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Journal Article
All-Optical Gain-Clamped EDFA Using External Saturation Signal for Burst-Mode Upstream in TWDM-PONs
- Authors
- Han Hyub Lee, Jong Hyun Lee, Sang Soo Lee
- Issue Date
- 2014-07
- Citation
- Optics Express, v.22, no.15, pp.18186-18194
- ISSN
- 1094-4087
- Publisher
- Optical Society of America(OSA)
- Language
- English
- Type
- Journal Article
- Abstract
- While the gain-transient suppression of erbium-doped fiber amplifiers (EDFAs) has been widely studied, the large interval between upstream burst-mode signals from optical network units (ONUs) in time- and wavelength-division multiplexing passive optical networks (TWDM-PONs) presents new challenges. A non-gain-clamped EDFA acting as a preamplifier does not have the desired overshoot on the burst-mode signal when there are only a few ONUs in operation in the TWDM-PON. To solve this problem, we propose an all-optical gain-clamped EDFA (OGC-EDFA) that uses a distributed feedback laser diode to generate a saturation signal. An OGC-EDFA based on a ring laser configuration was also tested to compare the overshoot performance; the both OGC-EDFAs showed negligible overshoot performance. Given the negligible overshoot and wide input dynamic range of the OGC-EDFA, the proposed amplifier is thought to be a simple, low-cost solution for TWDM-PON applications. © 2014 Optical Society of America.
- KSP Keywords
- Burst-mode, Distributed feedback laser diode, Distributed feedback lasers(DFBs), Erbium-doped fiber amplifier(EDFA), Low-cost, Optical Network Units(ONU), Passive optical network, TWDM-PON, Wavelength-Division multiplexing(WDM), all-optical, dynamic range
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
