The temporal and spectroscopic characteristics of multi-order SRS pulses, pumping pulse, and their temporal separation in quartz quasi-monomode optical fiber are reported for ps pumping pulses. High conversion efficiency (over 80%) of SRS is found experimentally at high pumping power,and the place for SRS generation is close to the input end of the optical fiber (1.5m). Almost continuous orders of SRS spectrum have been observed for a 63m long optical fiber.