This article proposes an optical parametric amplifier (OPA), as an inline-repeater, using a
periodically-poled-LiNbO_3 (PPLN) waveguide with over-10-THz amplification bandwidth …

Humankind has entered a new era wherein a main characteristic is the convergence of
various technologies providing services and exerting a major impact upon all aspects of …

In this article, we report on the modeling, design, and characterization of indium phosphide
(InP) double heterojunction bipolar transistor (DHBT) devices and integrated circuits (ICs) for …

C+L+U-Band 14.85-THz WDM Transmission Over 80-km-Span G.654.E Fiber with Hybrid
PPLN-OPA/EDFA U-Band Lumped Repeater Using 144-G Page 1 C+L+U-Band 14.85-THz …

To enhance sampling rates of CMOS digital-to-analog converters (DACs), analog
multiplexing of several DAC output signals in the time domain provides a solution. In this …

We successfully demonstrate 1.0-Tb/s/λ 3840-km and 1.2-Tb/s/λ 1280-km long-haul
transmissions in 4.2-THz full C-band 175-GHz-spaced WDM configuration with improving …

To cope with the rapid growth of communications traffic, 400-Gb/s/ch digital coherent
systems are being deployed in optical core networks. However, further scaling is required …

A 2: 1 analog multiplexer (AMUX) in SiGe BiCMOS technology with a record sampling rate
for SiGe-technology of 120 GS/s, is presented. The AMUX is intended to double the signal …

We demonstrate optical arbitrary waveform generation at a record-high bandwidth of 325
GHz by phase-stabilized superimposing of four tributary signals. In a proof-of-concept …

We present a 100-GHz-bandwidth coherent transmitter front-end consisting of a cost-
effective PCB with a flip-chip-bonded InP-HBT-based driver IC and InP-MZM-based optical …