Monolithic 40-GHz Mode-Locked MQW DBR Lasers for High-Speed Optical Communication Systems

Kaiser, R.; Hüttl, B.

doi:10.1109/jstqe.2006.885330

Cited by 62 publications

(35 citation statements)

References 28 publications

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“…The total RF locking-range of 440 MHz for a 21 GHz device means the tuning percentage of more than 2% is higher than the record published by monolithic hybrid modelocked laser at 1.55 µm [13], [14] and comparable to the widest ranges reported in monolithic actively mode-locked lasers [15]. Moreover, these were achieved with special RF impedance matching circuits plus multi-section devices to extend the locking-range.…”

Section: A Wide Rf Locking-rangementioning

confidence: 79%

“…However, the RF lockingrange is usually limited to few tens of MHz unless a specially designed RF circuit is utilized along with a complex multisection cavity structure for wide tuning of the repetition rate [13]- [15]. Such developments have produced locking-ranges of 500 MHz for hybrid [14] and 1.8 GHz for actively modelocked lasers at 40 GHz [15]. Increasing the RF locking-range, beyond the cleaving error of the device, is highly desirable to compensate any process related error between the repetition rate of the device and the pre-defined frequency of the system.…”

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confidence: 99%

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Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Sooudi

Sygletos

Ellis

et al. 2012

IEEE J. Quantum Electron.

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Abstract-In this paper, we describe generation and application of wide, narrow linewidth optical frequency combs using dualmode injection-locking of InP quantum-dash mode-locked lasers. In the first part, the dependence of the RF locking-range on the device's absorber voltage is experimentally investigated. Under optimized absorber voltage, a continuous, wide RF locking-range of ≈400 MHz is achievable for lasers with 21 GHz repetition rate. The total RF locking-range of ≈440 MHz is possible considering of locking-range for positive and negative absorber voltages. This wide tuning >2% of the repetition rate, a record for a monolithic mode-locked laser, is reported from a two-section device without any additional passive section or extended-cavity for repetition rate tuning. It is shown that the effective RF locking-range in dual-mode injection corresponds to the optical locking-range and repetition rate tuning under CW injection which is wider when the free-running mode-locking operation is "less stable". The widest comb consists of 35 narrow lines within 10 dB of the peak, spanning ≈ 0.7 THz, generating 3.7 ps pulses. In the second part, we show the first demonstration of multi pump phase-synchronization of two 10 Gb/s DPSK channels in a phasesensitive amplifier using dual-mode injection-locking technique. The phase-sensitive amplifier based on "black box" scheme shows more than 7 dB phase-sensitive gain and error free performance for both input channels with 1 dB penalty.Index Terms-Mode-locked lasers, optical-injection-locking, optical frequency combs, quantum-dash lasers, and phasesensitive amplifiers.

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Section: A Wide Rf Locking-rangementioning

confidence: 79%

mentioning

confidence: 99%

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Sooudi

Sygletos

Ellis

et al. 2012

IEEE J. Quantum Electron.

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“…The MLLs being used have been supplied from HHI, Berlin [2]. They are multi-section devices comprising SA, gain and phase sections along with a Distributed Bragg Reflector (DBR) as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…M ODE-LOCKED lasers (MLLs) are widely used in a number of applications including optical clock recovery, optical time division multiplexing and packet switching [1], [2]. Typically they are fabricated from a standard Fabry-Perot (FP) laser which has a short saturable absorber (SA) section placed within the cavity.…”

Section: Introductionmentioning

confidence: 99%

Study of Millimeter Wave Phase Shift in 40 GHz Hybrid Mode Locked Lasers

Khawaja

Cryan

2009

IEEE Microw. Wireless Compon. Lett.

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Abstract-An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems. Both magnitude and phase of the modulation response are measured and a "plateau" is observed in the magnitude response which corresponds to the locking range of the system. Phase shifts of greater than 90 are observed and such devices could have application in millimeter wave radio-over-fiber phased array antenna systems.Index Terms-Millimeter wave (mm-wave), mode locked laser (MLL) , vector network analyzer.

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“…The MLL is supplied by HHI, Berlin [8] having a total device length of 1080μm which produces an output pulse repetition frequency of around 40GHz. The MLL has an excellent optical output power characteristic of ~ 7.5mW into a single mode fiber lens (SMF lens) at 110mA gain section current and at 15 o C. The MLL passive mode locking frequency range has been characterised and is found to be 446.7MHz as shown in [6].…”

Section: Resultsmentioning

confidence: 99%

A hybrid mode locked laser as millimetre wave modulated data source for radio-over-fiber systems

Khawaja

Cryan

2009

2009 IEEE/LEOS Summer Topical Meeting

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Monolithic 40-GHz Mode-Locked MQW DBR Lasers for High-Speed Optical Communication Systems

Cited by 62 publications

References 28 publications

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Optical Frequency Comb Generation Using Dual-Mode Injection-Locking of Quantum-Dash Mode-Locked Lasers: Properties and Applications

Study of Millimeter Wave Phase Shift in 40 GHz Hybrid Mode Locked Lasers

A hybrid mode locked laser as millimetre wave modulated data source for radio-over-fiber systems

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