Extended Transmission Reach Using Optical Filtering of Frequency-Modulated Widely Tunable SSG-DBR Laser

We propose a novel transmitter consisting of a frequency-modulated widely tunable super-structure-grating distributed Bragg reflector (SSG-DBR) laser and an optical filter. The SSG-DBR laser acts as a frequency modulating light source with a constant output power by modulating the reverse bias volta...

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Bibliographic Details
Published in:IEEE photonics technology letters 2008-02, Vol.20 (4), p.294-296
Main Authors: Matsuo, S., Kakitsuka, T., Segawa, T., Fujiwara, N., Shibata, Y., Oohashi, H., Yasaka, H., Suzuki, H.
Format: Article
Language:English
Subjects:
Bias
Directly modulated laser
Electric potential
Filtering
Filtration
Frequency
frequency- modulated laser
Laser tuning
Lasers
optical filter
Optical filters
optical minimum-shift keying (OMSK)
Optical modulation
Optical signal processing
Optical transmitters
Optical variables control
Phase modulation
Polycarbonates
super-structure grating (SSG)
Tunable circuits and devices
Tuning
Voltage
widely tunable laser
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Summary:We propose a novel transmitter consisting of a frequency-modulated widely tunable super-structure-grating distributed Bragg reflector (SSG-DBR) laser and an optical filter. The SSG-DBR laser acts as a frequency modulating light source with a constant output power by modulating the reverse bias voltage in the phase control (PC) region. By optically filtering the output light from the frequency-modulated laser, we have demonstrated 60- and 180-km transmissions for 20- and 10-Gb/s nonreturn-to-zero (NRZ) signals, respectively. The power penalty was 2.2 dB after the 180-km transmission of a 10-Gb/s NRZ signal as determined by bit-error-rate measurements. Furthermore, an extended transmission reach was achieved with a wide tuning range without controlling the bias and modulating voltages in the PC region.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2007.915634