Effect of Higher-Order Modal Dispersion in Direct-Detection Mode-Division-Mul…

Short-reach direct-detection links using mode-division multiplexing (MDM) in multimode fiber (MMF) can employ receiver-side optical signal processing (OSP), for example, by Mach-Zehnder meshes, to …

Phase Noise Analysis of Resonator-Enhanced Electro-Optic Comb-Based Analog Co…

We present an architecture for wavelength-division-multiplexed coherent data center links employing resonator-enhanced electro-optic frequency comb generators as both transmitter and local oscillat…

Phase Retrieval-Based Coherent Receivers : Signal Design and Degrees of Freedom

Kramers-Kronig (KK) detection exploits properties of minimum-phase, single-sideband signals to recover the phase of a signal from its intensity. It offers many of the benefits of standard coherent …

Modeling and Experimental Measurement of Power Efficiency for Power-Limited S…

Power efficiency of long-haul optical fiber transmission has emerged as a critical challenge to cost-effectively increasing submarine cable capacity. Building on previous experimental work and info…

External vs. Integrated Light Sources for Intra-Data Center Co-Packaged Optic…

Co-packaging of optics and electronics for data center switches has been proposed to reduce system-level power consumption by minimizing power-hungry electrical interconnects. Co-packaging optical …

Coherent Data Center Links

As link bit rates within and between data centers continue to increase, it is challenging to maintain low power consumption while accommodating ever-tighter optical link budgets. Although power con…

Designing High-Performance Multimode Fibers Using Refractive Index Optimization

The rich design landscape of optical fibers offers many opportunities for refractive index optimization. In particular, the refractive index profiles of multimode fibers (MMFs) and multicore fibers…

Adaptive Coding and Modulation for Robust Optical Access Networks

We introduce adaptive coding and modulation (ACM) to direct-detection passive optical networks (PONs) operating beyond 10 Gb/s per wavelength to allow each user to transmit at the highest possible …

Design of Efficient Resonator-Enhanced Electro-Optic Frequency Comb Generators

Resonator-enhanced electro-optic (RE-EO) frequency comb generators produce broad combs by coupling an optical field to a resonator containing a phase modulator driven at a harmonic of the resonator…

Adapting Mach-Zehnder Mesh Equalizers in Direct-Detection Mode-Division-Multi…