High efficiency side-coupling of light into optical fibres using imbedded v-grooves

Ripin, D.J.; Goldberg, L.

doi:10.1049/el:19951429

Cited by 119 publications

(39 citation statements)

References 2 publications

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“…Pump power coupled into the low-loss outer waveguide is eventually absorbed by the gain-media within the inner single-mode core. The ability to accept output from multimode pump lasers in the large-NA outer waveguide, significantly increases pump coupling efficiency and available pump power levels, enabling the use of efficient highpower (multi-Watt) sources with η pump =∼50% [360-362] and a variety of low-loss pump-coupling and combining strategies [75,349,[363][364][365][366][367][368][369][370][371][372].…”

Section: Amplifier Efficiencymentioning

confidence: 99%

Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

117

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Free-space laser communication systems have the potential to provide flexible, high-speed connectivity suitable for long-haul intersatellite and deep-space links. For these applications, power-efficient transmitter and receiver designs are essential for cost-effective implementation. State-of-the-art designs can leverage many of the recent advances in optical communication technologies that have led to global wideband fiber-optic networks with multiple Tbit/s capacities. While spectral efficiency has long been a key design parameter in the telecommunications industry, the many THz of excess channel bandwidth in the optical regime can be used to improve receiver sensitivities where photon efficiency is a design driver. Furthermore, the combination of excess bandwidth and average-power-limited optical transmitters has led to a new paradigm in transmitter and receiver design that can extend optimized performance of a single receiver to accommodate multiple data rates. This paper discusses state-of-the-art optical transmitter and receiver designs that are particularly well suited for average-power-limited photon-starved links where channel bandwidth is readily available. For comparison, relatively simple direct-detection systems used in short terrestrial or fiber optic links are discussed, but emphasis is placed on mature high-performance photon-efficient systems and commercially available technologies suitable for operation in space. The fundamental characteristics of optical sources, modulators, amplifiers, detectors, and associated noise sources are reviewed along with some of the unique properties that distinguish laser communication systems and components from their RF counterparts. Also addressed is the interplay between modulation format, transmitter waveform, and receiver design, as well as practical tradeoffs and implementation considerations that arise from using various technologies.

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Section: Amplifier Efficiencymentioning

confidence: 99%

Laser communication transmitter and receiver design

Caplan

2007

J Optic Comm Rep

117

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“…Examples of which include waveguide coupling [1,2], optical pumping [3,4] and fabrication of micromechanical sensor systems [5,6]. Adhesion is usually achieved through use of glues such as epoxy [7], a fusion splice [8] or glass frit [9], which do exhibit limitations.…”

Section: Introductionmentioning

confidence: 99%

Planarised optical fiber composite using flame hydrolysis deposition demonstrating an integrated FBG anemometer

Holmes¹,

Gates²,

Smith³

2014

Opt. Express

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This paper reports for the first time a planarised optical fiber composite formed using Flame Hydrolysis Deposition (FHD). As a way of format demonstration a Micro-Opto-Electro-Mechanical (MOEMS) hot wire anemometer is formed using micro-fabrication processing. The planarised device is rigidly secured to a silicon wafer using optical quality doped silica that has been deposited using flame hydrolysis and consolidated at high temperature. The resulting structure can withstand temperatures exceeding 580K and is sensitive enough to resolve free and forced convection interactions at low fluid velocity.

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“…It requires complicated processes and equipments. For low and medium power fiber lasers, other side-pumping methods are adopted, such as the conventional fiber angle-polished method [9], the prim-fiber coupler [10], the V-groove side coupling technique [11],the embedded lens method [12] Figure 1 (online color at www.lphys.org) Schematic drawing of the laser with fused angle-polished side-pumping configuration the embedded mirror method [13], the side grating coupler [14,15], and the etched silicon capillary side coupler [16]. It should be noted that the prim-fiber coupler, the V-groove side coupling technique, the embedded lens method and the embedded mirror method are not for allfiber configurations.…”

Section: Introductionmentioning

confidence: 99%

100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration

Xiao¹,

Yan²,

Shen³

et al. 2010

Laser Phys. Lett.

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Obtaining sufficient pump power is an engineering challenge in scaling fiber laser toward high power. A sidepumping all-fiber coupler with the coupling efficiency of 90.1% and the coupling power of 144.7 W was reported. The anglepolished pumping fiber was fused with the double-clad main fiber by carbon dioxide laser. The core of double-clad fiber was not interrupted. Based on this side-pumping coupler, a fiber laser with flexible configuration was demonstrated. The output power and the slope efficiency of fiber laser was 102.5 W and 77.1%, respectively. This side-pumping fiber coupler was beneficial to investigate efficient and reliable high power fiber lasers and amplifiers.

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High efficiency side-coupling of light into optical fibres using imbedded v-grooves

Cited by 119 publications

References 2 publications

Laser communication transmitter and receiver design

Laser communication transmitter and receiver design

Planarised optical fiber composite using flame hydrolysis deposition demonstrating an integrated FBG anemometer

100 W ytterbium-doped monolithic fiber laser with fused angle-polished side-pumping configuration

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