KR970056075A - Recyclable Erbium Doped Fiber Amplifier - Google Patents

Recyclable Erbium Doped Fiber Amplifier Download PDF

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Publication number
KR970056075A
KR970056075A KR1019950066831A KR19950066831A KR970056075A KR 970056075 A KR970056075 A KR 970056075A KR 1019950066831 A KR1019950066831 A KR 1019950066831A KR 19950066831 A KR19950066831 A KR 19950066831A KR 970056075 A KR970056075 A KR 970056075A
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South Korea
Prior art keywords
optical signal
port
erbium
doped
diffraction grating
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KR1019950066831A
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Korean (ko)
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KR100345332B1 (en
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황성택
김성준
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김광호
삼성전자 주식회사
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06Construction or shape of active medium
    • H01S3/063Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067Fibre lasers
    • H01S3/06754Fibre amplifiers
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/09Processes or apparatus for excitation, e.g. pumping
    • H01S3/091Processes or apparatus for excitation, e.g. pumping using optical pumping
    • H01S3/094Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
    • H01S3/094003Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
    • H01S3/094023Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre with ASE light recycling, with reinjection of the ASE light back into the fiber, e.g. by reflectors or circulators
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/16Solid materials
    • H01S3/1601Solid materials characterised by an active (lasing) ion
    • H01S3/1603Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1608Solid materials characterised by an active (lasing) ion rare earth erbium

Abstract

본 발명은 증폭된 광을 재차 증폭하여 증폭 효율을 높이거나 전체적인 이득의 저하없이 이득을 평탄화 하는 리사이클 어븀 도핑 광섬유 증폭기(recycled erbium doped fiber amplifier)에 관한 것으로, 서큘레이터와 펌프광 및 신호광에 대하여 반사율이 높은 반사체 혹은 광섬유 회절격자 필터를 구비하여 일차 증폭에 사용되고 남은 펄프 파워를 재활용하는 동시에 일차 증폭된 광신호를 반사체로 반사시켜 재증폭함으로써, 증폭 효율이 높아 펌프 레이저 다이오드의 출력을 최대로 하지 않더라도 필요한 이득을 충분히 얻을 수 있어 광섬유 증폭기의 수명을 연장할 수 있거나, 전체적인 이득을 떨어뜨리지 않으면서 이득을 평탄화시켜 CATV용 등으로 그 활용도가 높은 장점이 있다.The present invention relates to a recycled erbium-doped fiber amplifier (AE), which amplifies the amplified light again to increase amplification efficiency or flatten the gain without lowering the overall gain. The present invention relates to a circulator, pump light, and signal light. Equipped with a high reflector or optical fiber diffraction grating filter, the remaining pulp power used for primary amplification is recycled, and the amplified optical signal is reflected and reamplified by the reflector, so that the amplification efficiency is high. The gain can be sufficiently obtained to extend the life of the optical fiber amplifier, or the gain can be flattened without lowering the overall gain, so that it can be utilized for CATV.

Description

리사이클 어븀 도핑 광섬유 증폭기Recyclable Erbium Doped Fiber Amplifier

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제5도는 본 발명에 따른 이득 평탄화 리사이클 어븀 도핑 광섬유 증폭기의 개략적 구성도.5 is a schematic structural diagram of a gain flattened recycling erbium-doped fiber amplifier according to the present invention.

Claims (6)

3개의 입출력 포트를 갖는 방향성 광신호 전달 수단; 증폭용 에너지원인 펌프광을 제공하는 펌프 레이저 다이오드; 상기 방향성 광신호 전달 수단으로부터 입력되는 광신호와 상기 펌프광을 결합하여 주는 파장 분할 멀티플렉서; 상기 파장 분할 멀티플렉서를 통해 입력되는 상기 광신호를 함께 입력되는 상기 펌프광의 에너지를 사용하여 증폭시켜주는 어븀 도핑 광섬유; 상기 어븀 도핑 광섬유에 직접 접속되어 상기 증폭에 사용되고 남은 상기 펌프광을 상기 어븀 도핑 광섬유로 반사시켜 주는 제1반사형 광섬유 회절격자 필터; 및 상기 제1반사형 광섬유 회절 격자 필터에 직접 접속되어 상기 증폭된 광신호 중에서 이득이 상대적으로 낮은 파장대의 광신호를 상기 어븀 도핑 광섬유로 반사시켜 주는 제2광반사 수단;을 구비하여 된 것을 특징으로 하는 리사이클 어븀 도핑 광섬유 증폭기.Directional optical signal transmitting means having three input / output ports; A pump laser diode providing a pump light that is an energy source for amplification; A wavelength division multiplexer for combining the pump light with the optical signal input from the directional optical signal transmitting means; An erbium-doped optical fiber for amplifying the optical signal input through the wavelength division multiplexer using the energy of the pump light input together; A first reflection type optical fiber diffraction grating filter which is directly connected to the erbium-doped optical fiber and reflects the pump light used for the amplification to the erbium-doped optical fiber; And second light reflecting means connected directly to the first reflecting optical fiber diffraction grating filter to reflect an optical signal having a relatively low gain among the amplified optical signals to the erbium-doped optical fiber. Recycled erbium-doped fiber amplifier. 제1항에 있어서, 상기 방향성 광신호 전달 수단은, 제1포트, 제2포트 및 제3포트를 가지고, 상기 제1포트로 입력되는 광신호는 반드시 제2포트로만 출력되게 하며, 상기 제2포트로 입력되는 광신호는 반드시 제3포트로만 출력되게 하며, 상기 제3포트로 입력되는 광신호는 상기 제1 및 제2포트중 어느 포트로도 출력되게 하지 않는 서큘레이터로 이루어진 것을 특징으로 하는 리사이클 어븀 도핑 광섬유 증폭기.The method of claim 1, wherein the directional optical signal transmitting means has a first port, a second port and a third port, and the optical signal input to the first port to be output only to the second port, the second The optical signal input to the port must be output only to the third port, the optical signal input to the third port is characterized in that it is made of a circulator which does not output to any of the first and second ports Recycled Erbium Doped Fiber Amplifier. 제1항에 있어서, 상기 제2반사형 회절격자 필터는 상기 어븀 도핑 광섬유에 직접 접속되고, 상기 제1반사형 회절격자 필터는 상기 제2반사형 회절격자 필터에 직접 접속된 것을 특징으로 하는 리사이클 어븀 도핑 광섬유 증폭기.The recycling method according to claim 1, wherein the second reflection diffraction grating filter is directly connected to the erbium-doped optical fiber, and the first reflection diffraction grating filter is directly connected to the second reflection diffraction grating filter. Erbium doped fiber amplifier. 3개의 입출력 포트를 갖는 방향성 광신호 전달 수단; 증폭용 에너지원인 펌프광을 제공하는 펌프 레이저 다이오드; 상기 방향성 광신호 전달 수단으로부터 입력되는 광신호와 상기 펌프광을 결합하여 주는 제1파장 분할 멀티플렉서; 상기 제1파장 분할 멀티플렉서를 통해 입력되는 상기 광신호를 함께 입력되는 상기 펌프광의 에너지를 사용하여 증폭시켜주는 어븀 도핑 광섬유; 상기 증폭된 광신호 및 상기 증폭에서 사용되고 남은 상기 펌프광을 분할하여 주는 제2파장 분할 멀티플렉서; 상기 제2파장 분할 멀티플렉서에 직접 접속되어 상기 제2파장 분할 멀티플렉서에서 분할된 상기 증폭에 사용되고 남은 상기 펌프광을 상기 어븀 도핑 광섬유로 반사시켜주는 제1반사형 회절격자 필터; 및 상기 제2파장 분할 멀티플렉서에 직접 접속되어 상기 제2파장 분할 멀티플렉서에서 분할된 상기 증폭된 광신호 중에서 이득이 상대적으로 낮은 파장대의 광신호를 상기 어븀 도핑 광섬유로 반사시켜주는 제2반사형 회절격자 필터;를 구비하여 된 것을 특징으로 하는 리사이클 어븀 도핑 광섬유 증폭기.Directional optical signal transmitting means having three input / output ports; A pump laser diode providing a pump light that is an energy source for amplification; A first wavelength division multiplexer which combines the optical signal input from the directional optical signal transmitting means and the pump light; An erbium-doped optical fiber for amplifying the optical signal input through the first wavelength division multiplexer using the energy of the pump light input together; A second wavelength division multiplexer for dividing the amplified optical signal and the pump light used in the amplification; A first reflection type diffraction grating filter connected directly to the second wavelength division multiplexer and reflecting the pump light used for the amplification divided by the second wavelength division multiplexer to the erbium-doped optical fiber; And a second reflection type diffraction grating that is directly connected to the second wavelength division multiplexer and reflects an optical signal having a relatively low gain in the amplified optical signal divided by the second wavelength division multiplexer to the erbium-doped optical fiber. Recycled erbium-doped fiber amplifier, characterized in that provided with a filter. 제4항에 있어서, 상기 방향성 광신호 전달 수단은, 제1포트, 제2포트 및 제3포트를 가지고, 상기 제1포트로 입력되는 광신호는 반드시 제2포트로만 출력되게 하며, 상기 제2포트로 입력되는 광신호는 반드시 제3포트로만 출력되게 하며, 상기 제3포트로 입력되는 광신호는 상기 제1 및 제2포트중 어느 포트로도 출력되게 하지 않는 서큘레이터로 이루어진 것을 특징으로 하는 리사이클 어븀 도핑 광섬유 증폭기.The method of claim 4, wherein the directional optical signal transmitting means has a first port, a second port and a third port, and the optical signal input to the first port to be output only to the second port, the second The optical signal input to the port must be output only to the third port, the optical signal input to the third port is characterized in that it is made of a circulator which does not output to any of the first and second ports Recycled Erbium Doped Fiber Amplifier. 제4항에 있어서, 상기 제1반사형 회절격자 필터는 980㎚ 파장의 광에 대하여 90% 이상의 반사율을 가지고, 상기 제2반사형 회절격자 필터는 1550㎚ 파장의 광에 대하여 90% 이상의 반사율을 가지는 것을 특징으로 하는 리사이클 어븀 도핑 광섬유 증폭기.The method of claim 4, wherein the first reflection type diffraction grating filter has a reflectivity of 90% or more for light of 980nm wavelength, the second reflection type diffraction grating filter has a reflectance of 90% or more for light of 1550nm wavelength A recycled erbium-doped optical fiber amplifier, having a. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950066831A 1995-12-29 1995-12-29 Recycled erbium doped fiber amplifier KR100345332B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426319B1 (en) * 2000-01-31 2004-04-08 가부시키가이샤 무라타 세이사쿠쇼 Piezoelectric Ceramic and Manufacturing Method Therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100426319B1 (en) * 2000-01-31 2004-04-08 가부시키가이샤 무라타 세이사쿠쇼 Piezoelectric Ceramic and Manufacturing Method Therefor

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