KR970077971A - An optical amplifier having a planarized dynamic gain - Google Patents

An optical amplifier having a planarized dynamic gain Download PDF

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Publication number
KR970077971A
KR970077971A KR1019960017208A KR19960017208A KR970077971A KR 970077971 A KR970077971 A KR 970077971A KR 1019960017208 A KR1019960017208 A KR 1019960017208A KR 19960017208 A KR19960017208 A KR 19960017208A KR 970077971 A KR970077971 A KR 970077971A
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KR
South Korea
Prior art keywords
gain medium
optical fiber
gain
optical amplifier
erbium doped
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Application number
KR1019960017208A
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Korean (ko)
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KR0181420B1 (en
Inventor
이용우
한 닐 슨 요
황성택
김성준
Original Assignee
김광호
삼성전자 주식회사
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Priority to KR1019960017208A priority Critical patent/KR0181420B1/en
Publication of KR970077971A publication Critical patent/KR970077971A/en
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Publication of KR0181420B1 publication Critical patent/KR0181420B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
    • H01S3/06—Construction or shape of active medium
    • H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
    • H01S3/067—Fibre lasers
    • H01S3/06754—Fibre amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES 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
    • H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14—Lasers, 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
    • H01S3/16—Solid materials
    • H01S3/1601—Solid materials characterised by an active (lasing) ion
    • H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
    • H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

본 발명은 반사코팅 또는 반사형 광섬유 격자에 의해 평탄화된 동적이득을 갖는 광증폭기에 관한 것으로서, 신호광과 펌프광을 결합시키는 파장선택 결합기 ; 대략 1%의 알루미늄을 갖는 알루미노-저매노 실리게이트어븀 도핑 광섬유이고, 끝면이 반사 코팅되거나 반사형 광섬유 격자로 이루어진 이득매체 ; 및 반사된 신호광이 이득매체를 통과하여 최종 증폭된 신호를 입력되는 신호와 분리하는 광분리기를 포함함을 특징으로 한다.The present invention relates to an optical amplifier having a dynamic gain flattened by a reflective coating or a reflective optical fiber grating, comprising: a wavelength selective coupler coupling signal and pump light; A gain medium comprising an alumino-low-mannosilicate erbium doped optical fiber having approximately 1% aluminum and having an end facet coated with a reflective coating or a reflective optical fiber grating; And a light separator for separating the finally amplified signal from the input signal by passing the reflected signal light through the gain medium.

본 발명에 의하면, 특별한 조성을 갖는 이득매체를 사용하므로써 동작 조건의 변화에 대해서도 이득 곡선이 일정하게 되고, 상기 이득매체의 끝면과 끝단을 반사코팅하거나 반사형 광섬유 격자를 사용하므로써 이득 곡선이 평탄화되어 EDFA 동작대역을 넓히고, 필터를 사용하지 않으므로 EDFA의 소형화 및 안정화를 이룰 수 있다.According to the present invention, by using a gain medium having a specific composition, the gain curve is constant with respect to changes in operating conditions, and the gain curve is flattened by using a reflection-type optical fiber grating or reflection coating of the end surface and the end of the gain medium, Since the operating band is widened and the filter is not used, miniaturization and stabilization of the EDFA can be achieved.

Description

평탄화된 동적 이득을 갖는 광증폭기An optical amplifier having a planarized dynamic gain

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제 1 도는 특별한 조성을 가지면서 끝면이 반사코팅된 이득매체를 갖는 본 발명에 따른 평탄화된 동적 이득을 갖는 EDFA의 구조를 도시한 것이다. 제 2 도는 특별한 조성을 가지면서 끝면이 반사광 격자로 된 이득매체를 갖는 본 발명에 따른 평탄화된 동적 이득을 갖는 EDFA의 구조를 도시한 것이다.FIG. 1 illustrates the structure of an EDFA having a planarized dynamic gain according to the present invention having a gain medium with a specific surface and a reflective coating on the end face. FIG. 2 shows a structure of an EDFA having a planarized dynamic gain according to the present invention having a gain medium having a reflection surface with a specific surface and an end surface as a reflection light grating.

Claims (5)

신호광과 펌프광을 결합시키는 파장 선택 결합기 ; 대략 1%의 알루미늄을 갖는 알루미노-저매노 실리게이트어븀 도핑 광섬유이고, 끝면이 반사 코팅되거나 반사형 광섬유 격자로 이루어진 이득매체 ; 및 반사된 신호광이 이득매체를 통과하여 최종 증폭된 신호를 입력되는 신호와 분리하는 광분리기를 포함함을 특징으로 하는 평탄화된 동적 이득을 갖는 광증폭기.A wavelength selective coupler for combining the signal light and the pump light; A gain medium comprising an alumino-low-mannosilicate erbium doped optical fiber having approximately 1% aluminum and having an end facet coated with a reflective coating or a reflective optical fiber grating; And a light separator for separating the reflected signal light from the input signal through the gain medium and the finally amplified signal. 제 1 항에 있어서, 상기 이득매체는 1520nm에서 1554nm 파장 범위에서 파장에 따른 반사 코팅의 반사율을 다르게 하여 평탄한 이득을 가짐을 특징으로 하는 평탄화된 동적 이득을 갖는 광증폭기.The optical amplifier of claim 1, wherein the gain medium has a flat gain by varying the reflectance of the reflective coating along the wavelength in the wavelength range of 1520 nm to 1554 nm. 제 1 항 또는 제 2 항 중 어느 한 항에 있어서, 상기 이득매체는 상기 이득매체의 앞단에 알루미노 실리게이트어븀 도핑 광섬유가 추가로 삽입된 이득매체임을 특징으로 하는 평탄화된 동적 이득을 갖는 광증폭기.The optical amplifier as claimed in any one of claims 1 to 3, wherein the gain medium is a gain medium in which an aluminosilicate erbium doped optical fiber is further inserted at the front end of the gain medium. . 제 1 항 또는 제 2 항 중 어느 한 항에 있어서, 상기 이득매체는 상기 이득매체의 앞단에 포스퍼 실리게이트어븀 도핑 광섬유가 추가로 삽입된 이득매체임을 특징으로 하는 평탄화된 동적 이득을 갖는 광증폭기.The optical amplifier according to any one of claims 1 to 3, wherein the gain medium is a gain medium in which a phosphosilicate-erbium doped optical fiber is further inserted at a front end of the gain medium. . 제 1 항 또는 제 2 항 중 어느 한 항에 있어서, 상기 이득매체는 상기 이득매체의 앞단에 이터븀(Yb) 공동첨가로 포스퍼실리게이트어븀 도핑 광섬유를 추가로 삽입한 이득매체임을 특징으로 하는 평탄화된 동적 이득을 갖는 광증폭기.The gain medium according to any one of claims 1 to 3, wherein the gain medium is a gain medium in which a phosphosilicate erbium doped optical fiber is additionally inserted into the front end of the gain medium by adding Yb An optical amplifier having a planarized dynamic gain. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960017208A 1996-05-21 1996-05-21 Optical amplifier having uniform kinetic gain KR0181420B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960017208A KR0181420B1 (en) 1996-05-21 1996-05-21 Optical amplifier having uniform kinetic gain

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Application Number Priority Date Filing Date Title
KR1019960017208A KR0181420B1 (en) 1996-05-21 1996-05-21 Optical amplifier having uniform kinetic gain

Publications (2)

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KR970077971A true KR970077971A (en) 1997-12-12
KR0181420B1 KR0181420B1 (en) 1999-05-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100304361B1 (en) * 1998-10-13 2002-07-18 오길록 Planar wave guide and method for forming optical device by using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100304361B1 (en) * 1998-10-13 2002-07-18 오길록 Planar wave guide and method for forming optical device by using the same

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KR0181420B1 (en) 1999-05-15

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