InGaAs/InP DHBT technology and design methodology for over 40 Gb/s optical communication circuits

2001 ◽  
Vol 36 (9) ◽  
pp. 1321-1327 ◽  
Author(s):  
P. Andre ◽  
S. Blayac ◽  
P. Berdaguer ◽  
J.-L. Benchimol ◽  
J. Godin ◽  
...  
Keyword(s):  
Optical Communication ◽  
Design Methodology ◽  
Communication Circuits ◽  
Technology And Design

scholarly journals All-optical Frequency Divider using TOAD based D-Flip-Flop

2021 ◽  
Vol 7 (01) ◽  
pp. 152-157
Author(s):  
Ashis Kumar Mandal
Keyword(s):  
Optical Communication ◽  
High Speed ◽  
Frequency Divider ◽  
Critical Parameters ◽  
Optical Frequency ◽  
Flip Flop ◽  
Light Pulses ◽  
Frequency Dividers ◽  
Communication Circuits ◽  
All Optical

From the last few decades the optical communication has been established as much easier process than electrical communication. Many optical proposed circuits have already been suggested in many fields in support of this. The optical communication circuits demand frequency dividers capable of operating well above 10 GHz. Here, an all-optical frequency divider using terahertz optical asymmetric demultiplexer (TOAD) based D-flip-flop is proposed in the optical domain in a configuration exactly like the standard electronic setup. It presents a high-speed flip-flop-based frequency divider incorporating a new high-speed latch topology with satisfactory performance. The proposed all-optical frequency division scheme has been theoretically demonstrated in this paper. In this scheme the input and output binary digits are expressed as the presence (1) and the absence (0) of the light pulses. The performance of this proposed optical realization is evaluated by numerical simulation that confirms its feasibility in terms of the choice of the critical parameters.

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