Title :
Analytical expressions for the FM and AM responses of an integrated laser-modulator
Author :
Brosson, Philippe ; Bissessur, Hans
Author_Institution :
Alcatel Alsthom Recherche, Marcoussis, France
fDate :
6/1/1996 12:00:00 AM
Abstract :
The need for low-chirp and compact transmitters for high-bit-rate optical links has led to the development of integrated laser electroabsorption modulators (ILM). We have investigated feedback effects inducing frequency chirp by developing a model treating the ILM as a whole and obtained analytical expressions of the FM and AM responses. The variation of the frequency chirp with the residual facet reflectivity of the modulator section is calculated. The model predicts the unusual peak in the measured frequency responses and has been used to define design rules
Keywords :
amplitude modulation; chirp modulation; distributed feedback lasers; electro-optical modulation; electroabsorption; frequency modulation; frequency response; integrated optics; optical transmitters; semiconductor lasers; AM response; DFB laser section; FM response; analytical expressions; compact transmitters; design rules; feedback effects; frequency chirp; frequency responses; high-bit-rate optical links; integrated laser electroabsorption modulators; integrated laser-modulator; low-chirp; modulator section; residual facet reflectivity; Chirp modulation; Frequency measurement; Frequency modulation; Laser feedback; Laser modes; Optical feedback; Optical fiber communication; Optical transmitters; Predictive models; Reflectivity;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.577390
