5 Gbit/s direct optical DPSK modulation of a 1530-nm DFB laser

Vodhanel, R.S.

doi:10.1109/68.36047

Cited by 32 publications

(10 citation statements)

References 6 publications

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“…The reduction of jitter and noise achieved with the balanced detection would allow for real-time and single shot TRC measurements. Furthermore, this balanced set-up could be used as demodulator of phase modulated optical signals to recover the instantaneous phase profile, in a similar manner to the balanced PROUD set-up based on a MZ interferometer [25].…”

Section: Resultsmentioning

confidence: 99%

“…The output of the interferometer is divided by a 50/50 coupler such that half of the signal is directed to an optical spectrum analyzer (OSA) and half to a fast photodiode and oscilloscope (20 GHz bandwidth). Our interferometer is based on a birefringent medium, in a similar way to those previously used for other applications [25,26]. It consists of (i) one linear polarizer oriented at 45° with respect to the slow and fast axes of a polarization maintaining fiber (PMF), (ii) the PMF and (iii) a rotatable linear polarizer with variable polarization angle β, measured with respect to the slow axis of the PMF.…”

Section: Measurement Technique and Experimental Set-upmentioning

confidence: 99%

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Time resolved chirp measurements of gain switched semiconductor laser using a polarization based optical differentiator

Consoli¹,

Tijero²,

Esquivias³

2011

Opt. Express

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Abstract:We present a novel implementation of the "phase reconstruction using optical ultra fast differentiation" (PROUD) technique and apply it to characterize the time resolved chirp of a gain switched semiconductor laser. The optical temporal differentiator is a fiber based polarization interferometer. The method provides a fast and simple recovery of the instantaneous frequency from two temporal intensity measurements, obtained by changing the spectral response of the interferometer. Pulses with different shapes and durations of hundreds of picoseconds are fully characterized in amplitude and phase. The technique is validated by comparing the measured pulse spectra with the reconstructed spectra obtained from the intensity and the recovered phase. 792-794 (1998). 5. C. Dorrer and I. Kang, "Highly sensitive direct characterization of femtosecond pulses by electro-optic spectral shearing interferometry," Opt. Lett. 28(6), 477-479 (2003). 6. C. Dorrer and I. Kang, "Simultaneous temporal characterization of telecommunication optical pulses and modulators by use of spectrograms," Opt. Lett. 27(15), 1315-1317 (2002). 7. J. R. Fienup, "Phase retrieval algorithms: a comparison," Appl. Opt. 21(15), 2758-2769 (1982). 8. R. W. Gerchberg and W. O. Saxton, "A practical algorithm for the determination of the phase from image and diffraction plane pictures," Optik (Stuttg.) 35, 237-246 (1972). 9. N. S. Bergano, "Wavelength discriminator method for measuring dynamic chirp in DFB lasers," Electron. Lett. 1296-1297 (1988). 10. C. Laverdiere, A. Fekecs, and M. Tetu, "A new method for measuring time-resolved frequency chirp of high bit rate sources," IEEE Photon. Technol. Lett. 15(3), 446-448 (2003). 11. K. Sato, S. Kuwahara, and Y. Miyamoto, "Chirp characteristics of 40-Gb/s directly modulated distributedfeedback laser diodes," J. Lightwave Technol. 23(11), 3790-3797 (2005). 12. S. Tammela, H. Ludvigsen, T. Kajava, and M. Kaivola, "Time-resolved frequency chirp measurement using a silicon-wafer etalon," IEEE Photon. Technol. Lett. 9(4), 475-477 (1997 19872-19881 (2008) ©2011 Optical Society of America 24(20),

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Section: Resultsmentioning

confidence: 99%

Section: Measurement Technique and Experimental Set-upmentioning

confidence: 99%

Time resolved chirp measurements of gain switched semiconductor laser using a polarization based optical differentiator

Consoli¹,

Tijero²,

Esquivias³

2011

Opt. Express

View full text Add to dashboard Cite

show abstract

“…Figure 2.1 shows the basic block diagram of the communication system. This design is based heavily on prior research by Kiasaleh [4], and others [5]- [9]. Before discussing the mathematical details of this system, a brief qualitative description is given.…”

Section: B Phase Modulation and Dpskmentioning

confidence: 99%

Characterization of an Optical Self-Homodyne DPSK Receiver

Elmasry¹

2002

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“…In [4], an optical differential phase shift keying (DPSK) modulation of a distributed feedback (DFB) laser was reported with direct detection. Similarly, in [5] a direct phase modulated DFB with DPSK data was proposed for optical network unit (ONU) Tx and detected with a heterodyne receiver (Rx).…”

Section: Introductionmentioning

confidence: 99%