This paper presents a graphene-based ultrafast laser, which utilizes the optoelectronic properties of graphene to achieve passive mode-locking of an erbium-doped fiber laser. A graphene-polymer composite is fabricated using wet-chemistry techniques, and Pauli blocking following intense illumination results in saturable absorption, independent of wavelength. This is used to passively mode-lock an Erbium-doped fiber laser at 1559 nm with a 5.24 nm spectral bandwidth and ~460 fs pulse duration. The graphene-based saturable absorber offers advantages over traditional materials like SESAMs and SWNTs, as it does not require bandgap engineering or chirality/diameter control. The composite is fabricated by dispersing graphene in a polymer matrix, which allows for easy integration into photonic systems. The graphene-polymer composite is characterized using UV-Vis-NIR absorption spectroscopy, Raman spectroscopy, and transmission measurements. The results show that the composite has a high absorption coefficient and a broad spectral range, making it suitable for wideband, tunable operation. The graphene-based ultrafast laser is tested and demonstrated to produce a pulse train at a rate of 19.9 MHz with a pulse duration of ~460 fs. The laser is stable and has a high peak-to-background ratio, indicating good mode-locking stability. The study highlights the potential of graphene for optoelectronics and integrated photonics, extending its practical applications beyond nanoelectronics. The results demonstrate the effectiveness of graphene as a saturable absorber for ultrafast lasers, with the potential for further optimization to enhance performance and reduce power consumption.This paper presents a graphene-based ultrafast laser, which utilizes the optoelectronic properties of graphene to achieve passive mode-locking of an erbium-doped fiber laser. A graphene-polymer composite is fabricated using wet-chemistry techniques, and Pauli blocking following intense illumination results in saturable absorption, independent of wavelength. This is used to passively mode-lock an Erbium-doped fiber laser at 1559 nm with a 5.24 nm spectral bandwidth and ~460 fs pulse duration. The graphene-based saturable absorber offers advantages over traditional materials like SESAMs and SWNTs, as it does not require bandgap engineering or chirality/diameter control. The composite is fabricated by dispersing graphene in a polymer matrix, which allows for easy integration into photonic systems. The graphene-polymer composite is characterized using UV-Vis-NIR absorption spectroscopy, Raman spectroscopy, and transmission measurements. The results show that the composite has a high absorption coefficient and a broad spectral range, making it suitable for wideband, tunable operation. The graphene-based ultrafast laser is tested and demonstrated to produce a pulse train at a rate of 19.9 MHz with a pulse duration of ~460 fs. The laser is stable and has a high peak-to-background ratio, indicating good mode-locking stability. The study highlights the potential of graphene for optoelectronics and integrated photonics, extending its practical applications beyond nanoelectronics. The results demonstrate the effectiveness of graphene as a saturable absorber for ultrafast lasers, with the potential for further optimization to enhance performance and reduce power consumption.