The impact of photonics on communication and sensing is still evolving. Compact photonic devices can be the key to realize optical interconnects and label-free cell-level detection of chronic diseases. The recent advances in the area of the nanofabrication have given the ability to control the structure and properties of the devices to the desired levels.In Optoelectronic Nanodevice Research Laboratory of Discipline of Electrical Engineering at India Institute of Technology (IIT) Indore we have been working on number of on-chip devices and functionalities including guiding-coupling platform for optical fiber communication, optical interconnects and for bio-chemical sensing. One of the primary targets of these devices is their design flexibility for multidisciplinary applications. Our research group focuses on realizing new/improved optoelectronic functions by utilizing engineered (1D and 2D photonic crystals) and/or hybrid/2D materials (graphene etc.) into our devices to pave the way for the realization large-scale photonic circuits for telecommunication, computing and bio-medical applications.
Following are thrust areas of our research:
Our group has recently demonstrated a low-loss optical confinement in photonic waveguide at real nano-scales which we are planning to use in realizing nano devices for optical interconnects . Photonic crystals offer various advantages when it comes to bio-chemical sensing. To take the advantage of waveguide-based sensors as well as cavity-based sensors a coupled design of waveguide-cavity has been proposed to provide efficient bio-sensing of cancer cells. Engineered silicon can further add the flexibility in terms of device functionality; in that line we proposed two-way Bragg reflector for multiple applications. Further to add electrical control to our devices we utilized electrical tuning of graphene in which a graphene based photonic crystal waveguide has been proposed to realize delay tuning an important requirement for devices used in optical interconnects.