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Pattern dependence in high-speed Q-modulated distributed feedback laser.

Hongli Zhu, Yimin Xia, Jian-Jun He

|May 14, 2015

Summary

This summary is machine-generated.

This study explores pattern dependence in high-speed Q-modulated distributed feedback (DFB) lasers. Simulations reveal optimal design parameters for achieving excellent extinction ratios and low jitter in 40Gbps RZ modulation signals.

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Area of Science:

Photonics
Semiconductor Lasers
Optical Communications

Background:

High-speed optical communication systems demand advanced laser sources.
Distributed feedback (DFB) lasers are crucial for stable, single-mode operation.
Understanding pattern dependence is key to optimizing laser performance for high data rates.

Purpose of the Study:

To investigate pattern dependence in high-speed Q-modulated DFB lasers.
To analyze the impact of physical structure and material properties on laser performance.
To optimize laser design for high-speed modulation signals.

Main Methods:

Utilized an integrated traveling wave model for simulations.
Incorporated detailed structure parameters of gain, modulation, and phase sections.
Evaluated laser performance metrics including extinction ratio, jitter, and intensity fluctuation.

Main Results:

An example Q-modulated DFB laser achieved a 6.8dB extinction ratio.
Demonstrated a jitter of 4.7ps for 40Gbps RZ modulation.
Observed peak intensity fluctuation below 15%.

Conclusions:

The simulation method is effective for complex laser design and performance optimization.
The study provides physical insights into the operational mechanisms of Q-modulated DFB lasers.
Optimized laser designs can meet stringent requirements for high-speed optical communication.