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Updated: May 12, 2026

Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy

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Nine-channel wavelength tunable single mode laser array based on slots.

Wei-Hua Guo1, Qiaoyin Lu, Marta Nawrocka

  • 1Department of Electrical & Computer Engineering, University of California Santa Barbara, CA 93106, USA. guow@ece.ucsb.edu

Optics Express
|April 24, 2013
PubMed
Summary
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This study presents a novel 9-channel tunable single-mode laser array. The device offers stable single-mode operation, high output power, and a wide tuning range, paving the way for integrated photonic applications.

Area of Science:

  • Photonics
  • Semiconductor Lasers
  • Integrated Optics

Background:

  • Developing tunable laser sources is crucial for optical communication and sensing.
  • Existing laser arrays often face challenges with integration and fabrication yield.

Purpose of the Study:

  • To present a novel 9-channel wavelength tunable single-mode laser array.
  • To demonstrate its performance characteristics and fabrication advantages.

Main Methods:

  • Fabrication of a slot waveguide-based laser array using standard photolithography.
  • Characterization of threshold current, side-mode suppression ratio (SMSR), output power, and tuning range under continuous wave (CW) conditions.
  • Evaluation of performance across a temperature range of 10°C to 45°C.

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Quasi-light Storage for Optical Data Packets
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Last Updated: May 12, 2026

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Published on: November 22, 2019

Quasi-light Storage for Optical Data Packets
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Main Results:

  • Achieved a threshold current of 19–21 mA at 20°C with the semiconductor optical amplifier (SOA) unbiased.
  • Demonstrated stable single-mode operation with SMSR > 50 dB.
  • Obtained output power > 37 mW for all 9 channels at 70 mA SOA injected current.
  • Achieved a quasi-continuous tuning range of approximately 27 nm across the specified temperature range.

Conclusions:

  • The presented laser array is monolithically integrable and fabricated using standard photolithography.
  • The design potentially overcomes yield issues associated with traditional facet cleaving.
  • This platform offers a promising solution for high-performance, manufacturable tunable laser arrays.