Laboratory Upgrade in Telecommunication Applications of DFB Lasers and Erbium-doped Fiber Amplifiers for Technicians

该项目正在通过引入与安装和测试掺铒光纤放大器和分布式反馈激光器相关的现有仪器来升级光学实验室组件。学生通过使用功率计、单色仪和扫描干涉仪测量分布式反馈激光器的输出功率、线性度、中心波长和光谱宽度来表征其输出。他们正在组装和测试掺铒光纤放大器(EDFA)系统。使用水平正弦波发生器作为驱动源，或使用LED和DFB激光器，以及适当的探测器和宽带示波器，测量了EDFA在一定信号强度范围内的放大和线性度。他们还使用ERT驱动DFB激光光源来测量误码率，在经过EDFA放大和不经过EDFA放大的情况下通过一段光纤发送信号。最后，他们使用两个DFB激光器作为光源，制作了一个窄间隔(波长内)的波分复用器，在解复用阶段之前将其信号输入到EDFA。所有仪器都代表了从事光纤工作的技术人员所使用的仪器。

This project is upgrading the laboratory component of optics by introducing current instrumentation related to setting up and testing erbium-doped fiber optical amplifiers and distributed feedback lasers. Students are characterizing the output of a distributed feedback laser by measuring it output power, linearity, central wavelength, and spectral width using power meters, monochromators, and scanning interferometers. They are assembling and testing an erbium-doped fiber amplifier (EDFA) system. Using a leveled sine-wave generator as a driving source or an LED and a DFB laser, appropriate detector and a wide bandwidth oscilloscope, they are measuring amplification and linearity of the EDFA for a range of signal strengths. They are also measuring bit error rate using a BERT driving a DFB laser source, sending a signal through a length of fiber with and without amplification by an EDFA. Finally, they are using two DFB lasers as sources to make a narrowly-spaced (in wavelength) wavelength division multiplexer which inputs its signal to an EDFA before the demultiplexing stage. All instruments are representative of those which a technician working with fiber optics uses.