K. P. Nagarjun
YOU?
Author Swipe
View article: Low-power actuators for programmable photonic processors
Low-power actuators for programmable photonic processors Open
The demand for efficient actuators in photonics has peaked with increasing popularity for large-scale general-purpose programmable photonics circuits. We present our work to enhance an established silicon photonics platform with low-power …
View article: Scaling programmable silicon photonics circuits
Scaling programmable silicon photonics circuits Open
We give an overview the progress of our work in silicon photonic programmable circuits, covering the technology stack from the photonic chip over the driver electronics, packaging technologies all the way to the software layers. On the pho…
View article: Programmable Silicon Photonic Circuits
Programmable Silicon Photonic Circuits Open
Programmable photonics configure the flow of light on a photonic chip using software and electrical actuators. Such flexible chips are useful for prototyping new applications. We discuss the underlying technologies for hardware and softwar…
View article: Programmable photonic circuits
Programmable photonic circuits Open
Programmable photonic circuits, in contrast to classical photonic integrated circuits (PIC), can be configured at run-time to route light along different paths and perform different optical functions. This is accomplished by a mesh of inte…
View article: General-Purpose Programmable Photonic Chips
General-Purpose Programmable Photonic Chips Open
Photonic chips are becoming more programmable, with connectivity that is reconfigured using electronics and software. This evolution is propelled by artificial intelligence and quantum computing applications. We will discuss more general-p…
View article: Tailored optical feedback for bandwidth scaling and spectral equalization of high repetition rate electro-optic frequency combs
Tailored optical feedback for bandwidth scaling and spectral equalization of high repetition rate electro-optic frequency combs Open
Direct bandwidth scaling of high-repetition-rate electro-optic (EO) frequency combs is limited by the power handling capability of modulators used. Significant bandwidth can be achieved by using nonlinear spectral broadening of a single la…
View article: Generation of a multi-wavelength source spanning the entire C-band by nonlinear spectral broadening of dual-carrier electro-optic frequency combs
Generation of a multi-wavelength source spanning the entire C-band by nonlinear spectral broadening of dual-carrier electro-optic frequency combs Open
We demonstrate a multi-wavelength source with a high repetition rate of 25 GHz, spanning the entire C-band, of which 124 lines lie within 10 dB bandwidth. We exploit the spectral and temporal properties of dual carrier electro-optic combs …
View article: Microwave power induced resonance shifting of silicon ring modulators for continuously tunable, bandwidth scaled frequency combs
Microwave power induced resonance shifting of silicon ring modulators for continuously tunable, bandwidth scaled frequency combs Open
We demonstrate a technique to continuously tune center frequency and repetition rate of optical frequency combs generated in silicon microring modulators and bandwidth scale them. We utilize a drive frequency dependent, microwave power ind…
View article: Bandwidth scaling of silicon modulator-based combs using multi-carriers and frequency offset locking
Bandwidth scaling of silicon modulator-based combs using multi-carriers and frequency offset locking Open
Optical frequency combs can be generated on-chip in silicon modulators through large signal modulation of an optical carrier. In this paper, a technique for bandwidth scale frequency combs generated from linear silicon modulators is propos…
View article: Optical frequency comb based on nonlinear spectral broadening of a phase modulated comb source driven by dual offset locked carriers
Optical frequency comb based on nonlinear spectral broadening of a phase modulated comb source driven by dual offset locked carriers Open
We demonstrate a versatile technique to generate a broadband optical frequency comb source in the C-band. This is accomplished by nonlinear spectral broadening of a phase modulated comb source driven by dual frequency offset locked carrier…
View article: Generation of tunable, high repetition rate optical frequency combs using on-chip silicon modulators
Generation of tunable, high repetition rate optical frequency combs using on-chip silicon modulators Open
We experimentally demonstrate tunable, highly-stable frequency combs with high repetition-rates using a single, charge injection based silicon PN modulator. In this work, we demonstrate combs in the C-band with over eight lines in a 20-dB …