Reflection loss of laser mode from tilted end mirror

The reflection of the lowest-order guided TE mode of a slab waveguide from a tilted end mirror is discussed. The problem is applicable to injection lasers if the slab is regarded as an effective refractive index approximation of the channel or ridge waveguide of the laser structure. For a mode width of 3 mu m, 5 degrees mirror tilt results in reflection losses in excess of 25 dB; for modes of 6- mu m width, 5 degrees mirror tilt causes reflection losses in excess of 45 dB. For small tilt angles the results of this calculation agree with those based on a Gaussian approximation of the guided mode. For larger angles, and hence higher reflection losses, the results depart significantly from the Gaussian approximation. >

[1]  N. A. Olsson,et al.  Reflection noise in index-guided InGaAsP lasers , 1986 .

[2]  D. Marcuse.  Loss analysis of single-mode fiber splices , 1977, The Bell System Technical Journal.

[3]  Robert W. Tkach,et al.  Effect of Rayleigh backscattering from optical fibers on DFB laser wavelength , 1986 .

[4]  G. Eisenstein.  Theoretical design of single-layer antireflection coatings on laser facets , 1984, AT&T Bell Laboratories Technical Journal.

[5]  M. Saruwatari,et al.  Distributed feedback laser diode (DFB-LD) to single-mode fiber coupling module with optical isolator for high bit rate modulation , 1986 .

[6]  Robert D. Burnham,et al.  GaAs/GaAlAs diode lasers with angled pumping stripes , 1978 .

[7]  A. Chraplyvy,et al.  Regimes of feedback effects in 1.5-µm distributed feedback lasers , 1986 .

[8]  Dietrich Marcuse,et al.  Tilt, offset, and end-separation loss of lowest-order slab waveguide mode , 1986 .

[9]  Waveguide laser resonators with a tilted mirror , 1986 .

[10]  Kohroh Kobayashi,et al.  Microoptic grating multiplexers and optical isolators for fiber-optic communications , 1980 .

[11]  S Matsumoto,et al.  Temperature-stable Faraday rotator material and its use in high-performance optical isolators. , 1986, Applied optics.

[12]  M. Saruwatari,et al.  An effective nonreciprocal circuit for semiconductor laser-to-optical-fiber coupling using a YIG sphere , 1983, Journal of Lightwave Technology.

[13]  Takaaki Mukai,et al.  Chapter 3 Optical Amplification by Semiconductor Lasers , 1985 .

[14]  H. Karstensen,et al.  Laser Diode to Single-Mode Fiber Coupling with Ball Lenses , 1988 .

[15]  Niloy K. Dutta,et al.  Effect of fiber‐far‐end reflections on intensity and phase noise in InGaAsP semiconductor lasers , 1984 .

[16]  Niloy K. Dutta,et al.  Bit-error-rate saturation due to mode-partition noise induced by optical feedback in 1.5-µm single longitudinal-mode C 3 and DFB semiconductor lasers , 1985 .