Optical antennas are required to support the broadband operation for a variety of applications. Optical broadband antennas are also exceedingly desirable for fluorescence enhancement, surface-enhanced Raman scattering, and higher harmonic generation, which are intrinsically multi-wavelength and broadband in nature [33]. However, broadband antennas operating in optical frequencies experience limitations such as low radiation efficiency or narrow frequency band operation, etc. [34]. This problem needs to be addressed with an efficient design of a broadband antenna that can provide radiation coverage to the three main frequency windows for optical transmission (193.1, 229, and 352.9 THz) to be compatible with commercial nano-photonic applications. In order to be able to receive and transmit optical and infrared signals, a fundamental requirement is to feed the antenna with plasmonic nano-guiding. The wedge plasmon waveguides are superior as compared to groove waveguide structures, due to their strong subwavelength localization of guided plasmonic signals, large propagation distances, and relatively low dissipation [35]. Different types of metallic nanostructures have been proposed for guiding SPP modes, including thin metal films (gold, silver) [36], chains of metal nanoparticles [37], sharp metal wedges [38], etc. The mathematical model of bio-inspired shapes can be obtained using the Gielis formula [39] by transforming multiple superellipses to a leaf or flower shape. The key factor is the use of polar coordinates, along with the use of rotational symmetry to obtain a set of six parameters, which can provide a variety of bio-inspired geometries. In this manuscript, we propose a broadband optical nano-antenna to achieve high performance in terms of broadband transmission characteristics, fed with a hybrid plasmonic waveguide, and structured according to the nature and landscape-inspired shape of a maple leaf. The major contribution of this work is the characteristic design to achieve a high gain at the THz range and the feasibility to increase it in an array configuration. The bio-inspired shape consists of multiple sharp edges on the radiating patch, which helps the antenna structure resonate on multiple frequencies, thus providing a multi-band operation or obtaining a large bandwidth by covering a range of optical frequencies. The designed antenna in this work has been impedance matched with the characteristic impedance of the waveguide feed and can cover all of the optical communication wavelengths (850, 1310, and 1550 nm). The proposed antenna can be used in inter- and intra-chip optical communications and sensing applications. Furthermore, an analysis on the impact of using an array of these designs with \(2\times 1\) and \(64\times 1\) configurations are also presented to achieve a highly directive pattern of 15 dBi gain, in order to enable the designed antenna for the application of energy harvesting. The rest of the paper is planned in the following order. Section 2 describes the theory of hybrid plasmonic waveguides. Section 3 is concerned with designing the procedure and the geometry of the maple shape nano-antenna. Section 4 presents the simulation results and Section 5 concludes the work.