Highly reliable and low-cost plastic modules of spot size converter integrated laser diodes for access network systems

AbstractHybrid Integration of passive and opto-electronic devices is emerging as a key technology of optical component, because it can increase functionality and reliability of optical device module, lowers the packaging cost and enables automated manufacturing. Main applications of hybrid integrated microphotonic devices are FTTH system and metro access network.There are various technical issues in hybrid integration modules. It requires connecting an active device to a passive waveguide. The embedded functional devices such as grating, coupler, switch and filter are essential elements to improve optical performance of integrated devices. The package solution for low cost and small size is also required.We have developed SSC LD(Spot Size Converted Laser Diode) and RMF PD(Reflection Mirror Facet Photo Diode) for connecting to planar waveguide. Simple and cost-effective silica PLC platform with terraced-silica, PLC grating and coupler have been developed. Using these technologies, we have made bi-directional diplexer, triplexer and ECL(External Cavity Laser).

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ULTRA-COMPACT SPECTRAL SLICER DEVICES BASED ON MICRORING RESONATORS

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863505002700 ◽

2005 ◽

Vol 14 (02) ◽

pp. 273-279

Author(s):

FREDDY SUSANTO TAN ◽

HENRY KELDERMAN ◽

ALFRED DRIESSEN

Keyword(s):

Wavelength Division Multiplexing ◽

Low Cost ◽

Laser Diodes ◽

Access Network ◽

Microring Resonators ◽

Wavelength Division ◽

Rejection Ratio ◽

Broadband Light Source ◽

The Individual ◽

Additional Channel

In Wavelength Division Multiplexing (WDM), access network spectral slicer devices in connection with a broadband light source are attracting low-cost alternatives for the laser diodes that are required for transmission in the desired wavelength channels. The proposed ultra-compact spectral slicer devices consist of microring resonators with slightly different radius and consequently slightly different resonant wavelength. Single and cascaded multiple microring devices have been fabricated and characterized to demonstrate the desired functionality. Cascaded devices show better performance in term of lower crosstalk, higher rejection ratio and faster roll-off. Moreover, they open the possibility to improve the spectral efficiency of the individual channels without introducing additional channel crosstalk.

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Laser diodes with integrated spot-size transformer as low-cost optical transmitter elements for telecommunications

IEEE Journal of Selected Topics in Quantum Electronics ◽

10.1109/2944.658791 ◽

1997 ◽

Vol 3 (6) ◽

pp. 1372-1383 ◽

Cited By ~ 13

Author(s):

B. Hubner ◽

G. Vollrath ◽

R. Ries ◽

C. Greus ◽

H. Janning ◽

...

Keyword(s):

Low Cost ◽

Laser Diodes ◽

Spot Size ◽

Optical Transmitter

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1.3-μm spot-size converter integrated laser diodes (SS-LDs) for access network applications

Conference Proceedings. LEOS '97. 10th Annual Meeting IEEE Lasers and Electro-Optics Society 1997 Annual Meeting ◽

10.1109/leos.1997.630620 ◽

2002 ◽

Cited By ~ 1

Author(s):

Y. Tohmori ◽

Y. Itaya ◽

H. Toba

Keyword(s):

Laser Diodes ◽

Access Network ◽

Spot Size ◽

Network Applications

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Highly Reliable Operation of InGaAlAs MESA-Waveguide Photodiodes in Humid Ambient

MRS Proceedings ◽

10.1557/proc-531-317 ◽

1998 ◽

Vol 531 ◽

Cited By ~ 2

Author(s):

Hitoshi Nakamura

Keyword(s):

Dark Current ◽

High Reliability ◽

Low Cost ◽

Access Network ◽

Stable Operation ◽

Network Systems ◽

Polymer Encapsulation ◽

Humid Condition ◽

Surface Integration ◽

C 50

AbstractReliability of lnGaAlAs mesa-waveguide photodiodes suitable for low-cost surface integration modules applied to access network systems is investigated. A passivation technique including silicone-based polymer encapsulation was used to ensure high reliability. Under a non-humidity condition of 200°C/10 V, a 9,600-hour stable operation was observed, and the estimated median lifetime is more than 100 years at the field service temperature of 85°C. A measured slight change in the dark current is explained in terms of hole accumulation at the semiconductor-insulator interface. Under a humid condition of 85°C/85% RH/10 V, there was no change in the dark current over 10,000 hours. The observed median lifetime at 135°C/85% RH/10 V of 1,500 hours would lead to an estimated median lifetime at 45°C/50% RH of about 50 years. These results suggest that the WG-PD is applicable to low-cost non-hermetic optical modules for optical access networks.

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