Light modulation is an essential operation in photonics and optoelectronics. With existing
and emerging technologies increasingly demanding compact, efficient, fast and broadband …

In this paper, we review the optoelectronic properties and applications of graphene and
graphene heterostructures in recent years. Graphene is a 2D crystal with a single atomic …

Graphene has generated exceptional interest as an optoelectronic material 1, 2 because its
high carrier mobility 3, 4 and broadband absorption 5 promise to make extremely fast and …

Critical coupling in integrated photonic devices enables the efficient transfer of energy from
a waveguide to a resonator, a key operation for many applications. This condition is …

Graphene-based optical modulators have recently attracted much attention because of their
characteristic ultrafast and broadband response. Their modulation depth (MD) and overall …

All-optical signal processing avoids the conversion between optical signals and electronic
signals and thus has the potential to achieve a power efficient photonic system. Micro-scale …

A tunable Y-branch graphene plasmonic switch operating at the wavelength of 1.55 μ m is
proposed in which graphene is placed on white graphene. The switch structure is …

Optical modulators (OMs) are a key device in modern optical systems. Due to its unique
optical properties, graphene has been recently utilized in the fabrication of optical …

In the advancement of photonics technologies, all-optical systems are highly demanded in
ultrafast photonics, signal processing, optical sensing and optical communication systems …

In this paper, the basic physics of modulator are discussed and traditional silicon modulator
in the early years is involved as a comparison. Fifty-seven research articles about graphene …