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Proceedings Paper

Effect of wavelength detuning on spectral and temperature characteristics of 1.3-um DFB lasers
Author(s): Seung Jo Jeong; Jung Koo Kang; K. S. Oh; Byung Kwon Kang; Tae-Jin Kim; Y. K. Sin
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Paper Abstract

Spectral characteristics of 1.3 micrometers DFB lasers with different wavelength detunings are investigated at various temperatures ranging from 20 to 80 degree(s)C. DFB lasers have different amounts of detuning at RT: almost no detuning, a positive detuning of 5 nm and a negative detuning of 25 nm. AR-HR coated 300 micrometers long DFB lasers have typical CW threshold currents of 9 mA, slope efficiencies of 0.27 mW/mA, and coupling coefficients (K) of 60 cm-1. For the DFB LD with a positive detuning, the detuning of +5 nm at 20 degree(s)C is changed to -15 nm at 80 degree(s)C with the SMSR of 38 dB maintained. Whereas, at 80 degree(s)C Fabry-Perot modes appear from the DFB LD with a negative detuning and a smaller SMSR of 35 dB is obtained from the DFB LD with almost no detuning. These results indicate that a DFB LD with a positive detuning shows better spectral characteristics than others.

Paper Details

Date Published: 2 May 1997
PDF: 6 pages
Proc. SPIE 3001, In-Plane Semiconductor Lasers: from Ultraviolet to Midinfrared, (2 May 1997); doi: 10.1117/12.273810
Show Author Affiliations
Seung Jo Jeong, Hyundai Electronics Industries Co., Ltd. (South Korea)
Jung Koo Kang, Hyundai Electronics Industries Co., Ltd. (South Korea)
K. S. Oh, Hyundai Electronics Industries Co., Ltd. (South Korea)
Byung Kwon Kang, Hyundai Electronics Industries Co., Ltd. (South Korea)
Tae-Jin Kim, Hyundai Electronics Industries Co., Ltd. (South Korea)
Y. K. Sin, Hyundai Electronics Industries Co., Ltd. (South Korea)


Published in SPIE Proceedings Vol. 3001:
In-Plane Semiconductor Lasers: from Ultraviolet to Midinfrared
Hong K. Choi; Peter S. Zory, Editor(s)

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