The National Institute of Standards and Technology (NIST) is conducting market research to identify qualified small business sources capable of providing a specific Keysight Technologies High Sensitivity Optical Power Meter (model N7747C-STD) on a brand name basis. This is a Sources Sought Notice for planning purposes only, not a solicitation, and NIST intends to negotiate a firm-fixed price purchase order if no alternate sources are found. The equipment will support NIST’s quantum network research and the DARPA Quanet phase 2 integration event, requiring a 2-channel meter with an 800 nm to 1700 nm wavelength range and -110 dBm to +10 dBm power range. Responses are due by 11:00 AM ET on April 30, 2026, and questions must be submitted by 11:00 AM ET on April 22, 2026. No budget amount or performance location is specified in the notice.