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Full C-band tunable laser based on electroholography.

Noam Sapiens¹, Aharon J Agranat

¹Department of Applied Physics, The Brojde Center of Innovative Engineering and Computer Science, The Hebrew University, Jerusalem, Israel. ngem3@yahoo.com

|August 14, 2013

Summary

A novel tunable laser system spans the entire C band using an electroholography tuning mechanism. This tunable laser offers rapid wavelength switching, limited only by the gain medium

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Area of Science:

Optics and Photonics
Laser Technology
Fiber Optics

Background:

Tunable lasers are crucial for applications requiring precise wavelength control.
Existing tunable laser technologies face limitations in speed, range, or complexity.
The C-band spectrum is particularly important for optical communications.

Purpose of the Study:

To present a novel tunable laser system capable of spanning the entire C-band.
To demonstrate an electroholography-based tuning mechanism for rapid wavelength selection.
To explore different laser architectures utilizing electroholograms.

Main Methods:

Utilized an Erbium-doped fiber amplifier as the gain medium.
Incorporated a fiber ring resonator for laser cavity.

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Employed an electroholography-based tuning mechanism in the g44 configuration for electrical wavelength tuning.

Investigated two laser architectures based on the diffracting and direct beams of the electrohologram.

Main Results:

Successfully demonstrated a tunable laser spanning the entire C-band.
Achieved electrohologram switching times under 1 nanosecond.
Identified wavelength switching time is primarily limited by the gain medium relaxation time.
Presented two distinct laser architectures for outputting the tunable laser light.

Conclusions:

The developed electroholography-based tunable laser offers rapid wavelength switching capabilities across the C-band.
The presented laser architectures provide flexibility for different application needs.
This technology holds potential for advanced optical communication systems and spectroscopy.