FABRICATION OF MULTI-WAVELENGTHLIGHT SOURCES

多波长光源的制造

• 批准号: 11555011
• 负责人: KOYAMA Fumio
• 金额: $ 4.42万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555011/
• 关键词: OPTICAL COMMUNICATIONS; SEMICONDUCTOR LASERS; WAVELENGTH DIVISION MULTIPLEXING; MULTI-WAVELENGTH LIGHT SOURCE; 光ファイバ通信; 波長多重方式

A multi-wavelength light source is one of key devices for future large scale wavelength division multiplexing (WDM) networks. Various kinds of multi-wavelength light sources have been proposed and demonstrated. A spectrum slicing technique using broadband light sources, such as light emitting diodes, super-luminescent diodes (SLDs), super-continuum generators and mode-locked semiconductor lasers, is attractive especially for generating equally-spaced multi-wavelength light. The configuration of spectrum sliced light sources using incoherent light is simple, however, the drawback is a limited low power and a large excess intensity noise caused by a spontaneous emission beat noise.In this work, modeling and experiments on high power tapered SLDs were presented. High power tapered SLDs have been developed and broad-band emission can be realized with non-uniform quantum well structures. Also, a novel technique of reducing the excess intensity noise has been developed.A tapered SLDs with the non-uniform QW structure was demonstrated for large scale spectrum sliced multi-wavelength light sources. High power of over 1.5 W and broad-band emission of over 50 nm were demonstrated either at 1.5μm and 1.2μm band. Also, we propose a novel method to avoid the beat noise of spectrum-sliced incoherent light by using saturated SOAs. We found that the saturation characteristic in semiconductor optical amplifiers is helpful for reducing the excess intensity noise of spectrum-sliced light. We investigated the noise suppression using a gain-saturated SOA, showing that the intensity noise of the input signal can be significantly reduced over a bandwidth of few GHz. We demonstrated a SOA intensity modulator with a function of both noise reduction and signal modulation. The proposed device will be useful for spectrum-sliced multi-wavelength light sources used in WDM local area networks.

多波长光源是未来大规模波分复用网络的关键器件之一。已经提出并证明了各种类型的多波长光源。使用宽带光源（诸如发光二极管、超发光二极管（SLD）、超连续谱发生器和锁模半导体激光器）的光谱分割技术尤其对于产生等间隔的多波长光是有吸引力的。利用非相干光进行光谱分割的光源结构简单，但其缺点是低功率有限，并且由于自发辐射拍频噪声的存在，会产生较大的强度噪声。高功率锥形SLD已经发展起来，并且利用非均匀量子阱结构可以实现宽带发光。同时，提出了一种新的降低多余强度噪声的方法，并将其应用于大规模光谱分割的多波长光源中，实现了一种具有非均匀量子阱结构的锥形SLD。在1.5μm和1.2μm波段获得了大于1.5W的高功率和大于50nm的宽带发射。此外，我们提出了一种新的方法，以避免拍噪声的光谱切片的非相干光通过使用饱和SOA。我们发现半导体光放大器的饱和特性有助于降低光谱分割光的多余强度噪声。我们研究了使用增益饱和的SOA的噪声抑制，表明输入信号的强度噪声可以显着降低在几GHz的带宽。我们设计了一个同时具有降噪和信号调制功能的SOA强度调制器。所提出的装置将是有用的，用于WDM局域网中的光谱切片多波长光源。

项目成果

D.Schlenker, T.Miyamoto, Z.Chen, M.Kawaguchi, T.Kondo, E.Gouardes, F.Koyama, and K.Iga: J.Crystal Growth. vol.221. 503-508 (2000)

D.Schlenker、T.Miyamoto、Z.Chen、M.Kawaguchi、T.Kondo、E.Gouardes、F.Koyama 和 K.Iga：J. 晶体生长。

N. Nishiyama,M.Arai,S.Shinada,T.Miyamoto,F.Koyama,and K.Iga: "1.15μm lasing operation of highly strained GaInAs/GaAs on GaAs (311) B substrate with high characteristic temperature (T0=210K)"Jpn.J.Appl.Phys.,. 39・10B. L1046-L1047 (2000)

N. Nishiyama、M.Arai、S.Shinada、T.Miyamoto、F.Koyama 和 K.Iga：“在具有高特征温度的 GaAs (311) B 衬底上进行高应变 GaInAs/GaAs 的 1.15μm 激光操作 (T0= 210K)“Jpn.J.Appl.Phys.,.39・10B.L1046-L1047 (2000)

T.Yamatoya,S.Mori,F.Koyama: "High Power GalnAsP/InP Strained Quantum Well Superluminescent Diode with Tapered Active Region"Jpn.J.Appl.Phys.. Vol38・no9A. 5121-5122 (1999)

T.Yamatoya、S.Mori、F.Koyama：“具有锥形活性区域的高功率 GalnAsP/InP 应变量子阱超发光二极管”Jpn.J.Appl.Phys.. Vol38・no9A (1999)

F.Koyama,D.Schlenker,T.Miyamoto: "1.2μm highly strained GalnAs/GaAs quantum well lasers for singlemode fibre datalink"Electron.Lett.. Vol35・no13. 1079-1080 (1999)

F.Koyama、D.Schlenker、T.Miyamoto：“用于单模光纤数据链路的 1.2μm 高应变 GalnAs/GaAs 量子阱激光器”Electron.Lett.. Vol35・no13 (1999)

F.Koyama,T.Yamatoya and K.Iga: "Highly Gain-Saturated GalnAsP/InP SOA Modulator For Incoherent Spectrum-Sliced Light Source"Technical Digest of IPRM 2000. (発表予定). (2000)

F.Koyama、T.Yamatoya 和 K.Iga：“用于非相干光谱切片光源的高增益饱和 GalnAsP/InP SOA 调制器”IPRM 2000 技术文摘。（待公布）。