Characterization of Frequency Drift of Sampled-Grating DBR Laser Module Under Direct Modulation
- Resource Type
- Periodical
- Authors
- Anandarajah, P. M.; Maher, R.; Barry, L. P.; Kaszubowska-Anandarajah, A.; Connoly, E.; Farrell, T.; McDonald, D.
- Source
- IEEE Photonics Technology Letters IEEE Photon. Technol. Lett. Photonics Technology Letters, IEEE. 20(2):72-74 Jan, 2008
- Subject
- Engineered Materials, Dielectrics and Plasmas
Photonics and Electrooptics
Frequency
Distributed Bragg reflectors
Optical transmitters
Wavelength division multiplexing
Optical modulation
Optical filters
Optical packet switching
Fiber lasers
Laser stability
Tunable circuits and devices
Dense wavelength-division multiplexing (DWDM)
direct intensity modulation
laser stability
optical fiber communications
tunable lasers (TLs)
- Language
- ISSN
- 1041-1135
1941-0174
The authors demonstrate the drift in frequency of a static sampled-grating distributed Bragg reflector (SG DBR) laser module when it is subjected to direct modulation. The magnitude of drift and its settling time is characterized as a function of the index of modulation. Results show that when the directly modulated SG DBR is optically filtered, as in a dense wavelength- division- multiplexed system, a power penalty of 6.7 dB is incurred in comparison to the unfiltered case.