Related Experiment Video
Updated: Jun 8, 2026

08:48
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Long distance single-mode fiber transmission of multimode VCSELs by injection locking
Devang Parekh1, Bo Zhang, Xiaoxue Zhao
1Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, CA 94720, USA. dparekh@eecs.berkeley.edu
Optics Express
|October 14, 2010
Summary
Optical injection locking greatly enhances multimode vertical-cavity surface-emitting laser (MM-VCSEL) transmission distance over standard single-mode fiber. Distances up to 90 km at 10 Gb/s were achieved using frequency chirp inversion and mode suppression.
Area of Science:
- Photonics
- Optical Communications
- Laser Technology
Background:
- Multimode vertical-cavity surface-emitting lasers (MM-VCSELs) offer cost-effective solutions for short-reach optical communication.
- Extending the transmission distance of MM-VCSELs over standard single-mode fiber (SMF) is crucial for broader network integration.
Purpose of the Study:
- To investigate the feasibility of enhancing MM-VCSEL transmission distance using optical injection locking.
- To achieve high-speed data transmission over long-haul SMF links with MM-VCSELs.
Main Methods:
- Employing optical injection locking to synchronize MM-VCSEL output with a master laser.
- Implementing frequency chirp inversion techniques to mitigate chromatic dispersion effects.
- Utilizing higher-order transverse mode suppression to improve beam quality and reduce modal noise.
Main Results:
- Demonstrated a significantly enhanced transmission distance for MM-VCSELs over standard SMF.
- Achieved reliable data transmission at 10 Gb/s over a distance of 90 km.
- Verified the effectiveness of frequency chirp inversion and mode suppression in improving signal integrity.
Conclusions:
- Optical injection locking is a viable technique for extending MM-VCSEL reach in long-haul fiber optic systems.
- The combined approach of injection locking, chirp inversion, and mode suppression enables high-speed, long-distance MM-VCSEL communication.
- This advancement opens possibilities for cost-effective, high-performance optical networks.

