Photonic Crystal Filter for ASW Operations Navy SBIR FY2005.2 Sol No.: Navy SBIR FY2005.2 Topic No.: N05-119 Topic Title: Photonic Crystal Filter for ASW Operations Proposal No.: N052-119-0021 Firm: MetroLaser, Inc. 2572 White Road Irvine, California 92614-6236 Contact: Vladimir Markov Phone: (949) 553-0688 Web Site: http://www.metrolaserinc.com Abstract: MetroLaser proposes to design and build an innovative ultra-narrow high throughput optical bandpass filter based on the properties of a dielectric photonic crystal structure with a resonant cavity. Such a structure can exhibit an ultra-narrow high-transmission band in the middle of a wide low-transmission stop-band. During Phase I, we will demonstrate experimentally the proof-of-concept for a filter with sub-nm bandpass, high throughput and rejection level in both visible and infrared (IR) regions. We will also develop a complete model of the functional characteristics, based on specific features of photonic crystal structures with a resonant cavity, and develop a strategy for building a prototype of the instrument. The proposed filter is expected to have a bandpass range of 0.1 nm, an acceptance angle of 2,a and an aperture of about 10 inches. During Phase II, a rugged version of the filter will be demonstrated. A compact, low-weight, single-assembly design of the filter will allow it to be retrofitted to existing instruments and provide a stable performance in harsh operating environments. Benefits: The proposed ultra-narrow optical bandpass filter will find commercial applications in space-based and airborne multi-spectral imaging and remote sensing systems, including LIDAR stations and meteorological instruments. It will expand capabilities for high accuracy spectral measurements within narrow spectral regions necessary for resolving individual spectral features. Due to its high spectral resolution, compactness, ruggedness and stability, the proposed filter will allow for innovative solutions in high-resolution spectroscopic instrumentation, especially when portable devices are of interest. Such a filter should provide increased performance in many E/O systems. Applications include atmospheric and ocean environmental monitoring for these systems. The improvements in devices and technologies could also be used for improved medical imaging and diagnostic systems. Return