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Highly linear-polarized external cavity lasers hybrid integrated on planar lightwave circuit platform

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4 Author(s)
Ryun Kyung Kim ; Sch. of Inf. & Commun. Eng., SungKyunKwan Univ., Gyeonggi-Do ; Jong Hoon Lim ; Jeong Hwan Song ; Kyung Shik Lee

We propose and demonstrate, for the first time, a highly linear-polarized external cavity laser (ECL) integrated on planar lightwave circuit (PLC) with an in-PLC polarizer designed to improve polarization extinction ratio (PER). The in-PLC polarizer based on a 45deg-tilted grating was simply formed in the laser cavity composed of a Fabry-Peacuterot laser diode and a Bragg grating. The proposed ECL exhibited a PER value as high as 30 dB and single longitudinal mode oscillation with a high sidemode suppression ratio of 50 dB at 1310 nm

Published in:

Photonics Technology Letters, IEEE  (Volume:18 ,  Issue: 4 )