Vescent Photonics proposes to bring an environmentally robust, compact, high fidelity frequency comb to the commercial market. This will be comb based on a NIST design, augmented with a high bandwidth graphene modulator. Vescent will partner with MRADS, a CU spin-off commercializing high bandwidth graphene modulators for mode-locked lasers. These modulators will both improve performance of the NIST comb and also give Vescent the freedom to operate in the commercial market. These devices will be incorporated into the packages developed during this Phase I and will be a central component of the final deliverable: a pair of high fidelity frequency combs.