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Journal Article A 10 × 10-Gb/s DFB-LD Array Integrated With PLC-Based AWG for 100-Gb/s Transmission
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Authors
Oh Kee Kwon, Young-Tak Han, Young Ahn Leem, Jang-Uk Shin, Chul Wook Lee, Ki Soo Kim
Issue Date
2014-12
Citation
IEEE Photonics Technology Letters, v.26, no.21, pp.2177-2180
ISSN
1041-1135
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LPT.2014.2349072
Abstract
We describe a hybrid integration module of a (10 × 10\)-Gb/s distributed feedback laser diode array (DFB-LDA) and a planar light-wave circuit-based arrayed waveguide grating (AWG). For fabrication of the DFB-LDA, we adopted a selective area growth technique to tailor the channel gain properly, and E-beam lithography to accurately control the channel lasing wavelength and grating phase. For implementation of the AWG, we introduced a 2%-??) structure to reduce the coupling loss between the AWG and DFB-LDA, and designed the tapered and parabolic waveguides at the junctions of the free propagation regions to widen the spectral passband width (i.e., a-1-dB spectral width of 3 nm). The developed module shows a side-mode suppression ratio of >45 dB, a clear eye opening with a dynamic extinction ratio of >4.4 dB at 10 Gb/s, and a power penalty of <1.5 dB after a 2-km transmission for all channels.