BROWSE
Detail
Journal Article
A Multi-Channel Etched-Mesa PBH DFB Laser Array Using an SAG Technique
Cited 10 time in 
Share 
Share
- Authors
- Su Hwan Oh, Oh Kee Kwon, Ki Soo Kim, Young Tak Han, Chul Wook Lee, Young Ahn Leem, Jang Wook Shin, Eun Soo Nam
- Issue Date
- 2015-12
- Citation
- IEEE Photonics Technology Letters, v.27, no.24, pp.2567-2570
- ISSN
- 1041-1135
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Abstract
- We present a multi-channel {\\lambda}/4-shifted distributed feedback laser diode array (DFB-LDA) for the low-cost application of wavelength division multiplexing-based datacenter networks. The gain spectrum and lasing wavelength of each channel are controlled by utilizing selective area growth and E-beam lithography techniques, respectively. To reduce the power consumption and improve the channel uniformity of the proposed array, a planar-buried hetero-structure (PBH) is introduced and the region containing the active region and the current blocking structures are etched in a mesa form (i.e., an etched mesa PBH). From this study, it was found that an 8-channel 300-μm-long anti-reflection (AR) {\\lambda}/4-shifted DFB-LDA has a threshold current of 10 mA, 짹1.5 mA, and a side mode suppression ratio of over 50 dB for all channels. A transmission test for this LDA showed a clear eye opening with a dynamic ratio of over 4.5 dB at 10 Gb/s, and a power penalty of less than 2 dB after a 2-km transmission.
- KSP Keywords
- Anti-Reflection, DFB laser array, Data Center Networks, Distributed feedback laser diode, Distributed feedback lasers(DFBs), E-beam Lithography, Gain spectrum, Laser diode(LD), Laser diode array, Low-cost, Power Consumption