Abstract
In this paper, a wavelength-division-multiplexing passive optical network (WDM-PON) system using small form-factor pluggable plus (SFP+) packaged full C-band tunable transceivers is demonstrated for the first time to our knowledge. Within the transceivers, a novel digital-supermode distributed Bragg reflector (DS-DBR) laser with a monolithically integrated Mach-Zehnder modulator is employed as the transmitter. A generic current control algorithm is used to drive the DS-DBR laser, which employs a laser current training sequence ensuring successful operation without the need for individual laser characterization. A pilot-tone-based feedback control loop is implemented using embedded hardware, which is able to lock the output wavelengths from three identical optical network units with less than ±3 GHz deviation from their assigned channels. Error-free transmission is achieved at a 10 GbE data rate. With the feedback control loop running continuously, the system shows a sensitivity of -23 dBm for a bit error rate of 10 -12 .
Original language | English |
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Article number | 7023470 |
Pages (from-to) | A28-A36 |
Number of pages | 9 |
Journal | Journal of Optical Communications and Networking |
Volume | 7 |
Issue number | 1 |
Early online date | 3 Oct 2014 |
DOIs | |
Publication status | Published - 1 Jan 2015 |
Keywords
- Fiber optics communications
- Laser tuning
- Passive optical networks
- Wavelength division multiplexing
ASJC Scopus subject areas
- Computer Networks and Communications