Title :
25-Gb/s Multi-channel 1.3-µm Surface-emitting Laser
Author :
Adachi, K. ; Shinoda, K. ; Kitatani, T. ; Matsuoka, Y. ; Sugawara, T. ; Tsuji, S.
Author_Institution :
Central Res. Lab., Hitachi, Ltd., Tokyo, Japan
Abstract :
Recent advances in our multi-channel 1.3-μm lens-integrated surface-emitting-laser (LISEL) arrays for massive data links are described. The basic structure of a LISEL array consists of a short InGaAlAs multiple-quantum-well (MQW) distributed-feedback (DFB) active-stripe array monolithically integrated with both a 45° total reflection mirror and an aspheric collimation lens. A four-channel LISEL array based on this structure was developed. This array exhibited clear 25-Gb/s eye openings up to 50°C over the all four channels and a total output of 100 Gb/s. A multiple-wavelength LISEL array for wavelength-division-multi-plexing applications was also developed. To obtain multiple-wavelength emission, the DFB gratings were precisely modified by electron beam lithography. The fabricated laser array exhibited nine-wavelengths stable single-mode operations (SMSR >; 40 dB) between 1260 and 1290 nm at 3.7-nm intervals, and a clear 25-Gb/s eye opening for each wavelength. These two LISELs have demonstrated their suitability for next-generation multi-channel data links including 100Gb Ethernet and optical interconnections.
Keywords :
aspherical optics; diffraction gratings; distributed feedback lasers; electron beam lithography; gallium arsenide; gallium compounds; indium compounds; integrated optics; integrated optoelectronics; laser mirrors; laser modes; laser stability; lenses; optical collimators; optical communication equipment; optical fibre LAN; optical interconnections; quantum well lasers; semiconductor laser arrays; surface emitting lasers; telecommunication channels; wavelength division multiplexing; DFB gratings; Ethernet; InGaAlAs; MQW; aspheric collimation lens; bit rate 100 Gbit/s; bit rate 25 Gbit/s; electron beam lithography; four-channel LISEL array; lens-integrated surface-emitting-laser arrays; multiple-quantum-well distributed-feedback active-stripe array; next-generation multichannel data links; optical interconnections; stable single-mode operations; total reflection mirror; wavelength 1.3 mum; wavelength 1260 nm to 1290 nm; wavelength-division-multiplexing; Arrays; Fiber lasers; Indium phosphide; Lenses; Threshold current; Vertical cavity surface emitting lasers;
Conference_Titel :
Compound Semiconductor Week (CSW/IPRM), 2011 and 23rd International Conference on Indium Phosphide and Related Materials
Conference_Location :
Berlin
Print_ISBN :
978-1-4577-1753-6
Electronic_ISBN :
978-3-8007-3356-9
