Optical waveguides – With optical coupler – Input/output coupler
Patent
1999-02-25
2000-10-24
Davie, James W.
Optical waveguides
With optical coupler
Input/output coupler
385 24, G02B 634
Patent
active
061379336
ABSTRACT:
A wavelength division multiplexer/demultiplexer is provided that integrates axial gradient refractive index elements with a diffraction grating to provide efficient coupling from a plurality of input optical sources (each delivering a single wavelength to the device) which are multiplexed to a single polychromatic beam for output to a single output optical source. The device comprises: (a) means for accepting an optical input from at least one optical source, the means including a planar surface; (b) a first coupler element comprising (1) a first axial gradient refractive index collimating lens having a planar entrance surface onto which the optical input is incident and (2) a first homogeneous index boot lens affixed to the first collimating lens and having a planar exit surface from which optical light exits; (c) a diffraction grating formed on the planar exit surface which combines a plurality of angularly separated diffracted wavelengths from the optical light; (d) a reflecting element for reflecting the plurality of diffracted wavelengths; (e) a second coupler element comprising (1) a second homogeneous index boot lens having a planar entrance surface onto which said plurality of diffracted wavelengths is incident and (2) a second axial gradient refractive index collimating lens affixed to the second homogeneous index boot lens; and (f) means for outputting at least one multiplexed, polychromatic output beam to an optical receiver, the means including a planar back surface. The device may be operated in either the forward or the reverse direction.
REFERENCES:
patent: 4111524 (1978-09-01), Tomlinson, III
patent: 4153330 (1979-05-01), Tomlinson, III
patent: 4198117 (1980-04-01), Kobayashi
patent: 4274706 (1981-06-01), Tangonan
patent: 4279464 (1981-07-01), Colombini
patent: 4299488 (1981-11-01), Tomlinson, III
patent: 4343532 (1982-08-01), Palmer
patent: 4387955 (1983-06-01), Ludman et al.
patent: 4479697 (1984-10-01), Kapany et al.
patent: 4522462 (1985-06-01), Large et al.
patent: 4583820 (1986-04-01), Flamand et al.
patent: 4622662 (1986-11-01), Laude et al.
patent: 4626069 (1986-12-01), Dammann et al.
patent: 4634215 (1987-01-01), Reule
patent: 4643519 (1987-02-01), Bussard et al.
patent: 4652080 (1987-03-01), Carter et al.
patent: 4671607 (1987-06-01), Laude
patent: 4703472 (1987-10-01), Blumentritt et al.
patent: 4708425 (1987-11-01), Gouali et al.
patent: 4726645 (1988-02-01), Yamashita et al.
patent: 4740951 (1988-04-01), Lizet et al.
patent: 4741588 (1988-05-01), Nicia et al.
patent: 4744618 (1988-05-01), Mahlein
patent: 4746186 (1988-05-01), Nicia
patent: 4748614 (1988-05-01), Dammann et al.
patent: 4749247 (1988-06-01), Large
patent: 4752108 (1988-06-01), Vollmer
patent: 4760569 (1988-07-01), Mahlein
patent: 4763969 (1988-08-01), Khoe et al.
patent: 4773063 (1988-09-01), Hunsperger et al.
patent: 4786133 (1988-11-01), Gidon et al.
patent: 4819224 (1989-04-01), Laude
patent: 4834485 (1989-05-01), Lee
patent: 4836634 (1989-06-01), Laude
patent: 4857726 (1989-08-01), Kinney et al.
patent: 4923271 (1990-05-01), Henry et al.
patent: 4926412 (1990-05-01), Jannson et al.
patent: 4930855 (1990-06-01), Clark et al.
patent: 4934784 (1990-06-01), Kapany et al.
patent: 5026131 (1991-06-01), Jannson et al.
patent: 5107359 (1992-04-01), Ohuchida
patent: 5170451 (1992-12-01), Ohshima
patent: 5228103 (1993-07-01), Chen et al.
patent: 5278687 (1994-01-01), Jannson et al.
patent: 5355237 (1994-10-01), Lang et al.
patent: 5363220 (1994-11-01), Kuwayama et al.
patent: 5440416 (1995-08-01), Cohen et al.
patent: 5442472 (1995-08-01), Skrobko
patent: 5450510 (1995-09-01), Boord et al.
patent: 5457573 (1995-10-01), Iida et al.
patent: 5500910 (1996-03-01), Boudreau et al.
patent: 5513289 (1996-04-01), Hosokawa et al.
patent: 5526155 (1996-06-01), Knox et al.
patent: 5541774 (1996-07-01), Blankenbecler
patent: 5555334 (1996-09-01), Ohnishi et al.
patent: 5583683 (1996-12-01), Scobey
patent: 5606434 (1997-02-01), Feldman et al.
patent: 5657406 (1997-08-01), Ball
patent: 5684899 (1997-11-01), Ota
patent: 5703722 (1997-12-01), Blankenbecler
patent: 5742416 (1998-04-01), Mizrahi
patent: 5745270 (1998-04-01), Koch
patent: 5745271 (1998-04-01), Ford et al.
patent: 5745612 (1998-04-01), Wang et al.
patent: 5748350 (1998-05-01), Pan et al.
patent: 5748815 (1998-05-01), Hamel et al.
patent: 5768450 (1998-06-01), Bhagavatula
patent: 5777763 (1998-07-01), Tomlinson, III
W.J. Tomlinson, "Wavelength multiplexing in multimode optical fibers", Applied Optics, vol. 16, No. 8, pp. 2180-2194 (Aug. 1977).
A.C. Livanos et al, "Chirped-grating demultiplexers in dielectric waveguides", Applied Physics Letters, vol. 30, No. 10, pp. 519-521 (May 15, 1977).
Hideki Ishio et al, "Review and status of wavelength-division multiplexing technology and its application", Journal of Lightwave Technology, vol. LT-2, No. 4, pp. 448-463 (Aug. 1984).
H. Obara et al, "Star coupler based WDM switch employing tunable devices with reduced tunability range", Electronics Letters, vol. 28 No. 13, pp. 268-270 (Jun. 18, 1992).
A.E. Willner et al, "2-D WDM optical interconnections using multiple-wavelength VCSEL's for simultaneous and reconfigurable communication among many planes,", IEEE Photonics Technology Letters, vol. 5, No. 7, pp. 838-841 (Jul. 1993).
Yang-Tung Huang et al, "Wavelength-division-multiplexing and -demeltiplexing by using a substrate-mode grating pair", Optics Letters, vol. 17, No. 22, pp. 1629-1631 (Nov. 15, 1992).
M.R. Wang et al, "Five-channel polymer waveguide wavelength division demultilexer for the near infrared", IEEE Photonics Technology Letters, vol. 3, No. 1, pp. 36-38 (Jan. 1991).
Maggie M. Li et al, "Two-channel surface-normal wavelength division demultiplexer using substrate guided waves in conjunction with multiplexed waveguide holograms", Appl. Phys. Lett. vol. 66, No. 3, pp. 262-264 (Jan. 16, 1995).
G. R. Harrison, Ph.D., Sc.D. et al., Practical Spectroscopy, Chapter 4--Diffraction-Grating Spectrographs, Prentice-Hall (1948) (No Month).
W. J. Tomlinson, Wavelength multiplexing in multimode optical fibers, Applied Optics, vol. 16, No. 8 (Aug. 1977).
W. J. Tomlinson et al., Optical multiplexer for multimode fiber transmission systems, Appl. Phys. Lett., vol. 31, No. 3 (Aug. 1977).
W. J. Tomlinson et al., Optical wavelength-division multiplexer for the 1-1.4 .mu.m spectral region, Electronics Letters, vol. 14, No. 11 (May 25, 1973).
T. Miki et al., Viabilities of the wavelength-division-multiplexing transmission system over an optical fiber cable, IEEE Transactions on Communications, vol. Com-26, No. 7 (Jul. 1978).
K. Aoyama et al., Optical demultiplexer for a wavelength division multiplexing system, Applied Optics, vol. 18, No. 8 (Apr. 15, 1979).
K. Aoyama et al., Low-loss optical demultiplexer for WDM systems in the 0.8-.mu.m wavelength region, Applied Optics, vol. 18, No. 16 (Aug. 15, 1979).
R. Watanabe et al., Optical Demultiplexer Using Concave Grating in 0.7-0.9 um Wavelength Region, Electronics Letters, vol. 16, No.3 (Jan. 31, 1980).
K. Kobayashi et al., Microoptic Grating Multiplexers and Optical Isolators for Fiber-Optic Communications, Journal of Quantum Electronics, vol. QE-16, No. 1 (Jan. 1980).
Yohji Fujii et al., Optical Demultiplexer Using a Silison Echelette Grating, Journal of Quantum Electronics, vol. QE-16, No. 2 (Feb. 1980).
W. J. Tomlinson, Applications of GRIN-rod lenses in optical fiber communication systems, Applied Optics, vol. 19, No. 7 (Apr. 1, 1980).
A. Nicia, Wavelength Multiplexing and Demultiplexing Systems for Singlemode and Multimode Fibers, Conference Proceedings, European Conference on Optical Communication (Sep. 8-11, 1981).
B. D. Metcalf et al., High-capacity wavelength demultiplexer with a large-diameter GRIN rod lens, Applied Optics, vol. 21, No. 5 (Mar. 1, 1982).
J. Lipson et al., Low-Loss Wavelength Division Multiplexing (WDM) Devices for Single-Mode Systems, Journal of Lightwave Technology, vol. LT-1, No. 2 (Jun. 1983).
G. Winzer, Wavelength Multiplexing Components--A Review of Single-Mode Devices and their Applications, Journal of Lightwave Technology, vol. L
Chen Ray T.
Dempewolf Joseph R.
Hunter Boyd V.
Wade Robert K.
Davie James W.
LightChip, Inc.
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