KR20030034607A - Offset removable Optical swtching device - Google Patents

Offset removable Optical swtching device Download PDF

Info

Publication number
KR20030034607A
KR20030034607A KR1020010066259A KR20010066259A KR20030034607A KR 20030034607 A KR20030034607 A KR 20030034607A KR 1020010066259 A KR1020010066259 A KR 1020010066259A KR 20010066259 A KR20010066259 A KR 20010066259A KR 20030034607 A KR20030034607 A KR 20030034607A
Authority
KR
South Korea
Prior art keywords
offset
optical
reflector
optical switch
switching device
Prior art date
Application number
KR1020010066259A
Other languages
Korean (ko)
Inventor
문성욱
채경수
권영아
강호관
Original Assignee
한국과학기술연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국과학기술연구원 filed Critical 한국과학기술연구원
Priority to KR1020010066259A priority Critical patent/KR20030034607A/en
Publication of KR20030034607A publication Critical patent/KR20030034607A/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0833—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a micromechanical device, e.g. a MEMS mirror, DMD
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/354—Switching arrangements, i.e. number of input/output ports and interconnection types
    • G02B6/3544—2D constellations, i.e. with switching elements and switched beams located in a plane
    • G02B6/3546—NxM switch, i.e. a regular array of switches elements of matrix type constellation
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • G02B6/3564—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details
    • G02B6/3584—Mechanical details of the actuation mechanism associated with the moving element or mounting mechanism details constructional details of an associated actuator having a MEMS construction, i.e. constructed using semiconductor technology such as etching

Abstract

PURPOSE: An optical switch capable of removing an offset is provided to remove the tube loss due to the offset generated by the thickness of mirror surface when the optical switch is operated, thereby increasing the reliability and efficiency of the transmission data in the application of optical communication. CONSTITUTION: An optical switch capable of removing an offset includes a reflection plate(200) for changing an optical path to an output terminal by reflecting an input light beam(100) inputted from an input terminal installed at a reflection surface in an arbitrary direction to minimize the offset, a driving device(220) for generating a driving force to move by deforming the position of the reflection plate(200) to an arbitrary direction and an anchor(260) provided with a supporting beam(240) for supporting the reflection plate(200) and the structure of the driving device(220) to the ground.

Description

옵셋 제거가 가능한 광스위칭 장치{Offset removable Optical swtching device}Offset removable optical swtching device

본 발명은 옵셋(Offset) 제거가 가능한 광스위칭 장치에 관한 것이다. 보다상세하게는 광스위칭시 사용되는 반사 거울면의 위치를 중앙에서 임의의 위치로 이동시켜 제작함으로서 옵셋이 제거되는 광스위칭 장치에 관한 것이다.The present invention relates to an optical switching device capable of eliminating offset. More specifically, the present invention relates to an optical switching device in which offsets are removed by moving a position of a reflective mirror surface used in optical switching from an center to an arbitrary position.

광스위치 소자는 전기(자기) 광학 효과를 이용하여 외부에서 인가한 전계에 의해 광 빔을 온,오프하는 장치, 혹은 액정 물질의 광학적 성질이 외부에서 주어지는 전계나 압력 등에 의해 변화하는 현상을 이용한 스위치 소자이다.An optical switch element is a switch using a device that turns on or off a light beam by an externally applied electric field using an electro (magnetic) optical effect, or a phenomenon in which optical properties of a liquid crystal material are changed by an external electric field or pressure. Element.

이러한 광스위치 소자로는 광 빔을 온오프하기 위해 섬유 자체를 전자석 등으로 기계적으로 전환하도록 하는 기계 구동형이 널리 사용되고 있다.As such an optical switch element, a machine-driven type for mechanically converting a fiber itself into an electromagnet or the like for turning on and off a light beam is widely used.

도 1은 옵셋을 제거할 수 없는 종래의 2 ×2 광스위치 장치의 단면도이다.1 is a cross-sectional view of a conventional 2x2 optical switch device in which an offset cannot be removed.

도 1에 도시된 광스위치 구조를 살펴 보면, 3면으로 둘러싸여 있는 측벽(10)과, 상기 측벽(10)과 일정 거리 떨어져서 중앙부에 위치하여 입력단으로부터 입사되는 입사광(20)을 측벽(10)의 반사면과 반사시켜 출력단으로 광로를 변화시키는 반사판(30), 상기 반사판(30)과 결합되어 반사판(30)을 구동하는 구동소자(40)로 이루어져 있다.Referring to the structure of the optical switch shown in FIG. 1, the side wall 10 surrounded by three surfaces and the incident light 20 incident from the input terminal are located at the center part at a predetermined distance from the side wall 10. It is composed of a reflecting plate 30 for reflecting the reflective surface to change the optical path to the output terminal, the driving element 40 coupled to the reflecting plate 30 to drive the reflecting plate 30.

입사광(20)을 전달하는 광스위칭 과정의 살펴 보면, 입력단으로부터 입사된 입사광(20)은 거울의 반사판(30)에 의해 반사되어 출력단으로 곧바로 전달되어 정렬되게 된다.Looking at the light switching process for transmitting the incident light 20, the incident light 20 incident from the input end is reflected by the reflecting plate 30 of the mirror is directly transmitted to the output end is aligned.

상기와 같은 2 ×2 구조의 광스위치 소자는 제작 측면에 있어서 입사광(20)이 반사없이 직진하여 출력단에 광손실이 없이 전달될 경우에는 문제가 발생되지 않는다.The optical switch device having the 2 × 2 structure as described above does not cause a problem when the incident light 20 goes straight without reflection and is transmitted to the output terminal without light loss.

그러나, 입사광(20)이 반사되어 출력단으로 전송될 경우에는 반사판(30)의두께에 의한 영향으로 입사광(20)이 정확하게 출력단에 정렬되지 못하여 옵셋(잔류편차)이 생성된다. 따라서, 입사광(20)이 전부 출력단에 전달되지 못하여 광손실이 발생된다.However, when the incident light 20 is reflected and transmitted to the output terminal, the incident light 20 is not accurately aligned at the output terminal due to the thickness of the reflecting plate 30 to generate an offset (residual deviation). Therefore, all of the incident light 20 is not transmitted to the output terminal and light loss occurs.

또한, 도 1에 도시된 바와 같이, 입,출력단의 개수가 적을 경우에는 비정렬에 의한 손실이 전체 시스템의 광 효율에는 큰 영향을 미치지 않게 된다.In addition, as shown in FIG. 1, when the number of input and output terminals is small, loss due to misalignment does not significantly affect the optical efficiency of the entire system.

그러나, 최근 증가하고 있는 전송 용량의 추세로 볼때 조만간에 수십 혹은 수백 개의 입,출력단을 갖는 광스위치 소자에 대한 수요가 요구될 것 임을 예상할 수 있다.However, with the recent trend of increasing transmission capacity, it can be expected that demand for optical switch devices having tens or hundreds of input and output stages will be required in the near future.

따라서, 도 1을 기본 구조로 하는 광스위치 장치에서는 옵셋에 의한 광손실이 전체 시스템의 광 효율에 미치는 영향을 무시할 수 없게 된다. 즉, 광스위칭 소자를 광통신에 응용하기 위해서는 저가로 제작이 가능해야 하며, 광손실이 작아야 한다.Therefore, in the optical switch device having the basic structure of FIG. 1, the influence of the optical loss due to the offset on the optical efficiency of the entire system cannot be ignored. That is, in order to apply the optical switching element to optical communication, it must be possible to manufacture at low cost and the optical loss must be small.

이에 본 발명은 상기한 문제점을 해결하기 위한 것으로서 본 발명의 목적은 반도체 기반 기술을 이용하여 제작할 수 있는 광스위치 장치를 제공하는 데 있다.Accordingly, an object of the present invention is to provide an optical switch device that can be manufactured using a semiconductor-based technology.

본 발명의 다른 목적은 광손실을 줄이기 위해 거울면의 위치를 중앙에서 임의의 방향으로 이동시켜 광스위칭시에 옵셋이 발생하지 않는 광스위칭 장치를 제공하는 데 있다.Another object of the present invention is to provide an optical switching device in which no offset occurs during optical switching by shifting the position of the mirror surface in an arbitrary direction from the center to reduce light loss.

상기한 본 발명의 목적을 달성하기 위한 기술적 사상으로써 본 발명은As a technical idea for achieving the above object of the present invention

옵셋(offset)을 최소화하는 임의의 방향에 설치된 반사면에 입력단으로부터입사되는 입사광(100)을 반사시켜 출력단으로의 광로를 변화시키는 반사판(200)과;A reflection plate 200 for changing the optical path to the output end by reflecting the incident light 100 incident from the input end on the reflection surface provided in any direction to minimize the offset;

상기 반사판(200)의 위치를 임의의 방향으로 변형시켜 이동할 수 있는 구동력을 발생시키는 구동기(220)와;A driver 220 for generating a driving force that can be moved by modifying a position of the reflector 200 in an arbitrary direction;

지지빔(240)을 구비하여 상기 반사판(200)과 구동기(240)의 구조물을 바닥에 고정시키는 앤커(260)를 포함하여 이루어진 것을 특징으로 하는 옵셋 제거가 가능한 광스위칭 장치가 제공된다.Provided with a support beam 240, there is provided an optical switching device that can remove the offset, characterized in that it comprises an anchor 260 for fixing the structure of the reflector 200 and the driver 240 on the floor.

도 1은 옵셋을 제거할 수 없는 종래 2 ×2 광스위치 장치의 단면도이다.1 is a cross-sectional view of a conventional 2x2 optical switch device in which an offset cannot be removed.

도 2는 본 발명에 따른 거울면의 위치를 변형하여 옵셋의 제거가 가능한 광스위칭 장치의 단면도이다.2 is a cross-sectional view of the optical switching device capable of removing the offset by modifying the position of the mirror surface according to the present invention.

도 3은 본 발명의 응용 예로서 도 2에 도시된 광스위칭 장치가 N ×N 광스위치로 배열된 상태를 나타낸 것이다.3 shows a state in which the optical switching device shown in FIG. 2 is arranged as an N × N optical switch as an application of the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

100 : 입사광200 : 반사판100: incident light 200: reflector

220 : 구동기240 : 지지빔220: driver 240: support beam

260 : 앤커(anchor)300 : 광파이버260: anchor 300: optical fiber

400 : 동작 전(前)의 구동기400: driver before operation

500 : 동작 후(後)의 구동기500: actuator after operation

이하, 본 발명의 실시예에 대한 구성 및 그 작용을 첨부한 도면을 참조하면서 상세히 설명하기로 한다.Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

도 2는 본 발명에 따른 거울면의 위치를 변형하여 옵셋을 제거한 광스위칭 소자의 단면도이다.2 is a cross-sectional view of the optical switching device from which the offset is removed by changing the position of the mirror surface according to the present invention.

도 2를 살펴보면, 입력단으로부터 입사되는 입사광(100)을 반사면과 반사시켜 출력단으로의 광로를 변화시키는 반사판(200)과; 상기 반사판(200)의 거울면을 구동시키는 구동기(220)와; 상기 반사판(200)과 구동기(220)의 구조물을 바닥에 고정시키는 앤커(anchor; 260)를 포함하여 이루어져 있다.Referring to Figure 2, the reflecting plate 200 for changing the light path to the output terminal by reflecting the incident light 100 incident from the input terminal with the reflective surface; A driver 220 for driving a mirror surface of the reflector 200; It includes an anchor (260) for fixing the structure of the reflector 200 and the driver 220 on the floor.

이 때, 종래에는 입사광의 광로 중앙부에 반사판(200)이 설치되어 있었으나, 본 발명에서의 반사판(200)은 옵셋(offset)을 최소화하는 임의의 방향에 설치된 반사면에 입력단으로부터 입사되는 입사광(100)을 반사시켜 출력단으로의 광로를 변화시키게 된다.At this time, the reflector 200 is conventionally provided in the center of the optical path of the incident light, the reflector 200 according to the present invention is incident light 100 incident from the input terminal to the reflecting surface provided in any direction to minimize the offset (offset) ) To change the optical path to the output stage.

또한, 상기 구동기(220)는 반사판(200)의 위치를 임의의 방향으로 변형시켜이동할 수 있는 구동력을 발생시키케 된다.In addition, the driver 220 generates a driving force capable of moving by changing the position of the reflector 200 in an arbitrary direction.

이 때, 본 발명에서는 상기 구동기(220)로서 콤비네이션(combination)형 구동기를 사용하였으나, 이에 한정하지 않고 다양한 방식의 구동기 또한 활용될 수 있다.In this case, in the present invention, a combination type driver is used as the driver 220, but various types of drivers may also be used.

또한, 상기 앤커(260)에는 지지빔(240)을 구비되어 상기 반사판(200)과 구동기(220)의 구조물을 바닥에 고정시키는 역할을 하게 된다.In addition, the anker 260 is provided with a support beam 240 serves to fix the structure of the reflector 200 and the driver 220 on the floor.

도 2에서와 같이 구성된 광스위칭 장치에서 반사면으로 사용되는 거울면 즉, 반사판(200)을 중앙에서 광이 진행하는 방향으로 위치를 변형함으로써 거울면의 두께에 의해 발생되는 광손실을 제거할 수 있다. 즉, 광스위칭시에 발생하는 옵셋을 제거할 수 있다.In the optical switching device configured as shown in FIG. have. In other words, offsets generated during optical switching can be eliminated.

도 3은 본 발명의 응용예로서 도 2에 도시된 광스위칭 장치를 배열하여 N × N 광스위치로 배열된 상태를 나타낸 것이다.FIG. 3 shows a state in which the optical switching device shown in FIG. 2 is arranged as an N × N optical switch as an application example of the present invention.

도 3을 살펴보면, N ×N 광스위치로 배열된 상태의 광스위치 장치로서 부호 300은 입,출력광이 도달하여 통과하는 광파이버를 나타내고, 부호 400과 500은 구동기의 동작 전(前)과 동작 후(後) 상태를 나타낸다.Referring to FIG. 3, reference numeral 300 denotes an optical switch device in which an input and output light reaches and passes, and reference numerals 400 and 500 denote before and after operation of the driver. (Iii) The state is shown.

즉, 광스위칭 장치의 구동기(200)를 구동시켜 광스위칭하는 경우 입사광의 광로(光路) 중앙부에 위치된 반사판(200)을 옵셋(offset)이 최소화되는 임의의 방향으로 위치를 변형시켜 반사판(200)의 한쪽 반사면에 의해 입력단으로부터 입사되는 입사광(100)을 반사시켜 출력단으로의 광로를 변화시킴으로서 광스위칭시에 발생하는 옵셋을 제거하게 된다.That is, in the case of driving the optical switch by driving the driver 200 of the optical switching device, the reflector 200 is deformed in an arbitrary direction in which an offset is minimized by the reflector 200 positioned in the center of the optical path of the incident light. By reflecting the incident light 100 incident from the input terminal by one of the reflection surface of the X), the optical path to the output terminal is changed to eliminate the offset generated during the light switching.

이상에서와 같이 본 발명에 의한 옵셋 제거가 가능한 광스위칭 장치에 따르면, 광스위칭 장치를 구동할 경우 거울면의 두께에 의해 발생되는 옵셋에 의한 관손실을 제거할 수 있다. 이는 미소기전소자(MEMS) 기술을 이용하여 제작할 수 있는 적절한 설계를 통하여 극복할 수 있음을 의미한다.As described above, according to the optical switching device capable of removing the offset according to the present invention, when driving the optical switching device, it is possible to eliminate the tube loss caused by the offset caused by the thickness of the mirror surface. This means that it can be overcome through an appropriate design that can be fabricated using micro electromechanical device (MEMS) technology.

또한, 광통신에 응용될 경우 전송데이터의 신뢰성 및 효율성을 증대시킬 수 있다.In addition, when applied to optical communication it can increase the reliability and efficiency of the transmission data.

Claims (3)

옵셋을 최소화하는 임의의 방향에 설치된 반사면에 입력단으로부터 입사되는 입사광(100)을 반사시켜 출력단으로의 광로를 변화시키는 반사판(200)과;A reflector 200 for changing an optical path to an output terminal by reflecting incident light 100 incident from an input terminal on a reflection surface provided in an arbitrary direction to minimize the offset; 상기 반사판(200)의 위치를 임의의 방향으로 변형시켜 이동할 수 있는 구동력을 발생시키는 구동기(220)와;A driver 220 for generating a driving force that can be moved by modifying the position of the reflector 200 in an arbitrary direction; 지지빔(240)을 구비하여 상기 반사판(200)과 구동기(240)의 구조물을 바닥에 고정시키는 앤커(260)를 포함하여 이루어진 것을 특징으로 하는 옵셋 제거가 가능한 광스위칭 장치.And an anchor 260 having a support beam 240 to fix the structure of the reflector plate 200 and the driver 240 to the floor. 청구항 1에 있어서, 상기 반사판(200)의 반사면은 입력단으로부터 입사되는 입사광(100)을 한쪽면으로만 반사시키는 것을 옵셋 제거가 가능한 광스위칭 장치.The optical switching device of claim 1, wherein the reflective surface of the reflective plate 200 reflects incident light from the input terminal to only one surface. 청구항 1에 있어서, 상기 광스위칭 장치는 N × N 광스위치의 배열 구조를 갖는 것을 특징으로 하는 옵셋 제거가 가능한 광스위칭 장치.The optical switching device of claim 1, wherein the optical switching device has an array structure of N × N optical switches.
KR1020010066259A 2001-10-26 2001-10-26 Offset removable Optical swtching device KR20030034607A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020010066259A KR20030034607A (en) 2001-10-26 2001-10-26 Offset removable Optical swtching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020010066259A KR20030034607A (en) 2001-10-26 2001-10-26 Offset removable Optical swtching device

Publications (1)

Publication Number Publication Date
KR20030034607A true KR20030034607A (en) 2003-05-09

Family

ID=29566511

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020010066259A KR20030034607A (en) 2001-10-26 2001-10-26 Offset removable Optical swtching device

Country Status (1)

Country Link
KR (1) KR20030034607A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6446707A (en) * 1987-08-17 1989-02-21 Nippon Telegraph & Telephone Optical path switching device
US6229640B1 (en) * 1999-08-11 2001-05-08 Adc Telecommunications, Inc. Microelectromechanical optical switch and method of manufacture thereof
EP1126303A1 (en) * 2000-02-09 2001-08-22 Agilent Technologies Inc. a Delaware Corporation Thermally actuated optical add/drop switch
US20020146199A1 (en) * 2001-04-09 2002-10-10 Adc Telecommunications, Inc. Mems optical balanced path switch
KR20030025714A (en) * 2001-09-22 2003-03-29 김덕승 Micromachined optical switch and method of manufacture thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6446707A (en) * 1987-08-17 1989-02-21 Nippon Telegraph & Telephone Optical path switching device
US6229640B1 (en) * 1999-08-11 2001-05-08 Adc Telecommunications, Inc. Microelectromechanical optical switch and method of manufacture thereof
EP1126303A1 (en) * 2000-02-09 2001-08-22 Agilent Technologies Inc. a Delaware Corporation Thermally actuated optical add/drop switch
US20020146199A1 (en) * 2001-04-09 2002-10-10 Adc Telecommunications, Inc. Mems optical balanced path switch
KR20030025714A (en) * 2001-09-22 2003-03-29 김덕승 Micromachined optical switch and method of manufacture thereof

Similar Documents

Publication Publication Date Title
US6498870B1 (en) Micromachined optomechanical switches
US6859580B2 (en) Systems and methods for overcoming stiction using a lever
JP3405528B2 (en) Optical device
KR20010102533A (en) Cantilevered microstructure methods and apparatus
WO2002052323A1 (en) Microstructure switches
US6614581B2 (en) Methods and apparatus for providing a multi-stop micromirror
US6965710B2 (en) Optical switch and its production method, and optical path-switching apparatus comprising optical switch
EP1164404A1 (en) An optical switch having an impact printer head actuator
EP1102104A2 (en) Optical switch
US7945129B2 (en) Hybrid optical switch apparatus
US6229934B1 (en) High-speed low-loss fiber-optic switches
KR20030034607A (en) Offset removable Optical swtching device
US6898342B2 (en) Fiber-aligning optical switch
US6788843B2 (en) Optical crossconnect and mirror systems
KR100343815B1 (en) Offset compensable optical switch device
JP2002365566A (en) Non-blocking mechanical fiberoptic matrix switch
US6394617B1 (en) Method and apparatus for latched bimorph optical switchs
KR100402992B1 (en) The packaging of optical switch
US7079726B2 (en) Microelectromechanical optical switch using bendable fibers to direct light signals
JP3719508B2 (en) Optical switch and optical path switching device
Marxer et al. Reflective modulators and by-pass-switches: two MEMS components for fiber optic communication
JP2003090968A (en) Optical switch
KR100715497B1 (en) MEMs TYPE OPTICAL ADD-DROP MODULE WITH DIVIDED V-TYPE MICROMIRRORS
WO2001029599A1 (en) Mems based 1xn fiber optics switch
KR20050001620A (en) Multi channel optical switch and manufacturing method thereof

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E601 Decision to refuse application