Tunable Laser for Characterizing Ultra Dense Wavelength Selective Devices and Integrated Optic Systems for Fiber Telecom Applications

光纤通信系统设计和开发的目标之一是实现这种传输介质的全25thz带宽能力。目前正在研究的一种方法是在掺杂光纤放大器的增益范围内以高调制速率传输大量的光谱通道。因此，为了使新器件技术被接受，它们必须在相对较大的光谱带宽（c波段：1528-1561 nm； l波段：1561-1620 nm）上使用高光谱分辨率探针（0.10-0.20 nm; 10- 25ghz, 1550 nm）进行表征。完成这项任务的一种方法是使用可调谐激光源来探测设备，以测量其在一定波长范围内的光谱特性。入射光束的偏振也可以改变，以检查对可能发生在一段光纤长度的偏振变化的灵敏度。源输出也可以作为连续波光源，然后可以用外部调制器进行调制，以检查调制器在不同波长下的性能。在这方面，可调谐激光源是一个非常通用的工具，用于研究高性能光纤设备和系统的许多不同方面。除了用于研究目的的可调谐激光源外，它也是用于教育目的的非常有用的仪器。它可以用于实验室实验，以评估现代光纤通信系统中的器件，如光纤布拉格光栅、光放大器的光谱增益变化和放大器增益均衡技术。此外，它可以用来训练本科生和研究生在DWDM器件表征技术。本提案的目的是要求一种光谱分辨率为0.02边缘，调谐范围为1510-1580 nm的可调谐激光二极管。该源将为我们的实验室提供研究光纤通信系统中波长选择操作的设备和材料性能的能力。它还将使我们能够显著提高实验室实验的质量和相关性，我们可以在光纤和本科生和研究生的研究项目中提供这些实验。目前我们的研究和教育设施还没有这种类型的资源，这是我们努力的一个重大障碍。亚利桑那大学承诺承担激光器成本的三分之一，这凸显了获得这种类型仪器的重要性。

One of the goals of optical fiber communication system design and development is the realization of the full 25 THz bandwidth capability of this transmission medium. One approach currently being pursued is to transmit a large number of spectral channels at high modulation rates within the gain profile of doped optical fiber amplifiers. Therefore in order for new device technologies to be acceptable they must be characterized with high spectral resolution probes (0.10-0.20 nm; 10-25 GHz at 1550 nm) over relatively large spectral bandwidths (C-Band: 1528-1561 nm; L-Band: 1561-1620 nm). One approach to accomplishing this task is to use a tunable laser source to probe the device to measure its spectral properties over a range of wavelengths. The polarization of the incident beam can also be changed to examine the sensitivity to polarization variations that may occur in a length of fiber. The source output can also serve as a continuous wave optical source that can then be modulated with an external modulator to examine the performance of a modulator at different wavelengths. In this regard a tunable laser source is an extremely versatile tool for investigating many different aspects of high performance fiber optic devices and systems.In addition to using a tunable laser source for research purposes it also is a very useful instrument for education purposes. It can be used in laboratory experiments that evaluate devices found in modern fiber optic communications systems such as fiber Bragg gratings, spectral gain variation of optical amplifiers, and amplifier gain equalization techniques. In addition it can be used to train both undergraduate and graduate students in DWDM device characterization techniques.The purpose of this proposal is a request for a tunable laser diode with a spectral resolution of 0.02 rim and a tuning range from 1510-1580 nm. This source will provide our lab with the capability to investigate the performance of devices and materials for wavelength selective operations in fiber optic communications systems. it will also allow us to significantly improve the quality and relevance of laboratory experiments that we can offer in our classes on fiber optics and undergraduate and graduate research projects. A source of this type is currently not available for our research and educational facilities and is a significant obstacle to our efforts. The importance of acquiring an instrument of this type is underscored by the commitment from the University of Arizona to cost share one-third of the cost of the laser.