Reflectivity Measurements of Intracavity Defects in Laser Diodes

Analysis of Slot Characteristics in Slotted Single-Mode Semiconductor Lasers Using the 2-D Scattering Matrix Method

“…These continuity conditions have the field amplitudes in adjacent sections connected. Through an iterative process, the connection between the field amplitudes in the input and output regions can be finally established through the scattering matrix technique (4) where each is a by matrix. The submatrix and are the reflection matrix and transmission matrix, respectively.…”

“…For optimization of such lasers, first we need to make clear the characteristics of a single slot, most importantly the reflection and scattering loss caused by the slot. Experimental work has been carried out in which the slot reflectivity was measured [4] and the slot loss was estimated [3]. Theoretical work on the effect of slots was carried out in the 1980s by Coldren and co-workers.…”

“…The analysis is straightforward but unfortunately the scattering loss can not be determined. Furthermore, the reflection coefficient from the TMM model does not reproduce the experimental results [4]. In this letter, we use the two-dimensional (2-D) scattering matrix method (SMM) [6] to solve the slotted laser problem.…”

A Tunable Semiconductor Lased Based on Etched Slots Suitable for Monolithic Integration

“…The single slot laser is fabricated by etching into the waveguide of the FP laser diode as described in (DeChiaro 1991;McDonald & Corbett 1996;Fessant & Boucher 1998;Klehr, Beister et al 2001;Lambkin, Percival et al 2004;Engelstaedter, Roycroft et al 2008). The slots act as reflection centres and produce a modulation of the reflection and transmission spectra dependent on the characteristics of the www.intechopen.com slot such as slot position, slot depth to which it is etched and slot width.…”

Fast Switching Tunable Laser Sources for Wavelength Division Multiplexing in Passive Optical Access Networks

“…To produce (slots) in a ridge laser [1][2][3]. We have termed this a multichannel laser, we cleaved a 1.1 mm long laser the slotted Fabry-Perot (SFP) laser.…”