Title :
Measurement of chirp parameter in GaInAs/GaInAsP quantum well electroabsorption modulators by using intracavity modulation
Author :
Koyama, F. ; Liou, K.-Y. ; Dentai, A.G. ; Raybon, G. ; Burrus, C.A.
Author_Institution :
Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA
Abstract :
A useful technique for evaluating the chirp parameter alpha of electroabsorption modulators is presented. The alpha parameter of a GaInAs/GaInAsP quantum-well (QW) electroabsorption modulator integrated with an active segment in a Fabry-Perot cavity has been evaluated by measuring the Fabry-Perot fringes. It has been shown that the relationship between absorption changes and refractive index changes is nonlinear and the alpha parameter is dependent on operating wavelengths.<>
Keywords :
III-V semiconductors; electro-optical devices; electroabsorption; gallium arsenide; gallium compounds; indium compounds; optical modulation; optical resonators; semiconductor quantum wells; Fabry-Perot cavity; Fabry-Perot fringes; GaInAs-GaInAsP; GaInAs/GaInAsP quantum well electroabsorption modulators; active segment; alpha parameter; chirp parameter; intracavity modulation; operating wavelengths; refractive index changes; Absorption; Chirp modulation; Fabry-Perot; Gain measurement; MOCVD; Refractive index; Resonance; Semiconductor lasers; Voltage; Wavelength measurement;
Journal_Title :
Photonics Technology Letters, IEEE
