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Furukawa Review No.23

Development of High-Power Stable PLC-Type Pump Combiner

Koji Seo, Mitsuhiro Iwaya, Masato Shiino and Kanji Tanaka


A PLC-type pump combiner has been developed, which is capable of multiplexing for 15 wavelength channels between 1410 and 1510 nm, thereby making it applicable to Raman amplifiers and high-power optical amplifiers for dense wavelength division multiplexing (DWDM) systems. Our device has a narrow spectral pass-band spacing of 1 THz, and a total insertion loss below 2.0 dB. Both input and output connections between PLC and fibers are physical contact (PC) with a mechanically transferable (MT) connector-like structure and are adhesive free in the optical path, so they show good stability for a high input power more than 1.2 W.

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Bound to Innovate

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