you would want this in your needed length https://www.amazon.com/Fiber-Patch-Cable-Singlemode-Duplex/dp/B01M327AON/ref=sr_1_1_sspa?ie=UTF8&qid=1509482184&sr=8-1-spons&keywords=single+mode+apc+sc&psc=1

and this to couple the existing fiber to the jumper

https://www.amazon.com/Fiber-Optic-Adapter-Single-Simplex/dp/B00THNIEV8/ref=sr_1_3?ie=UTF8&qid=1509482184&sr=8-3&keywords=single+mode+apc+sc