IEEE Photonics Society Los Angeles Chapter



The goal of the Los Angeles Chapter of IEEE Photonics Society is to advance the interests of its members and the photonics community by providing opportunities for information exchange, continuing education on timely topics, sponsoring special events, and supporting student activities. The Chapter implements outreach activities aimed at communicating the important role of photonics in modern communication and medicine to the general public.


Upcoming Seminars





Photonics Seminar
Location: Room 57-124, Engineering IV
Date & Time: Tuesday, March 27, 2012, 11:00 am - 12:00 pm

Broadband Chromium-Doped Fiber Amplifiers for Next-Generation Optical Communication Systems

Wood-Hi Cheng

National Sun Yat-Sen University, Taiwan


Abstract:We report the first experimental breakthrough of a net gain of optical signals in a broadband chromium-doped fiber amplifier (CDFA) for nextgeneration optical communication systems. Current fiber amplifiers, including commercial erbium-doped fiber amplifier, cover only a relatively small portion of the entire transmission bandwidths (1300-1600 nm) of the low-loss windows of silica fibers. The newly developed CDFAs have opened up the possibility of utilizing the 300-nm entire spectrum of the low-loss fibers to further increase the transmission capacity. In this paper, we present the experimental demonstration of a net gain of 1.2 dB employing gain enhancement technique. With the help of an optical-fiber system examination for the CDFA, a 40-Gb/s error-floor free data transmission was successfully demonstrated by realizing the high-speed transmission of signal with gain through the chromium-doped fiber (CDFs). Further gain improvement in the CDFAs employing few-mode or single-mode CDFs will be presented and discussed.

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