In order to overcome these transmission impairments, several key enabling technologies such as GVD compensation, PMD compensation, distributed Raman amplification (DRA), forward error correction (FEC) and suitable modulation format, should be employed.
为了克服这些传输损伤，必须解决若干关键技术：色散补偿、偏振模色散补偿、拉曼放大、纠错编码和调制格式等。
参考来源 - 高速光通信中若干关键技术的研究Modulation format is one of the most important characteristics used to distinguish communication signals.
调制方式是区分不同性质通信信号的一个重要特征。
参考来源 - 数字通信信号调制识别若干新问题研究In two-stage long-reach PON, we demonstrate the all-optical VPN faction, for the first time in the world, by using dynamic wavelength reflector. Orthogonal FSK/ASK modulation format is used to improve the scalability of the network.
在两级长距离无源光网中,使用动态波长发射器,第一次实现了全光虚拟专用网功能,并提出了采用FSK/ASK正交调制码型的方案,大大改进了网络的扩展性。
参考来源 - 无源光网中的全光虚拟专用网及新型业务传送技术研究As one of the key technologies for high speed optical communication system, novel modulation format has been attracting attention.
新型码型调制技术作为高速光纤通信系统的关键技术之一,受到广泛的关注。
参考来源 - 光调制技术及其在光标记交换网络和ROF系统中的应用·2,447,543篇论文数据，部分数据来源于NoteExpress
Modulation format of signal has become a key technique to enhance the transmission capability of system in the long-distance system.
在超长距离传输时，信号调制格式是可提高系统传输性能的一项关键技术。
Semiconductor optical amplifier (SOA) is very fit for all optical modulation format conversion due to its high nonlinear characteristics, lower switch power and small size.
半导体光放大器(SOA)由于具有高非线性特性、低开关功率和尺寸较小等优点，非常适合用来实现全光码型转换。
The audio data should be in a format understood by the headset (for example, A-law PCM [Pulse Code Modulation] format for the Sony headset).
音频数据应当是耳机可以理解的格式(例如，Sony耳机的a - law P CM [Pulse Code modulation]格式)。
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