一种功率可调的稳定激光光源的实现方法 |
投稿时间:2017-04-01 修订日期:2017-04-16 点此下载全文 |
引用本文:刘先龙.一种功率可调的稳定激光光源的实现方法[J].红外,2017,38(8):27~30 |
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中文摘要:在光纤通信系统测试中,波长为850 nm、
1310 nm、1490 nm、1550 nm和1625 nm
等的红外激光光源作为信号源具有广泛的应用。该光源需要
具有稳定的输出光功率。通常采用含有衰减片的光
衰减器对其输出光功率进行调节以满足不同场合的测
试与校准需求。通过分析激光器输出功率与
驱动电流的特征曲线,提出了一种在电路上采用压控电
流的方法,实现了稳定光源的输出光功率步进可调(调
节范围为30 dB)。该方法可有效减少光衰减器的使用,缩减测
试系统的仪器数量,提高测试效率,降低测试成本。 |
中文关键词:稳定光源 可调光功率 压控电流 |
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A Method for Realizing Adjustable and Stable Laser Light Source |
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Abstract:As signal sources, the infrared laser
light sources with wavelengths of 850 nm, 1310 nm, 1490 nm,
1550 nm and 1625 nm have wide applications in the test of
optical fiber communication systems. These laser light sources
need stable output light power. Usually, to meet the test and
correction requirements in different cases, an optical attenuator
with optical attenuation slices is used to adjust the output
light power of the light source. By analyzing the characteristic
curves of laser output power and driving current, a method for
using voltage-controlled current on a circuit is proposed. Thus,
a stable laser light source with adjustable output light power (the
adjusting range is up to 30 dB) is realized. By this method, the
use of optical attenuators can be reduced effectively, the number
of the instruments to be used can be reduced, the test efficiency
can be improved and the test cost can be reduced. |
keywords:stable light source adjustable optical power voltage-controlled current |
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