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All-optical flip-flop multimode interference bistable laser diode

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3 Author(s)
Takenaka, M. ; Res. Center for Adv. Sci. & Technol., Univ. of Tokyo, Japan ; Raburn, M. ; Nakano, Y.

All-optical flip-flop operation of multimode interference bistable laser diodes (MMI-BLDs) was experimentally demonstrated for the first time. The MMI-BLD was prepared with a conventional ridge waveguide laser diode fabrication procedure, suitable for photonic integrated circuits. Bistable switching via two-mode bistability was obtained with approximately 0-dBm input powers due to cross-gain saturation and the saturable absorbers. Bit-length conversion was successfully obtained with noninverted and inverted outputs. This device will be useful in future photonic systems requiring all-optical latching functions such as optical memory, self-routing, and further optical signal processing.

Published in:

Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 5 )