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Journal Article
1.3-μm and 10-Gbps Tunable DBR-LD for Low-cost Application of WDM-based Mobile Front Haul Networks
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- Authors
- Su Hwan Oh, Oh Kee Kwon, Ki Soo Kim, Chul Wook Lee
- Issue Date
- 2019-09
- Citation
- Optics Express, v.27, no.20, pp.29241-29247
- ISSN
- 1094-4087
- Publisher
- Optical Society of America (OSA)
- Language
- English
- Type
- Journal Article
- Project Code
- 18HB3300, Development of low-cost tunable laser for mobile front-haul network, Kisoo Kim
- Abstract
- We report a 1.3-쨉m and 10-Gbps tunable distributed Bragg reflector laser diode (DBR-LD) for the low-cost application of a wavelength division multiplex based mobile front-haul network. The device consists of gain, phase control, and DBR sections, implemented using a butt-coupling method through a monolithic integration and through the introduction of an etched mesa planar buried hetero-structure in a waveguide structure. From the work, a 560-쨉m long DBR-LD with a 220-쨉m long micro-heater DBR section has a threshold current of 10 mA 짹 1 mA and a tuning range of more than 15 nm within a heater injection current of ~100 mA. Spectral and dynamic tests for this LD show 16 channels spaced a wavelength grid of 0.8 nm with a side mode suppression ratio of greater 40 dB and clear eye openings with a dynamic extinction ratio of over 5.4 dB at an operating current of 60 mA.
- KSP Keywords
- 5 nm, Coupling method, Distributed Bragg reflector laser, Dynamic test, Injection current, Laser diode(LD), Low-cost, Micro-heater, Monolithic Integration, Phase control, Threshold current