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Highly external optical feedback tolerant 1.49 μm single-mode lasers with partially corrugated gratings

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5 Author(s)
Gotoda, M. ; Adv. Technol. R&D Center, Mitsubishi Electr. Corp., Amagasaki ; Nishimura, Tetsuya ; Matsumoto, K. ; Aoyagi, T.
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A 1490 nm InGaAsP single-mode laser diode, with high endurance against external optical feedback, was realized utilizing an optimized partially corrugated grating and a window-mirror-structure. The gratingpsilas length and the coupling coefficient were designed to enable moderate output power, low feedback sensitivity and a SMSR of 40 dB simultaneously. The relative intensity noise (RIN) was maintained less than -120 dB/Hz under strong external optical feedback as high as -10 dB.

Published in:

Semiconductor Laser Conference, 2008. ISLC 2008. IEEE 21st International

Date of Conference:

14-18 Sept. 2008