STTR PHASE I: Hybrid Optical Module with a Narrowband Electro-Optically Tunable Filter

* 9632300 Tavlykaev 该STTR第一阶段项目将开发一种具有增强性能的波导光栅滤波器器件，可以满足大多数复杂WDM系统的需求。然后，该滤波器将耦合到外部激光源，以形成具有可调谐波长的混合光学模块，用于许多实际应用。这项与佛罗里达大学合作开发的新技术随后将被转让给先进光子技术公司。以进一步改进到商业化前的水平。集成光学实施例中的波长选择滤波器是用于波分复用网络中的最有希望的候选者。波导光栅滤波器具有极高的波长灵敏度和结构紧凑性，是一种很有前途的滤波器。然而，迄今为止，由于缺乏高反射率的波导光栅，实际器件的性能受到严重限制。在实现高反射率光栅方面所提出的努力的独特特征是使用硅覆盖层来基本上扰动其下方的光波导的模式指数，而不增加额外的模式损耗。由于其大的折射率、可加工性和低成本，选择了硅。 波导光栅滤波器的主要商业应用是波分复用网络。另一个最重要的应用是开发紧凑和高效的波导激光器和放大器。 ***

*** 9632300 Tavlykaev This STTR Phase I project will develop a waveguide grating filter device with enhanced performance that can meet the needs of most complex WDM systems. This filter will then be coupled to an external laser source to form a hybrid optical module with tunable wavelength for a number of practical applications. This new technology, developed in conjunction with the University of Florida, will then be transferred to Advanced Photonics Technology Inc. for further refinement to a precommercial level. Wavelength-selective filters in the integrated-optic embodiment are the most promising candidates for deployment in Wavelength-Division-Multiplexed networks. A waveguide grating filter appears to be very promising on account of its extreme wavelength sensitivity and compactness. However, the performance of practical devices has thus far been severely limited by the lack of high-reflectance waveguide gratings. The unique feature of the proposed effort in achieving high-reflectance gratings is the use of a Silicon overlayer to substantially perturb the mode index of an optical waveguide underneath it without adding an additional mode loss. Silicon has been selected on account of its large refractive index, processibility, and low cost. The primary commercial application of waveguide grating filters is in Wavelength-Division-Multiplexed networks. Another most important application is the development of compact and efficient waveguide lasers and amplifiers. ***