Keis遊雅堂 キャッシュ Takaki, Tomofumi Kise, Kazuomi Maruyama, Koji 遊雅堂 キャッシュraiwa, Nobumitsu Yamanaka, Masaki Funabas遊雅堂 キャッシュ and Aki遊雅堂 キャッシュko Kasukawa
Abstract
CW-DFB Lasers can be used for WDM and CATV applications by combining them with external modulators. For WDM application, we successfully obtained a low driving current of less than 200 mA at 40 mW from S-band to L-band by taking care of the optical confinement of the MQW structure. On the other hand, by optimizating cavity length and coupling coefficient, we achieved a 遊雅堂 キャッシュ output power of 175 mW and a narrow linewidth of 0.8 MHz even at 100 mW for CATV applications.
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