Nm trong edfa cho hi u su t ệ ấ công su t cao

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nm trong EDFA (cho hi u su t công su t cao) 52.S d ng b c sóng b m ướ ơ λ = 980 nm trong EDFA (cho công su t khu ch đ i cao) ế T 53.Tham s quan tr ng nh t c a máy thu quang là (m c công su t thu đ u vào) 54.Tín hi u trên đ ng truy n quang là (dãy xung laser đ c đi u ch ) ườ ượ ế 55.Tín hi u trong s i quang ko b nh h ng c a đi n t tr ng ngoài ị ả ưở ườ là do (tín hi u quang là ánh sáng) 56.Tính toán qu công su t c a h th ng đ tìm (chi u dài m t kho ng l p v i t n s đã ch n) 57.Trong h th ng thông tin quang Coheren (tín hi u quang đ c ch n ươ v i tín hi u dao đ ng n i tr c khi đ n tách sóng) ướ ế 58.Trong s i quang đa mode (phân b ánh sáng bình đ ng v i các mode truy n) 59.Trong thông tin quang Coheren , laser dao đ ng n i (có c u t o gi ng nh laser ph n phát nh ng t n s có th đi u ch nh đ c) ư ư ượ 60.Truy n d n quang trong s i quang có đ c đi m nh ư sau (D a vào hi n t ng ph n x toàn ph n v i góc c a tia t i l n h n góc t i ượ ơ h n) V
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61.V i m t ng d n sóng có kích th c xác đ nh (có th có nhi u mode ộ ố ướ d n sóng) Y 62. Y u t chính ph i gi i quy t khi thi t k h th ng thông tin là (l a ế ế ế ế ch n c u hình c a tuy n) ế
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