Chirp-free optical-signal generation using dual-and-direct current-voltage modulation of transistor lasers
Journal
Optics Letters
Journal Volume
45
Journal Issue
9
Pages
2474-2477
Date Issued
2020
Author(s)
Abstract
Transistor lasers (TLs) can be current-modulated as a diode laser or voltage-modulated as a Franz-Keldysh electro-absorption modulator. These two modulation schemes result in opposite frequency shifts that can cancel each other. In this work, we present the principle of generating optical signals with minimal frequency chirps using TLs. With the proper setting of pulse shapes for the current and voltage inputs, optical signals that are robust against distortions can be directly output from TLs for the medium-distance or long-distance optical fiber communication. ? 2020 Optical Society of America
Subjects
Optical fiber communication; Optical fibers; Optical signal processing; Direct current voltage; Frequency chirp; Frequency shift; Modulation schemes; Optical signal generation; Optical signals; Transistor lasers; Voltage input; Chirp modulation
SDGs
Type
journal article