chip (100) and the wavelength-selective filter and to collimate light emitted from the laser diode chip (100); a 45°-partial reflective mirror (300) disposed in a light path between the laser diode chip (100) and the wavelength-selective filter for changing laser light traveling parallel to the bottom of a package into laser light traveling perpendicularly to the bottom of the package; and an optical wavelength supervisory photodiode (500) disposed in a light path along which laser light reflecting from the wavelength-selective filter, after being emitted from the laser diode chip (100), passes through the 45°-partial reflective mirror (300).

Abstract translation: 一种TO型激光装置，能够通过减少线宽的激光进行远距离传输。 一种半导体激光装置，包括发射激光的激光二极管芯片（100）; 波长选择滤波器; 配置在激光二极管芯片（100）与波长选择滤波器之间的光路中并准直从激光二极管芯片（100）发射的光的准直透镜（200）。 设置在激光二极管芯片（100）和波长选择滤光器之间的光路中的45°反射镜（300），用于将平行于封装的底部行进的激光改变为垂直于 包装; 以及光波长监控光电二极管（500），其设置在从所述波长选择滤光器反射的激光在从所述激光二极管芯片（100）发射之后穿过所述45°反射镜（300）的光路中， 。

公开(公告)号：US09941659B2

公开(公告)日：2018-04-10

申请号：US14907078

申请日：2014-07-24

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H01S3/00 ,  H01S5/042 ,  H01S5/022 ,  H01S5/062

CPC classification number: H01S5/042 ,  H01S5/02212 ,  H01S5/02256 ,  H01S5/02276 ,  H01S5/02292 ,  H01S5/06226

Abstract: A TO can-type optical module for ultrahigh-speed communication including a laser diode chip for at least 5 Gbps. A substrate for transmitting a signal to a laser diode chip is formed by coupling an upper substrate (210) on which line patterns for transmission are formed, to a lower substrate (220) of which an upper surface has conductivity with the upper substrate (210) such that the optical module for ultrahigh-speed communication has single ended impedance of 25 ohms or differential ended impedance of 50 ohms. The substrate has a height of about 0.4 mm to which a laser diode chip, for ultrahigh-speed communication, is attached to enable an optical coupling between the laser diode chip, the lens, and the like, and may implement a hight-speed transmission line using a width of 0.6 mm or less thereby providing a substrate which is effectively embedded ina TO can-type package with a narrow mounting area.

公开(公告)号：US09547138B2

公开(公告)日：2017-01-17

申请号：US14889454

申请日：2014-08-18

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: G02B6/42 ,  G02B6/293 ,  G02B27/14 ,  G02B6/32

CPC classification number: G02B6/4215 ,  G02B6/29361 ,  G02B6/29395 ,  G02B6/325 ,  G02B6/4206 ,  G02B6/4208 ,  G02B6/4209 ,  G02B6/4246 ,  G02B27/141

Abstract: A light receiving module having a built-in wavelength-tunable wavelength-selective filter that can selectively receive light with a specific wavelength from laser light with various wavelengths emitted from an optical fiber and tune the specific wavelength. In the light receiving module including a light receiving element having a built-in wavelength-tunable wavelength-selective filter that receives laser light from an optical fiber according to the present invention, a flat plate-shaped window (240) transmitting laser light from an optical fiber (600) is formed in the light receiving element (22), a wavelength-tunable wavelength-selective filter for separating wavelengths of laser light traveling as parallel light is disposed in the light receiving element (22), and a lens (400) converting laser light from the optical fiber (600) into parallel light is disposed between the optical fiber (600) and the light receiving element (22).

Abstract translation: 一种具有内置波长可调波长选择滤光器的光接收模块，其可以选择性地接收来自具有从光纤发射的各种波长的激光的特定波长的光并调谐特定波长。 在包括具有从本发明的光纤接收激光的内置波长可调谐波长选择滤波器的光接收元件的光接收模块中，平板状窗口（240）将来自 在光接收元件（22）中形成光纤（600），在光接收元件（22）中设置用于分离作为平行光行进的激光的波长的波长可调波长选择滤波器，以及透镜 将来自光纤（600）的激光转换成平行光的光纤（600）设置在光纤（600）和光接收元件（22）之间。

公开(公告)号：US09466944B2

公开(公告)日：2016-10-11

申请号：US14399674

申请日：2014-03-25

Applicant: PHOVEL.CO.LTD.

Inventor： Jeong-Soo Kim

IPC: H01S3/10 ,  H01S5/06 ,  H01S5/024 ,  H01S5/14 ,  H01L21/311 ,  H01L21/768 ,  H01S5/0683 ,  H01S3/081 ,  H01S5/022 ,  H01S5/0687

CPC classification number: H01S5/0612 ,  H01L21/31116 ,  H01L21/76898 ,  H01S3/0815 ,  H01S5/02212 ,  H01S5/02248 ,  H01S5/02415 ,  H01S5/0683 ,  H01S5/0687 ,  H01S5/141

Abstract: The present invention relates to a compact tunable laser device that can change the oscillation laser wavelength. The laser device includes: a laser diode chip 100 that emits laser light; an optical feedback-partial reflective mirror 500 that feeds some of light emitted from the laser diode chip 100 back to the laser diode chip 100 by reflecting it; a collimating lens 300 that is disposed in a light path between the laser diode chip 100 and the optical feedback-partial reflective mirror 500 and collimates light emitted from the laser diode chip 100; a tunable-selective filter 300 of which the transmissive wavelength changes in accordance with temperature; and a 45°-reflective mirror 400 that changes laser light traveling horizontally to a package bottom into laser light traveling perpendicular to the package bottom, wherein the laser diode chip 100 or the tunable-selective filter 300 is disposed on a thermoelectric element 900 and has an oscillation wavelength changing in accordance with a change in temperature of the thermoelectric element 900.

Abstract translation: 本发明涉及一种能够改变振荡激光波长的紧凑型可调激光器件。 激光装置包括：发射激光的激光二极管芯片100; 光反馈部分反射镜500，其将从激光二极管芯片100发射的一些光反射回激光二极管芯片100; 准直透镜300，设置在激光二极管芯片100和光反馈部分反射镜500之间的光路中，并准直从激光二极管芯片100发射的光; 透射波长根据温度变化的可调谐选择滤光器300; 以及将水平方向移动到封装底部的激光的垂直于封装底部行进的激光的45°反射镜400，其中，激光二极管芯片100或可调谐选择滤光器300配置在热电元件900上，具有 振荡波长根据热电元件900的温度变化而变化。