Broadband tunable semiconductor laser source

Details Broadband tunable semiconductor laser source Broadband tunable semiconductor laser source

1997-10-17

2000-08-22

Arroyo, Teresa M.

Coherent light generators

Particular active media

Semiconductor

372 96, H01S 500, H01S 308

Patent

active

061083623

ABSTRACT:
A tunable semiconductor laser comprises a gain section having an MQW active region, a uniform pitch grating DFB region, and first waveguide. A composite reflector, including a second MQW region and a second waveguide, forms a cavity resonator with the DFB region. A voltage applied to the composite reflector induces a quantum confined stark effect, thereby allowing the wavelength to be altered. In one embodiment, the current drive to the active region and the shape of the first waveguide (e.g., a raised-sine function) are mutually adapted so that N longitudinal modes have essentially the same threshold gain and so that the DFB region spanned by the first waveguide is segmented into N zones, each zone providing optical feedback at a different wavelength corresponding to a different longitudinal mode.

REFERENCES:
patent: 4961198 (1990-10-01), Ishino et al.
patent: 5119393 (1992-06-01), Oka et al.
patent: 5347528 (1994-09-01), Suzuki et al.
patent: 5606573 (1997-02-01), Tsang
T. Numai, 1.5-.mu.m Wavelength Tunable Phase-shift Controlled Distributed Feedback Laser, J. Lightwave Tech., vol. 10, No. 2, pp. 199-205 (Feb. 1992).
W.T. Tsang et al., Control of Lasing Wavelength in Distributed Feedback Lasers by Angling the Active Stripe with Respect to the Grating, IEEE Photonics Tech. Lett., vol. 5, No. 9, pp. 978-980 (Sep. 1993).
H. Nakajima et al., Absorption-controlled tunable DFB amplifier-filters, Electronic Lett., vol. 30, No. 16, pp. 1294-1296 (Aug. 1994).
H. Hillmer et al., Tailored DFB Laser Properties by Individually Chirped Gratings Using Bent Waveguides, IEEE J. Selected Topics in Quantum Electronics, vol. 1, No. 2, pp. 356-362 (Jun. 1995).
H. Nakajima et al., Very high speed wavelength switching capability Franz-Keldysh electroabsorption DFB lasers, OFC '96 Technical Digest, p. 276 (1996) (No Month Available).
L. E. Adams et al., System Performance of High-Speed Broadband-Tunable Laser for Wavelength Conversion in WDM Networks, OFC '97, Postdeadline Paper No. PD11, pp. 1-4 (Feb. 1997).
T. Tanbun-Ek et al., Tunable Electroabsorption Modulated Laser Integrated with a Bent Waveguide Distributed-Feedback Laser, IEEE Photonics Tech. Lett., vol. 9, No. 5, pp. 563-565(May 1997).

Affiliated with

Also associated with

Rating

Broadband tunable semiconductor laser source does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Broadband tunable semiconductor laser source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Broadband tunable semiconductor laser source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-589600