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Updated: Jun 22, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Optical label encoding and swapping using half-bit delayed dark RZ payload and DPSK label.

C W Chow, H K Tsang

|June 6, 2009

Summary

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A novel Half-bit-delayed-dark-return-to-zero (HBDDRZ) payload with Differential Phase Shift Keying (DPSK) orthogonal labeling is proposed for optical label-switched networks. This method simplifies network operation by removing the need for precise extinction-ratio adjustments.

Area of Science:

Optical communications
Network engineering
Signal processing

Background:

Orthogonal labeling is crucial for future optical label-switched networks.
Existing methods require precise extinction-ratio adjustments, complicating network management.

Purpose of the Study:

To propose a new payload format, Half-bit-delayed-dark-return-to-zero (HBDDRZ), combined with Differential Phase Shift Keying (DPSK) orthogonal labeling.
To demonstrate a simplified approach for optical label-switched networks that reduces operational complexity.

Main Methods:

Generation of HBDDRZ payload using a nonlinear-optical-loop-mirror.
Encoding of the HBDDRZ payload with DPSK orthogonal labeling.
Demonstration of label swapping using birefringence switching.

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Quasi-light Storage for Optical Data Packets

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Published on: February 6, 2014

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Performance evaluation through 10-Gb/s bit-error-rate measurements.

Main Results:

The proposed HBDDRZ payload with DPSK orthogonal labeling eliminates the need for precise payload extinction-ratio adjustment at source and intermediate nodes.
High extinction-ratios for both payload and label enhance receiver margin.
The RZ-like nature of the demodulated DPSK label minimizes its impact from the HBDDRZ payload.

Conclusions:

The HBDDRZ payload with DPSK orthogonal labeling offers a robust and simplified solution for optical label-switched networks.
This approach improves receiver performance and reduces network operational overhead.