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Low-Loss Cascaded Mach–Zehnder Multiplexer Integrated $25\hbox{-}{\rm Gbit}/{\rm s}\times 4\hbox{-}{\rm Lane}$ EADFB Laser Array for Future CFP4 100 GbE Transmitter
- Source :
- IEEE Journal of Quantum Electronics. 49:1001-1007
- Publication Year :
- 2013
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2013.
-
Abstract
- A 4 × 25-Gb/s electroabsorption modulator integrated with a distributed feedback (DFB) laser (EADFB laser) array monolithically integrated with a low-loss optical multiplexer (MUX) is developed for 100 GbE transmitters for the first time. A cascaded Mach-Zehnder (MZ) filter, which has no intrinsic loss, is used as the MUX. The design and fabrication of the MZ-MUX for 100 GbE are thoroughly described. The measured loss of fabricated MZ-MUX is 2-3 dB, which is improved by 4 dB compared with that of the conventional 1 × 4 multimode interference MUX. The MZ-MUX is monolithically integrated with a four-EADFB-laser array and the output power of the chip is increased by 3 dB compared with that of a conventional 4 × 25-Gb/s monolithically integrated chip. With the folded layout, the size of the chip is similar to that of the conventional chip. The fabricated chip is packaged into a very compact transmitter optical subassembly (TOSA). The system requirements are satisfied with semi-cooled operation, and very clear eye openings are obtained after 10-km single-mode-fiber transmission. The adjustment of filter spectra by current injection is also shown, and fine tuning is possible with very low injection current.
- Subjects :
- Materials science
business.industry
Transmitter
Condensed Matter Physics
Laser
Mach–Zehnder interferometer
Chip
Multiplexer
Atomic and Molecular Physics, and Optics
law.invention
Transmission (telecommunications)
Filter (video)
law
Optoelectronics
Electrical and Electronic Engineering
business
Optical filter
Subjects
Details
- ISSN :
- 15581713 and 00189197
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- IEEE Journal of Quantum Electronics
- Accession number :
- edsair.doi...........1860cb068919c7337fa5e9179226924c