Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optical Fiber Communication Conference

All-optical flip-flop based on optical bistability in an integrated SOA/DFB-SOA

Young‐Il Kim, Jae Hun Kim, Young Min Jeon, Seok Lee, Deok Ha Woo, Sun Ho Kim

Published Jan 1, 2002• 6 citations
Publisher

Abstract

We have demonstrated for the first time an all-optical flip-flop based on optical bistability of an integrated SOA/DFB-SOA by applying an input signal with the period of 25.2 ns. An all-optical flip-flop based on optical bistability is expected to process the signal at an ultra-high speed in a light-wave communication. All-optical flip-flop has various applications such as all optical memory, demultiplexing, packet-header buffering, and retiming. Moreover, an integrated SOA/DFBSOA can perform all-optical logic operation and wavelength conversion by cross gain modulation.

DOI
10.1109/ofc.2002.1036183

Related papers

Broad-Band All-Optical Flip–Flop Based on Optical Bistability in an Integrated SOA/DFB-SOA

Young‐Il Kim, J.H. Kim, S. Lee +3 more

We have demonstrated a broad-band all-optical flip-flop for wavelength-division-multiplexing system based on optical bistability in a semiconductor optical amplifier (SOA)/distributed feedback (DFB)-SOA with wide gain bandwidth for both SOA and DFB-SOA regions. Input signal with two different wavelength selections of 1530.45 and 1578.12 nm and the repetition ration of about 6 ns is injected into the SOA/DFB-SOA.

IEEE Photonics Technology Letters•Feb 1, 2004•39 citations

All-optical flip-flop operation of VCSOA

Aaron M. Kaplan, Govind Prasad Agrawal, Drew N. Maywar

An all-optical flip-flop, the memory of which is based on dispersive bistability in a single vertical cavity semiconductor optical amplifier, is demonstrated experimentally. Flip-flop control is achieved using two mechanisms: cross-phase modulation to set the flip-flop and cross-gain modulation of the holding beam within a remote SOA to reset it. Optical control signals are sub-milliwatt in power and derived from a single 5 ns, 1539 nm initial pulse. Flip-flop operation at 1542 nm is polarisation insensitive to control signals and achieved with an on-off contrast greater than 3 dB.

Electronics Letters•Jan 13, 2009•25 citations

Optical bistability in a SOA/DFB-LD feedback scheme

Wouter D’Oosterlinck, Geert I. Morthier, Roel Baets +1 more

Optical bistability is investigated using a DFB laser diode connected with a SOA. Broadband operation and tunability of the domain of bistable responses is shown. The device can readily serve as an all-optical flip-flop.

Conference on Lasers and Electro-Optics•Jan 1, 2006•1 citation

Broad-Band All-Optical Flip-Flop Based on Optical Bistability in an Integrated SOA/DFB-SOA

김재헌, 윤태훈, Sun Ho Kim +3 more

•Jan 1, 2004•0 citations

Fast all-optical flip-flop based on a single distributed feedback laser diode

Koen Huybrechts, Geert I. Morthier, Roel Baets

Since there is an increasing demand for fast networks and switches, the electronic data processing imposes a severe bottleneck and all-optical processing techniques will be required in the future. All-optical flip-flops are one of the key components because they can act as temporary memory elements. Several designs have already been demonstrated but they are often relatively slow or complex to fabricate. We demonstrate experimentally fast flip-flop operation in a single DFB laser diode which is one of the standard elements in today's telecommunication industry. Injecting continuous wave light in the laser diode, a bistability is obtained due to the spatial hole burning effect. We can switch between the two states by using pulses with energies below 200 fJ resulting in flip-flop operation with switching times below 75 ps and repetition rates of up to 2 GHz.

Optics Express•Jul 15, 2008•85 citations

Optical Bistability in a Traveling-Wave SOA Connected to a DFB Laser Diode: Theory and Experiment

Wouter D’Oosterlinck, Geert I. Morthier, Roel Baets +1 more

We investigate the bistable response of a traveling-wave semiconductor optical amplifier (SOA) connected bidirectionally to a distributed feedback (DFB) laser diode. By contrast to dispersive DFB amplifiers, bistability is possible for a broad wavelength range of the injected optical signal. A theoretical analysis clarifies the origin of the phenomenon and the conditions under which it occurs. Numerical simulations and experimental results confirm the theoretical analysis. Experimentally obtained step heights up to 25 dB and widths of the bistability domain of 1-4 dB have been found

IEEE Journal of Quantum Electronics•Jul 11, 2006•14 citations
We have demonstrated for the first time an all-optical flip-flop based on optical bistability of an integrated SOA/DFB-SOA by applying an input signal with the period of 25.2 ns. An all-optical flip-flop based on optical bistability is expected to process the signal at an ultra-high speed in a light-wave communication. All-optical flip-flop has various applications such as all optical memory, demultiplexing, packet-header buffering, and retiming. Moreover, an integrated SOA/DFBSOA can perform all-optical logic operation and wavelength conversion by cross gain modulation.
An all-optical flip-flop, the memory of which is based on dispersive bistability in a single vertical cavity semiconductor optical amplifier, is demonstrated experimentally. Flip-flop control is achieved using two mechanisms: cross-phase modulation to set the flip-flop and cross-gain modulation of the holding beam within a remote SOA to reset it. Optical control signals are sub-milliwatt in power and derived from a single 5 ns, 1539 nm initial pulse. Flip-flop operation at 1542 nm is polarisation insensitive to control signals and achieved with an on-off contrast greater than 3 dB.
Since there is an increasing demand for fast networks and switches, the electronic data processing imposes a severe bottleneck and all-optical processing techniques will be required in the future. All-optical flip-flops are one of the key components because they can act as temporary memory elements. Several designs have already been demonstrated but they are often relatively slow or complex to fabricate. We demonstrate experimentally fast flip-flop operation in a single DFB laser diode which is one of the standard elements in today's telecommunication industry. Injecting continuous wave light in the laser diode, a bistability is obtained due to the spatial hole burning effect. We can switch between the two states by using pulses with energies below 200 fJ resulting in flip-flop operation with switching times below 75 ps and repetition rates of up to 2 GHz.
We investigate the bistable response of a traveling-wave semiconductor optical amplifier (SOA) connected bidirectionally to a distributed feedback (DFB) laser diode. By contrast to dispersive DFB amplifiers, bistability is possible for a broad wavelength range of the injected optical signal. A theoretical analysis clarifies the origin of the phenomenon and the conditions under which it occurs. Numerical simulations and experimental results confirm the theoretical analysis. Experimentally obtained step heights up to 25 dB and widths of the bistability domain of 1-4 dB have been found