Fast Wavelength Switching Lasers Using Two-Section Slotted Fabry–PÉrot Structures

Abstract

Abstract-Fast wavelength switching of a two-section slotted Fabry-Pérot laser structure is presented. The slot design enables operation at five discrete wavelength channels spaced by 10 nm by tuning one section of the device. These wavelengths operate with sidemode suppression ratio in excess of 35 dB, and switching times between these channels of approximately 1 ns are demonstrated.

A Novel Two-Section Tunable Discrete Mode Fabry-PÉrot Laser Exhibiting Nanosecond Wavelength Switching

“…In order to test the switching speed of the two-section laser, an optical heterodyne technique was employed [16] as schematically depicted in Fig. 8.…”

Optical packet transmission in 42.6 Gbit/s wavelength-division-multiplexed clockwork-routed networks

“…The lasers used were commercial devices designed for direct modulation at 2.5 Gbits/ s, and the rise and fall times of the switched laser outputs were measured to be ϳ2.2 ns, limited by the cur- rent driver. A potentially lower-cost approach that could be used in the future for the DWSL would be a single semiconductor device, such as a multicontact laser optimized to switch between two wavelengths or a slotted Fabry-Perot device customized for dual-wavelength switching [16]. Figure 7 shows oscilloscope traces of the leading part of the received data packet after injection into the recirculating loop [ Fig.…”

Characterization of a Novel Three-Section Tunable Slotted Fabry-Perot Laser

“…These lasers have a single growth fabrication process and only use standard lithography, which significantly reduces the cost and complexity of fabrication while increasing the yield. This type of laser structure, known as the slotted Fabry Perot (SFP) laser, offers wide (discrete) tunability, high SMSR and sub nanosecond switching [4]. Like the single mode devices based on a similar structure [5], this type of tunable SFP laser is shown here to also exhibit narrow linewidth.…”