In 1987 Winful took up the post of associate professor in the Electrical Engineering and Computer Sciences department at the University of Michigan, and was promoted to become a full professor in 1992, then a year later promoted to an endowed professorship as Thurnau Professor. As noted by Anis Haffar: "His many contributions to photonics and quantum electronics include pioneering work on nonlinear optical periodic structures; the nonlinear dynamics of coherently coupled laser arrays; the physics of quantum tunneling time; polarization instabilities and distributed-feedback fiber Raman lasers." A close colleague at the University of Michigan was Gérard Mourou, who in 2018 was co-winner of the Nobel Prize in Physics for the invention of a technique known as Chirped Pulse Amplification. Having published more than 130 journal articles and supervised the research of PhD students, Winful is himself the recipient of many awards, most recently the 2020 IEEE Photonics Society Quantum Electronics Award, which he was given "for pioneering the field of nonlinear optical periodic structures and for foundational contributions to nonlinear dynamics of semiconductor laser arrays". Among his other distinctions are the EECS Outstanding Achievement Award, the College of Engineering Teaching Excellence and Service Excellence Awards, the Provost's Teaching Innovation Prize, the Amoco/University of Michigan Teaching Excellence Award, the State of Michigan Teaching Excellence Award, and the Raymond J. and Monica E. Schultz Outreach and Diversity Award, as well as twice voted Professor of the Year in Electrical Engineering and Computer Science, and named the Tau Beta Pi Outstanding Professor in the College of Engineering.
Winful's mother was the headmistress of St. Michael's School in Cape Coast, and his father was a civil engineer who worked on the Akosombo Dam during its construction and later become executive secretary of the Volta River Authority. Winful is also a musician, during in his Cape Coast school days playing rhythm guitar in a pop band, as well as organ in church. He continues to play the piano recreationally — including the music of Bach, Chopin and Brahms, as well as his own compositions — and has said: "It is my greatest joy, next to my work." Winful performed one of his own original compositions at a party attended by some two hundred people in celebration of Gérard Mourou's 2018 Nobel win, and also honoured Mourou with the gift of a piece of Kente cloth.
"Passive Mode Locking with an Active Nonlinear Directional Coupler: Positive Group-Velocity Dispersion", Optics Letters, 18, 720–722.
"Gouy Shift and Temporal Reshaping of Focused Single-cycle Electromagnetic Pulses", Optics Letters., 23, 385.
"Spatiotemporal Focusing of Single-cycle Light Pulses", submitted to Optics Letters.
"Spatiotemporal Evolution of Single-cycle Electromagnetic Pulses", submitted to Physical Review E.
"Fields of Single-cycle Terahertz Pulses Generated by a Loop Antenna", in CLEO '98 Proceedings.
"Physical mechanism for apparent superluminality in barrier tunneling", in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference, Technical Digest, paper QFA5. DOI: 10.1109/QELS.2003.238281.
"Apparent superluminality and the generalized Hartman effect in double-barrier tunneling", in Physical Review E 72, October 2005. DOI: 10.1103/PhysRevE.72.046608.
"Tunneling time, the Hartman effect, and superluminality: A proposed resolution of an old paradox", Physics Reports 436, pp. 1–69. DOI: 10.1016/j.physrep.2006.09.002.
"Compressing light and sound through chirpedpulse stimulated brillouin scattering", Optics Infobase Conference Papers.
"Chirped Brillouin dynamic gratings for storing and compressing light". Optics Express 21: 10039-47. DOI: 10.1364/OE.21.010039.