Multigigahertz Bandwidth FM Response of Frequency Tunable Two-Electrode DFB Lasers

A. E. Willner; M. Kuznetsov; I. P. Kaminow; U. Koren; T. L. Koch; C. A. Burrus; G. Raybon

doi:10.1109/68.43376

Multigigahertz Bandwidth FM Response of Frequency Tunable Two-Electrode DFB Lasers

A. E. Willner, M. Kuznetsov, I. P. Kaminow, U. Koren, T. L. Koch, C. A. Burrus, G. Raybon

Optical Sciences, College of

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19 Scopus citations

Abstract

We have characterized the FM response of frequency- tunable two-electrode DFB lasers operating at 1.35 µm. Under certain bias conditions, an FM response of ~ 1 GHz/mA is flat over a range of modulating frequencies from 10 kHz to several hundred megahertz. This region is followed by a shallow dip and a high-frequency relaxation resonance peak, allowing an overall 3 dB FM bandwidth of ~5 GHz. We believe this to be the widest FM bandwidth reported to date for such lasers; however, variations of the phase of the FM response could limit the useful bandwidth in an FSK system. The experimental response is a function of static tuning conditions, with significant differences between regions of red and blue frequency shift with increasing current. The observed behavior is well represented by theoretical curves derived from a small-signal analysis.

Original language	English (US)
Pages (from-to)	360-363
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	1
Issue number	11
DOIs	https://doi.org/10.1109/68.43376
State	Published - Nov 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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title = "Multigigahertz Bandwidth FM Response of Frequency Tunable Two-Electrode DFB Lasers",

abstract = "We have characterized the FM response of frequency- tunable two-electrode DFB lasers operating at 1.35 µm. Under certain bias conditions, an FM response of ~ 1 GHz/mA is flat over a range of modulating frequencies from 10 kHz to several hundred megahertz. This region is followed by a shallow dip and a high-frequency relaxation resonance peak, allowing an overall 3 dB FM bandwidth of ~5 GHz. We believe this to be the widest FM bandwidth reported to date for such lasers; however, variations of the phase of the FM response could limit the useful bandwidth in an FSK system. The experimental response is a function of static tuning conditions, with significant differences between regions of red and blue frequency shift with increasing current. The observed behavior is well represented by theoretical curves derived from a small-signal analysis.",

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AU - Willner, A. E.

AU - Kuznetsov, M.

AU - Kaminow, I. P.

AU - Koren, U.

AU - Koch, T. L.

AU - Burrus, C. A.

AU - Raybon, G.

PY - 1989/11

Y1 - 1989/11

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AB - We have characterized the FM response of frequency- tunable two-electrode DFB lasers operating at 1.35 µm. Under certain bias conditions, an FM response of ~ 1 GHz/mA is flat over a range of modulating frequencies from 10 kHz to several hundred megahertz. This region is followed by a shallow dip and a high-frequency relaxation resonance peak, allowing an overall 3 dB FM bandwidth of ~5 GHz. We believe this to be the widest FM bandwidth reported to date for such lasers; however, variations of the phase of the FM response could limit the useful bandwidth in an FSK system. The experimental response is a function of static tuning conditions, with significant differences between regions of red and blue frequency shift with increasing current. The observed behavior is well represented by theoretical curves derived from a small-signal analysis.

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Multigigahertz Bandwidth FM Response of Frequency Tunable Two-Electrode DFB Lasers

Abstract

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