WDM Source Based on High-Power, Efficient 1280-nm DFB Lasers for Terabit Interconnect Technologies
| Autor: | Stewart T. M. Fryslie, Keith Guinn, Yiwen Shen, G.B. Morrison, Alexander Gazman, Leif A. Johansson, Keren Bergman, Milan Mashanovitch, Bob B. Buckley |
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| Rok vydání: | 2018 |
| Předmět: |
Interconnection
Materials science business.industry 02 engineering and technology Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 020210 optoelectronics & photonics Planar law Fiber laser Wavelength-division multiplexing 0202 electrical engineering electronic engineering information engineering Channel spacing Optoelectronics Insertion loss Terabit Electrical and Electronic Engineering business |
| Zdroj: | IEEE Photonics Technology Letters. 30:1929-1932 |
| ISSN: | 1941-0174 1041-1135 |
| DOI: | 10.1109/lpt.2018.2872597 |
| Popis: | We present a proof-of-concept eight-channel wavelength-division-multiplexed (WDM) source for future terabit interconnects based on a highly efficient laser array. The array is composed of novel, high-power DFB lasers with record electro-optical efficiency, operating at 1280 nm, with >250-mW laser output power and laser efficiencies of up to 36%. The eight-laser array, with ~100-GHz channel spacing is optically butt-coupled to a planar lightwave circuit that consists of low-loss silicon nitride waveguides clad with silicon oxide for appropriate optical routing. Two types of optical routing are explored: 1) all 8 laser wavelengths are mixed and output into 10 channels via a star coupler and 2) the laser wavelengths are combined into a single output via an arrayed waveguide grating router. The mixed/combined light is then butt-coupled to a fiber array to output the WDM source signal into polarization preserving single-mode fibers. Improvements in insertion loss, particularly from optical butt coupling, will make this approach a viable option for efficient WDM light sources. |
| Databáze: | OpenAIRE |
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