Gain-coupled distributed-feedback (DFB) laser array for wavelength division multiplexing systems

Guo Ping Li

doi:10.1117/12.205281

23 March 1995 Gain-coupled distributed-feedback (DFB) laser array for wavelength division multiplexing systems

Guo Ping Li

Proceedings Volume 2402, Components for Wavelength Division Multiplexing; (1995) https://doi.org/10.1117/12.205281
Event: Photonics West '95, 1995, San Jose, CA, United States

Abstract

A review of multi-wavelength gain-coupled DFB laser arrays for wavelength division multiplexing is given, with emphasis on the application of the gain-coupling mechanism and the effective index changes by varying the ridge waveguide width. Fabrication and characterization results of long-wavelength InGaAsP/InP multiquantum-well gain-coupled DFB lasers and laser arrays are presented. Features of the devices are interpreted and simulated using theoretical models. It is demonstrated that due to the gain-coupling effect, seven singlemode lasing wavelengths around 1.55 micrometers with 1 - 2 nm spacing are obtained simultaneously. Despite the significant change in the ridge width, low threshold currents and small beam divergence are achieved by careful designs. Issues regarding practical applications of the array devices are discussed.

Citation Download Citation

Guo Ping Li "Gain-coupled distributed-feedback (DFB) laser array for wavelength division multiplexing systems", Proc. SPIE 2402, Components for Wavelength Division Multiplexing, (23 March 1995); https://doi.org/10.1117/12.205281

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