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法國Keopsys 
Keopsys公司創建于1997年，總部位于法國Lannion，為業內專業致力于高功率光放大器與光纖激光器的著名廠商。Keopsys公司的核心技術為VSP(Vgroove Side Pumping)V型槽側向泵浦技術，并同時擁有雙包層泵浦技術。公司擁有12項VSP技術專利，具有成本低、耦合效率高、設計簡單等諸多優點。
Keopsys公司產品包括C/L波段單信道/DWDM系列高功率EDFA、短脈沖EDFA放大器、高功率摻Yb放大器、短脈沖激光器、高功率Er/Yb/Raman光纖激光器等，Keopsys公司提供光模塊、帶電路驅動控制的光模塊式、19英寸機架式等不同類型產品，并可根據客戶具體技術要求進行訂制。

Keopsys公司技術

法國Keopsys公司生產的光纖放大器和激光器產品在電信、遠距離及現場傳感、科研、工業及軍事領域有著極其廣泛的應用。Keopsys在產生高平均功率和高峰值功率方面有其獨特的專長。產品使用綜合方法進行優化從而可以進行各種特殊的應用，優化方法綜合考慮了摻雜光纖的選用、泵浦方法、放大器結構及子器件、泵浦激光器的類型和波長、還有機電配置。為在峰值功率、光電轉換效率、尺寸及重量方面達到最優性能，Keopsys使用了多種專利技術。
Keopsys的核心技術之一是使用高功率高可靠性的激光管來泵浦雙包層增益光纖(double cladding gain fibers (DCGF))。盡管Keopsys應用了數種注入泵浦光到DCGF中的方式，但最通用的技術還是V型槽側向泵浦 (v groove side pumping (VSP))技術。
Keopsys is headquartered in Lannion France, with an advanced R/D laboratory in Fairfax, Virginia and a sales office in Pittstown, New-Jersey.

Initially founded in 1997 by Marc Le Flohic, under the name of OptoCom Innovation, the company underwent significant expansion and was re-funded under a new name of Keopsys by Marc Le Flohic, Jean Marc Delavaux and Lew Goldberg. Keopsys investors include Sofinov, Thalès Ventures, Natexis Ventech and Bretagne Participation, and Quan Ventures, with a combined investment of 14 million euros.

Keopsys has attracted a team with a demonstrated record of technical expertise and innovation, with approximately 40% of its workforce holding advanced degrees. The company maintains successful technical collaborations with research laboratories, universities and companies around the world.

Keopsys manufactures a large range of standard and custom-designed optical fiber amplifiers and lasers for fiber and free space optical communication systems, CATV, component testing, remote sensing, spectroscopy, material processing, military and research applications. High output powers are achieved through the use of double cladding fibers pumped by broad stripe diodes. A variety of pumping techniques are utilized, each optimised for a specific application.

In addition to conventional multimode fiber couplers, many Keopsys products also use a proprietary v-groove side-pumping (VSP?) to efficiently inject the pump light directly into double cladding fibers. This approach offers higher conversion efficiency, smaller size, simpler assembly, and shorter signal path than possible with other pumping methods.