The National Institute of Standards and Technology (NIST) is conducting market research to identify vendors capable of supplying a Fiber fusion splicer and cleaver for multi-core and hollow-core fibers. This sources sought notice is not a request for proposals, and no solicitation is currently available. Responses must be submitted by the date and time specified in the notice, and no quotes will be accepted at this time. The location for performance of services is not specified, and no budget amount is provided. The results will help determine if a small business set-aside is possible, with the NAICS code 335921 and a size standard of 1,000 employees.