近红外S-C-L超宽波带低噪声PbS量子点掺杂光纤放大器

程成; 吴昌斌

doi:doi:10.3788/AOS201838.1006006

光学学报, 2018, 38 (10): 1006006, 网络出版: 2019-05-09

近红外S-C-L超宽波带低噪声PbS量子点掺杂光纤放大器下载： 900次

PbS Quantum-Dot-Doped Fiber Amplifier in NIR S-C-L Ultra-Broad Waveband with Low Noise

程成 ^**吴昌斌 ^*

作者单位

浙江工业大学光电子智能化技术研究所,浙江杭州 310023

图 & 表

图 1. Pbs量子点的(a) TEM图和(b)粒度分布

Fig. 1. (a) TEM images and (b) size distribution of PbS QDs

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图 2. PbS量子点的能级示意图

Fig. 2. Energy level diagram of PbS QDs

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图 3. QDFA的实验装置图

Fig. 3. Experimental setup of QDFA

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图 4. (a) UV胶本底的吸收谱和透射率; (b)实测PbS量子点的PL辐射谱和吸收谱

Fig. 4. (a) Measured absorption spectrum and transmissivity of UV-gel background; (b) measured PL-emission and absorption spectra of PbS QDs

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图 5. (a) QDF中抽运功率随光纤长度的变化; (b) QDF的损耗谱

Fig. 5. (a) Measured pumping power in QDF as a function of fiber length; (b) attenuation of QDF varying with wavelength

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图 6. 不同掺杂浓度下QDF的PL峰值光强随光纤长度的变化

Fig. 6. PL peak intensity of QDF as a function of fiber length under different doping concentrations

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图 7. Lopt与掺杂浓度之间的关系

Fig. 7. Relationship between Lopt and doping concentration

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图 8. 不同抽运功率下QDFA的输出信号光强分布(插图为零抽运时信号光的输出光谱)

Fig. 8. Output signal spectra of QDFA under different pumping powers, where the illustration is output spectrum for zero pump

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图 9. 不同抽运光功率下QDFA的增益特性随波长的变化

Fig. 9. Signal gain of QDFA as a function of wavelength under different pumping powers

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图 10. 不同波长下信号光增益随抽运功率的变化(插图为局部放大图)

Fig. 10. Signal gain as a function of pumping power under different wavelengths, the insert shows the partial enlargement

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图 11. 不同波长下信号光增益随光纤长度的变化

Fig. 11. Signal gain as a function of fiber lengthunder different wavelengths

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图 12. QDFA的增益系数和噪声系数

Fig. 12. Signal gain and NF of QDFA

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表 1所提QDFA与EDFAs以及瞬逝波抽运的QDFA主要性能指标对比

Table1. Comparison of performance among the proposed QDFA, EDFAs, and QDFA excited by evanescent wave

Amplifier	Working waveband	Bandwidth /nm	Gain flatness /dB	Gain /dB (at 1550 nm)	NF /dB	P_th /mW	P_p /mW (gain saturation)
EDFAs(conventional single fiber)^[4]	C(1535-1560 nm)	About 25	<3	About 30 (P_i=-30 dBm)^①	3.8-4.2	About 1	About 100
EDFAs(optimizedmultiple fiber)^[19]	C(1530-1560 nm)L(1570-1600 nm)	3030	<4.1<1.2	3132(P_i=-30 dBm)^①	3.4-3.55.0-5.3	About 1
QDFA(excited by evanescent wave)^[10]	1440-1640 nm	About 80	<3	<about 17(P_i=-63 dBm)^②		About 35	About 195
QDFA(this paper)	S-C-L(1470-1620 nm)	75(1518-1593 nm)	<3	12.26-15.26(P_i=-23 dBm)^③	2.88-3.47	About 0.64	About 23.7

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程成, 吴昌斌. 近红外S-C-L超宽波带低噪声PbS量子点掺杂光纤放大器[J]. 光学学报, 2018, 38(10): 1006006. Cheng Cheng, Changbin Wu. PbS Quantum-Dot-Doped Fiber Amplifier in NIR S-C-L Ultra-Broad Waveband with Low Noise[J]. Acta Optica Sinica, 2018, 38(10): 1006006.

近红外S-C-L超宽波带低噪声PbS量子点掺杂光纤放大器下载： 900次

图 1. Pbs量子点的(a) TEM图和(b)粒度分布

Fig. 1. (a) TEM images and (b) size distribution of PbS QDs

图 2. PbS量子点的能级示意图

Fig. 2. Energy level diagram of PbS QDs

图 3. QDFA的实验装置图

Fig. 3. Experimental setup of QDFA

图 4. (a) UV胶本底的吸收谱和透射率; (b)实测PbS量子点的PL辐射谱和吸收谱

Fig. 4. (a) Measured absorption spectrum and transmissivity of UV-gel background; (b) measured PL-emission and absorption spectra of PbS QDs

图 5. (a) QDF中抽运功率随光纤长度的变化; (b) QDF的损耗谱

Fig. 5. (a) Measured pumping power in QDF as a function of fiber length; (b) attenuation of QDF varying with wavelength

图 6. 不同掺杂浓度下QDF的PL峰值光强随光纤长度的变化

Fig. 6. PL peak intensity of QDF as a function of fiber length under different doping concentrations

图 7. Lopt与掺杂浓度之间的关系

Fig. 7. Relationship between Lopt and doping concentration

图 8. 不同抽运功率下QDFA的输出信号光强分布(插图为零抽运时信号光的输出光谱)

Fig. 8. Output signal spectra of QDFA under different pumping powers, where the illustration is output spectrum for zero pump

图 9. 不同抽运光功率下QDFA的增益特性随波长的变化

Fig. 9. Signal gain of QDFA as a function of wavelength under different pumping powers

图 10. 不同波长下信号光增益随抽运功率的变化(插图为局部放大图)

Fig. 10. Signal gain as a function of pumping power under different wavelengths, the insert shows the partial enlargement

图 11. 不同波长下信号光增益随光纤长度的变化

Fig. 11. Signal gain as a function of fiber lengthunder different wavelengths

图 12. QDFA的增益系数和噪声系数

Fig. 12. Signal gain and NF of QDFA

表 1所提QDFA与EDFAs以及瞬逝波抽运的QDFA主要性能指标对比

Table1. Comparison of performance among the proposed QDFA, EDFAs, and QDFA excited by evanescent wave

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图 1. Pbs量子点的(a) TEM图和(b)粒度分布

Fig. 1. (a) TEM images and (b) size distribution of PbS QDs

图 2. PbS量子点的能级示意图

Fig. 2. Energy level diagram of PbS QDs

图 3. QDFA的实验装置图

Fig. 3. Experimental setup of QDFA

图 4. (a) UV胶本底的吸收谱和透射率; (b)实测PbS量子点的PL辐射谱和吸收谱

Fig. 4. (a) Measured absorption spectrum and transmissivity of UV-gel background; (b) measured PL-emission and absorption spectra of PbS QDs

图 5. (a) QDF中抽运功率随光纤长度的变化; (b) QDF的损耗谱

Fig. 5. (a) Measured pumping power in QDF as a function of fiber length; (b) attenuation of QDF varying with wavelength

图 6. 不同掺杂浓度下QDF的PL峰值光强随光纤长度的变化

Fig. 6. PL peak intensity of QDF as a function of fiber length under different doping concentrations

图 7. Lopt与掺杂浓度之间的关系

Fig. 7. Relationship between Lopt and doping concentration

图 8. 不同抽运功率下QDFA的输出信号光强分布(插图为零抽运时信号光的输出光谱)

Fig. 8. Output signal spectra of QDFA under different pumping powers, where the illustration is output spectrum for zero pump

图 9. 不同抽运光功率下QDFA的增益特性随波长的变化

Fig. 9. Signal gain of QDFA as a function of wavelength under different pumping powers

图 10. 不同波长下信号光增益随抽运功率的变化(插图为局部放大图)

Fig. 10. Signal gain as a function of pumping power under different wavelengths, the insert shows the partial enlargement

图 11. 不同波长下信号光增益随光纤长度的变化

Fig. 11. Signal gain as a function of fiber lengthunder different wavelengths

图 12. QDFA的增益系数和噪声系数

Fig. 12. Signal gain and NF of QDFA

表 1所提QDFA与EDFAs以及瞬逝波抽运的QDFA主要性能指标对比

Table1. Comparison of performance among the proposed QDFA, EDFAs, and QDFA excited by evanescent wave

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近红外S-C-L超宽波带低噪声PbS量子点掺杂光纤放大器下载： 900次