IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524
Special Section on Recent Progress in Active Photonic Device Technologies
Wide-Tuning-Wavelength-Range LGLC Laser with Low-Loss Dual-Core Spot Size Converter
Takanori SUZUKIHideo ARIMOTOTakeshi KITATANIAki TAKEITakafumi TANIGUCHIKazunori SHINODAShigehisa TANAKAShinji TSUJITatemi IDOJun IGRASHIAtsushi NAKAMURAKazuhiko NAOEKenji UCHIDA
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2012 Volume E95.C Issue 7 Pages 1272-1275

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Abstract

A dual-core spot size converter (DC-SSC) is integrated with a lateral grating assisted lateral co-directional coupler (LGLC) tunable laser by using no additional complicated fabrication processes. The excess loss due to the DC-SSC is only 0.5dB, and narrow full width half maximums (FWHMs) of vertical and horizontal far-field patterns (FFPs) produced by the laser are about 25° and 20°. This integration causes no degradations of the performance of the LGLC laser; in other words, it maintains good lasing characteristics, namely, wide tuning range of over 68nm and SMSR of over 35dB in the C-band under a 50°C semi-cooled condition.

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© 2012 The Institute of Electronics, Information and Communication Engineers
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