Yonsei Univ. High-Speed Information Transmission Lab. Lect. 1-9-(1) Diffraction Grating (Mon.) ● Diffraction Grating d a a d ● ● ●● ● ●● ● ●● ● ● a d * ● ● ●● ● ●● ● ●● ● ● ● ● ●● ● ●● ● ●● ● ● × Fourier Transform ◆ Grating Equation or Bragg diffraction condition ( 단, m 은 정수이고, diffraction 의 order 를 의미한다.)

Yonsei Univ. High-Speed Information Transmission Lab. Lect. 1-9-(2) Diffraction Grating (Mon.) ● Diffraction Grating (Continued…)

Yonsei Univ. High-Speed Information Transmission Lab. Lect. 1-9-(3) Diffraction Grating (Mon.) d a ● Diffraction Grating (Continued…) 입사각의 변화로 인한 추가 phase shift 발생 추가 phase shift ◆ Application ● OSA (Optical Spectrum Analyzer) ● WDM (Wavelength Division Multiplexing) HW) 4 월 11 일 ( 금 ) 연습수업 시간 전까지 2001 년 광전자 TEST#2 Prob. 4 ( 단, waveguide 무시하고 풀 것 ) Effective index : n eff