The National Institute of Standards and Technology (NIST) is seeking to procure a set of tunable, low-loss, narrow-band optical filters for quantum networking research in the O-band wavelength range. The contractor must deliver all requirements within twelve weeks after receipt of order, with delivery FOB Destination. This is an unrestricted competition under NAICS code 334413, open to both small and other-than-small businesses. The award will be based on best value, with technical capability being more important than price. No specific budget amount is mentioned, and the location for performance is not specified.