Lens Alignment Technique Using High-Power Laser for Hybrid Integrated Multi-Channel Transmitter Optical Sub-Assemblies

Murao, Tadashi; Yasui, Nobuyuki; Mochizuki, Kimihiro; Shimono, Masaya; Kodera, Hiroya; Morita, Daisuke; Yamatoya, Takeshi; Aruga, Hiroshi

doi:10.1109/lpt.2013.2278184

Cited by 20 publications

(15 citation statements)

References 5 publications

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“…The irradiations are carried out until the lens is controlled to be within the target range. These results indicate that the precise lens-alignment technique is fully established [14], [16].…”

Section: Precise Lens-alignment Techniquementioning

confidence: 56%

“…Third, an electrical transmission path with good performance for high speed signals is needed. The technologies used in this model to resolve these issues are described below [14], [16]- [18].…”

Section: Structures Of Tosa and Rosamentioning

confidence: 99%

“…While there is an advantage of simplified assembly, this structure involves the difficulty of chip fabrication. For the latter, hybrid, type, an OSA constructed by integrating a planar lightwave circuit (PLC) [11]- [14] or builtin spatial optics with four LDs has been developed [15]- [17]. For these structures, the optics tend to be complex, reducing the manufacturing yield due to unwanted misalignment of the assembly, so a precise alignment technique is essential.…”

mentioning

confidence: 99%

“…In this paper, we report a compact integrated four-lane 25 Gb/s TOSA (15.1 mm × 6.5 mm × 5.6 mm) and ROSA (17.0 mm × 12.0 mm × 7.0 mm) [17] with built-in Spatial Mux/Demux optics, using three key techniques, a precise lens-alignment technique [14], [16], low-loss built-in Spatial Mux/Demux optics [17] and a matched electrical connection for the high-frequency signals [18]. We demonstrate electrical-optical performance which fully meets the 100GbE specification.…”

mentioning

confidence: 99%

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Assembly Technologies for Integrated Transmitter/Receiver Optical Sub-Assembly Modules

Mochizuki

Murao

Shirao

et al. 2017

IEICE Trans. Electron.

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SUMMARYWe have succeeded in developing three techniques, a precise lens-alignment technique, low-loss built-in Spatial Multiplexing optics and a well-matched electrical connection for high-frequency signals, which are indispensable for realizing compact high-performance TOSAs and ROSAs employing hybrid integration technology. The lens position was controlled to within ±0.3 μm by high-power laser irradiation. All components comprising the multiplexing optics are bonded to a prism, enabling the insertion loss to be held down to 0.8 dB due to the dimensional accuracy of the prism. The addition of an FPC layer reduced the impedance mismatch at the junction between the FPC and PCB. We demonstrated a compact integrated four-lane 25 Gb/s TOSA (15.1 mm × 6.5 mm × 5.6 mm) and ROSA (17.0 mm × 12.0 mm × 7.0 mm) using the built-in spatial Mux/Demux optics with good transmission performance for 100 Gb/s Ethernet. These are respectively suitable for the QSFP28 and CFP2 form factors.

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Section: Precise Lens-alignment Techniquementioning

confidence: 56%

Section: Structures Of Tosa and Rosamentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Assembly Technologies for Integrated Transmitter/Receiver Optical Sub-Assembly Modules

Mochizuki

Murao

Shirao

et al. 2017

IEICE Trans. Electron.

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“…Lasers used in the instruments operate mainly in the infrared spectrum in continuous or pulsed mode. Devices alignment with laser channels significantly differs from the well-developed techniques of optical devices alignment [4], [5].…”

Section: Introductionmentioning

confidence: 94%

Application of CCDs Matrix for Alignment of Optoelectronic Devices With Lasers

Lashmanov

Nuzhin

2015

IEEE Photon. Technol. Lett.

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The paper describes the original collimator system with matrix CCDs, allowing to implement the alignment of optoelectronic devices with lasers for a relatively low labor cost. Matching the laser transmitter axis with the collimation axis of rangefinder is shown on the example of a pulsed laser rangefinder. System helps to solve the problem of high-precision (with an accuracy of up to 5 ... 10 arc seconds) alignment of collimation axes of different receiving channels of optoelectronic device and transmitting laser channel.Index Terms-low-cost alignment, collimation, optoelectronic devices with lasers, rangefinder, off-axis parabolic metal mirror, laser visualization .

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Compact behavioral model and parametric extraction for optical phase shifters in carrier-depletion Mach–Zehnder silicon modulators

Murao

Ushida

Takahashi

et al. 2022

Optics Communications

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Lens Alignment Technique Using High-Power Laser for Hybrid Integrated Multi-Channel Transmitter Optical Sub-Assemblies

Cited by 20 publications

References 5 publications

Assembly Technologies for Integrated Transmitter/Receiver Optical Sub-Assembly Modules

Assembly Technologies for Integrated Transmitter/Receiver Optical Sub-Assembly Modules

Application of CCDs Matrix for Alignment of Optoelectronic Devices With Lasers

Compact behavioral model and parametric extraction for optical phase shifters in carrier-depletion Mach–Zehnder silicon modulators

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