Electrically-pumped directly-modulated tunable VCSEL for metro DWDM applications

Li, G.S.; Nabiev, R.F.; Yuen, W.; Jansen, M.; Davis, Dena S.; Chang-Hasnain, Connie J.

doi:10.1109/ecoc.2001.988891

Cited by 11 publications

(2 citation statements)

References 3 publications

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“…Other research teams, notably Stanford University [15], Cornell University [16], Coretek Inc. [17], Tokyo Institute of Technology [18] and the US Air Force Institute of Technology [19], subsequently published similar findings. Recently, the team at Bandwdith9 demonstrated the first 1550 nm tunable VCSEL which is electrically-pumped and directly modulated at 2.5 Gbps [20][21]. Such devices will find major applications in DWDM metro networks.…”

Section: Wavelength Engineering In Vcselmentioning

confidence: 99%

1.55-μ m tunable VCSEL for metro-WDM applications

Chang-Hasnain

2001

SPIE Proceedings

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Wavelength-tunable lasers, detectors, and optical filters are expected to play a pivotal role in the future ultrahigh bandwidth dense-wavelength-division-multiplexed (DWDM) optical networks, enabling revolutionary new applications such as wavelength-on-demand in a reconfigurable all-optical network. Combining the unique single wavelength property of a vertical cavity and the wide mechanical movement of a MEMS mirror, we are able to demonstrate photonic devices with a very wide tuning range and excellent performance. Electrically-pumped, continuously tunable VCSEL emitting in 1530-1620 nm wavelength regime is reported. The VCSELs exhibit a continuous, repeatable and hysterisis-free wavelength-tuning characteristic. Further, the VCSELs are directly modulated at 2.5 Gbps and has >45 dB side mode suppression ratio (SMSR) over the entire tuning range. Accurate wavelength locking is achieved in ~200 usec by a simple universal locker.

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Section: Wavelength Engineering In Vcselmentioning

confidence: 99%

1.55-μ m tunable VCSEL for metro-WDM applications

Chang-Hasnain

2001

SPIE Proceedings

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“…A circulator is used to couple the light from the master DFB/VCSEL into the follower VCSEL. The follower lasers used in this experiment are directly modulated VCSELs around 1550 nm with a cantilever structure for wavelength tuning [13]. The output is monitored at the third port of the circulator.…”

Section: A Frequency-response Enhancementmentioning

confidence: 99%

Injection locking of VCSELs

Chang

Chrostowski

Chang-Hasnain

2003

IEEE J. Select. Topics Quantum Electron.

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149

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Injection locking has been actively researched for its possibility to improve laser performance for both digital and analog applications. When a modulated follower laser (also termed "slave" laser) is locked to the master laser, its nonlinear distortion and frequency chirp may be reduced. As well, the resonance frequency can increase to several times higher than its free running case. In this paper, we show that the frequency response (S21) of an injection-locked laser is similar to a parasitic-limited laser with a high resonance frequency. The S21 was studied experimentally and the condition to achieve a flat, enhanced frequency response was identified. For analog applications, a record 112 dB-Hz 2 3 , single-tone third harmonic spur-free dynamic range of a 1.55m vertical cavity surface emitting lasers (VCSEL) was demonstrated. An improvement was attained for a wide-injection parameter space. In a 50-km 2.5-Gb/s digital link, a 2-dB power penalty reduction at 10 9 bit error rate was also demonstrated. As a novel application, an injection-locked uncooled tunable VCSEL was shown to have a reasonable modulation performance in a wide abient temperature range. The VCSEL was locked to a designated wavelength and the injection compensated the temperature-induced performance degradation. This concept can be extremely attractive for low-cost dense wavelength division muliplexed transmitters.

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